What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Lisbon round-trip?

Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Lisbon round-trip from $636. Other airlines that can offer you cheap pricing are Royal Air Maroc, from $662, and Aer Lingus, from $683. Porter Airlines is currently priced 29% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Lisbon one-way?

The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $388. However, be on the lookout for offers from Scandinavian Airlines and Royal Air Maroc, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Lisbon for a low price.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Lisbon?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Lisbon flight should consider departing on Wednesday at noon when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Lisbon?

The cheapest flight price from Washington, D.C. Dulles Intl Airport to Lisbon is $251. On average you can expect to pay $1,693. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $554.

What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Lisbon?

The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Lisbon are JetBlue (79%), TAP AIR PORTUGAL (77%) and Air Canada (73%).

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Lisbon?

When booking a flight from Washington, D.C. Dulles Intl Airport to Lisbon, you may want to consider flying on American Airlines, Air France or Royal Air Maroc as they are the most popular for this route.

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Lisbon?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 20% when planning your travel around this day of the week.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Lisbon?

February is one of the best times of the year to fly to Lisbon from Washington, D.C. Dulles Intl Airport. Prices for February average $913 per person but you can even find prices for as low as $349. The most expensive prices can be found in the month of December. Opting for a February flight can save you 41% on your journey compared to booking in December

Most accurate provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Lisbon flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Lisbon flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Lisbon flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Lisbon flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Lisbon from Washington, D.C. Dulles Intl?

Most people fly into Lisbon Humberto Delgado (LIS) if they book a flight to Lisbon from Washington, D.C. Dulles Intl. On average, Humberto Delgado has 4 inbound flights from Washington, D.C. Dulles Intl per day from 13 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.

Can I find deals for flights from Dulles Intl to Lisbon that include hotel bookings?

Yes. In addition to deals on Dulles Intl to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dulles Intl to Lisbon?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Lisbon.

Can I find deals for business class flights from Dulles Intl to Lisbon?

Yes. Cheapflights offers flight deals from Dulles Intl to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$368+ Flights from Washington, D.C. Dulles Intl Airport to Lisbon

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Dulles Intl to Lisbon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado are usually found in February or November, booked 26 days in advance, depart on a Tuesday or Monday and return on a Friday

Cheap flight deals from Dulles Intl to Lisbon

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$636 (Mytrip)
One-way from	$368 (Mytrip)
Popular in	June
Cheapest in	February
Average price	$881
Good round-trip deal	$624 or less
Good one-way deal	$368 or less

Provider with most accurate pricing for Washington, D.C. Dulles Intl-Lisbon Humberto Delgado flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Lisbon Humberto Delgado flights.

Search Deals

From Washington, D.C. Dulles Intl to Lisbon Humberto Delgado

Search Deals

One-way flight from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($204 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado.

Search Deals

Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado.

Search Deals

Find flight deals from Dulles Intl to Lisbon

Cheapest flights from Dulles Intl to Lisbon
Explore the most affordable flight options available from Dulles Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Sun 11/28:30 pmIAD - LIS

1 stop14h 35mScandinavian Airlines

Mon 11/104:55 pmLIS - IAD

1 stop29h 20mScandinavian Airlines

Deal found 4/10

$525

Sun 11/98:40 pmIAD - LIS

1 stop9h 55mRoyal Air Maroc

Wed 11/1212:35 pmLIS - IAD

1 stop11h 05mRoyal Air Maroc

Deal found 4/10

$565

Sun 11/98:30 pmIAD - LIS

1 stop14h 35mMultiple Airlines

Tue 11/186:10 pmLIS - IAD

2 stops28h 05mMultiple Airlines

Deal found 4/10

$592

Tue 6/104:20 pmIAD - LIS

2 stops33h 10mPorter Airlines

Tue 6/178:15 amLIS - IAD

2 stops35h 51mPorter Airlines

Deal found 4/10

$636

Mon 9/151:30 pmIAD - LIS

1 stop20h 45mTurkish Airlines

Tue 9/304:45 pmLIS - IAD

1 stop24h 00mTurkish Airlines

Deal found 4/10

$679

Tue 6/109:00 pmIAD - LIS

1 stop19h 35mAer Lingus

Wed 6/1810:15 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 4/10

$683

Sat 8/211:15 pmIAD - LIS

1 stop17h 05mIcelandair

Sun 8/2410:20 pmLIS - IAD

1 stop28h 50mIcelandair

Deal found 4/9

$716

Wed 10/85:50 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Wed 10/1512:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 4/10

$776

Best flights from Dulles Intl to Lisbon
Discover carefully curated flight deals from Dulles Intl to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 11, 2025.

Tue 6/104:20 pmIAD - LIS

2 stops33h 10mPorter Airlines

Tue 6/178:15 amLIS - IAD

2 stops35h 51mPorter Airlines

Deal found 4/10

$636

Mon 5/510:20 pmIAD - LIS

Nonstop7h 20mMultiple Airlines

Wed 5/145:55 amLIS - IAD

2 stops39h 41mMultiple Airlines

Deal found 4/10

$643

Wed 5/79:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Mon 5/1212:00 pmLIS - IAD

1 stop12h 05mRoyal Air Maroc

Deal found 4/10

$662

Tue 6/109:00 pmIAD - LIS

1 stop19h 35mAer Lingus

Wed 6/1810:15 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 4/10

$683

Sun 5/49:40 pmIAD - LIS

1 stop31h 15mTurkish Airlines

Tue 5/2010:55 amLIS - IAD

1 stop29h 50mTurkish Airlines

Deal found 4/10

$729

Wed 6/113:30 pmIAD - LIS

1 stop14h 35mAir Canada

Wed 6/1812:50 pmLIS - IAD

1 stop13h 37mAir Canada

Deal found 4/9

$794

Sun 5/412:11 pmIAD - LIS

2 stops27h 29mScandinavian Airlines

Wed 5/147:15 amLIS - IAD

1 stop17h 44mScandinavian Airlines

Deal found 4/10

$814

Tue 7/110:40 pmIAD - LIS

1 stop19h 20mBritish Airways

Fri 8/227:20 amLIS - IAD

1 stop15h 10mBritish Airways

Deal found 4/10

$817

Wed 5/710:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Wed 5/1412:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 4/10

$819

Last-minute flights from Dulles Intl to Lisbon
Discover last-minute flight deals from Dulles Intl to Lisbon. Data last updated April 11, 2025 and is based on user searches.

Wed 4/1610:40 pmIAD - LIS

1 stop14h 15mBritish Airways

Sun 4/2711:00 amLIS - IAD

1 stop14h 15mBritish Airways

Deal found 4/9

$3,124

Thu 4/1710:15 pmIAD - LIS

Nonstop7h 15mUnited Airlines

Tue 4/2212:20 pmLIS - IAD

Nonstop8h 25mUnited Airlines

Deal found 4/10

$1,997

Thu 4/1711:05 pmIAD - LIS

1 stop17h 45mLufthansa

Mon 4/2112:20 pmLIS - IAD

Nonstop8h 25mLufthansa

Deal found 4/10

$2,051

Thu 4/171:44 pmIAD - LIS

2 stops13h 16mAir France

Mon 4/216:50 pmLIS - IAD

2 stops26h 49mAir France

Deal found 4/9

$2,079

Fri 4/1810:05 pmIAD - LIS

1 stop29h 55mMultiple Airlines

Fri 5/212:45 pmLIS - IAD

2 stops36h 14mMultiple Airlines

Deal found 4/11

$810

Fri 4/1810:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Fri 5/212:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 4/10

$1,051

Fri 4/189:05 pmIAD - LIS

1 stop15h 35mRoyal Air Maroc

Thu 4/249:55 pmLIS - IAD

1 stop26h 10mRoyal Air Maroc

Deal found 4/10

$1,148

Fri 4/188:25 pmIAD - LIS

1 stop32h 50mAer Lingus

Wed 4/2310:15 pmLIS - IAD

1 stop22h 35mAer Lingus

Deal found 4/10

$1,356

Fri 4/1812:40 pmIAD - LIS

2 stops15h 40mAir Canada

Thu 4/2411:25 amLIS - IAD

2 stops14h 50mAir Canada

Deal found 4/11

$2,004

Sat 4/1910:05 pmIAD - LIS

1 stop29h 55mScandinavian Airlines

Sat 4/267:15 amLIS - IAD

1 stop17h 44mScandinavian Airlines

Deal found 4/10

$1,265

Sun 4/208:30 pmIAD - LIS

2 stops15h 00mIcelandair

Sat 4/264:05 pmLIS - IAD

2 stops32h 15mIcelandair

Deal found 4/10

$1,832

Sun 4/205:25 pmIAD - LIS

2 stops23h 25mAustrian Airlines

Sat 4/265:05 amLIS - IAD

2 stops38h 30mAustrian Airlines

Deal found 4/10

$2,073

One-way flights from Dulles Intl to Lisbon
Search for one-way flight options from Dulles Intl to Lisbon. Find affordable one-way fares based on user searches. Data last updated April 11, 2025.

Tue 6/38:18 amIAD - LIS

2 stops16h 37mMultiple Airlines

Deal found 4/10

$368

Mon 5/510:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Deal found 4/10

$388

Mon 5/1910:05 pmIAD - LIS

1 stop17h 35mScandinavian Airlines

Deal found 4/10

$408

Sun 5/119:05 pmIAD - LIS

1 stop15h 35mRoyal Air Maroc

Deal found 4/10

$434

Sat 5/1010:35 pmIAD - LIS

Nonstop7h 20mJetBlue

Deal found 4/10

$547

Mon 7/710:40 pmIAD - LIS

1 stop14h 15mBritish Airways

Deal found 4/10

$595

Mon 7/79:03 amIAD - LIS

2 stops19h 02mAmerican Airlines

Deal found 4/10

$607

Mon 6/3010:40 pmIAD - LIS

2 stops19h 45mIberia

Deal found 4/10

$618

Sat 5/108:25 pmIAD - LIS

1 stop20h 10mAer Lingus

Deal found 4/10

$649

Wed 4/231:30 pmIAD - LIS

1 stop20h 55mTurkish Airlines

Deal found 4/10

$706

Tue 7/110:15 pmIAD - LIS

Nonstop7h 15mLufthansa

Deal found 4/10

$764

Mon 6/3010:15 pmIAD - LIS

Nonstop7h 15mUnited Airlines

Deal found 4/10

$768

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 10/1

9:05 pm-9:05 pm

1 stop19h 00m

Lisbon Humberto Delgado

Tue 10/7

6:40 pm-7:05 pm

1 stop29h 25m

$598

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 9/3

10:05 pm-10:10 pm

2 stops19h 05m

Lisbon Humberto Delgado

Wed 9/17

8:00 am-7:59 pm

2 stops16h 59m

$626

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 6/10

4:20 pm-6:30 am

2 stops33h 10m

Lisbon Humberto Delgado

Tue 6/17

8:15 am-3:06 pm

2 stops35h 51m

$636

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 8/26

10:05 pm-9:05 am

1 stop30h 00m

Lisbon Humberto Delgado

Wed 10/8

7:15 am-7:59 pm

1 stop17h 44m

$655

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 9/15

1:30 pm-3:15 pm

1 stop20h 45m

Lisbon Humberto Delgado

Tue 9/30

4:45 pm-11:45 am

1 stop24h 00m

$679

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 6/10

9:00 pm-9:35 pm

1 stop19h 35m

Lisbon Humberto Delgado

Wed 6/18

10:15 pm-6:55 pm

1 stop25h 40m

$683

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sat 8/2

11:15 pm-9:20 pm

1 stop17h 05m

Lisbon Humberto Delgado

Sun 8/24

10:20 pm-10:10 pm

1 stop28h 50m

$716

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 10/8

5:50 pm-6:10 am

Nonstop7h 20m

Lisbon Humberto Delgado

Wed 10/15

12:00 pm-3:20 pm

Nonstop8h 20m

$776

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 6/11

3:30 pm-11:05 am

1 stop14h 35m

Lisbon Humberto Delgado

Wed 6/18

12:50 pm-9:27 pm

1 stop13h 37m

$794

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 10/7

10:45 pm-11:00 pm

1 stop19h 15m

Lisbon Humberto Delgado

Tue 10/21

6:35 am-7:35 pm

2 stops18h 00m

$805

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 22 results

Compare providers for flights from Dulles Intl to Lisbon

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Lisbon in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightsMojo	Price Accuracy-	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Lisbon flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Lisbon flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Lisbon flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Lisbon flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Washington, D.C. Dulles Intl Airport to Lisbon flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Lisbon trip

Airports

IAD

For evening departures, expect crowded check-in areas at IAD. Arrive early to navigate the busy terminals smoothly.

LIS

Upon arrival at LIS, use the metro line for a quick 20-minute ride to downtown Lisbon from Terminal 1.

Our travel experts

Ramsey Qubein

Expert on LIS and IAD

Best time to book a flight from Dulles Intl to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Dulles Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Lisbon

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 26 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of $612). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of $1,203). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to LIS?

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Lisbon at noon. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the evening.

Rainfall in Lisbon by month

In terms of precipitation, rainfall in Lisbon ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

If weather is an important factor for your trip to Lisbon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Lisbon

To help decide which airline to fly from Washington, D.C. to Lisbon, see what other customers have to say about Porter Airlines, United Airlines and JetBlue. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

280 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

Porter Airlines

8.0

Very good

280 reviews

Porter Airlines

8.0

Very good

280 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Dec 2024

YYZ - LAS

United Airlines

7.4

Good

8,636 reviews

Porter Airlines

8.0

Very good

280 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Dec 2024

YYZ - LAS

JetBlue

7.3

Good

2,925 reviews

Porter Airlines

8.0

Very good

280 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Dec 2024

YYZ - LAS

Turkish Airlines

7.3

Good

3,753 reviews

Porter Airlines

8.0

Very good

280 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Dec 2024

YYZ - LAS

Scandinavian Airlines

7.3

Good

1,333 reviews

Porter Airlines

8.0

Very good

280 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Dec 2024

YYZ - LAS

Related info for your journey

What airport do you fly into for flights to Lisbon from Washington, D.C. Dulles Intl?
Most people fly into Lisbon Humberto Delgado (LIS) if they book a flight to Lisbon from Washington, D.C. Dulles Intl. On average, Humberto Delgado has 4 inbound flights from Washington, D.C. Dulles Intl per day from 13 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Lisbon round-trip?
Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Lisbon round-trip from $636. Other airlines that can offer you cheap pricing are Royal Air Maroc, from $662, and Aer Lingus, from $683. Porter Airlines is currently priced 29% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Lisbon one-way?
The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $388. However, be on the lookout for offers from Scandinavian Airlines and Royal Air Maroc, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Lisbon for a low price.
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Lisbon?
The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Lisbon are JetBlue (79%), TAP AIR PORTUGAL (77%) and Air Canada (73%).
What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Lisbon?
The cheapest flight price from Washington, D.C. Dulles Intl Airport to Lisbon is $251. On average you can expect to pay $1,693. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $554.
Can I find deals for flights from Dulles Intl to Lisbon that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Lisbon?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Lisbon.
Can I find deals for business class flights from Dulles Intl to Lisbon?
Yes. Cheapflights offers flight deals from Dulles Intl to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of $612). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of $1,203). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Sintra

Almada

Beja

Costa da Caparica

Nazaré

Evora

Torres Vedras

Oeiras

Sesimbra

Fátima

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to Lisbon

Reagan-National to Lisbon flights

Baltimore to Lisbon flights

Dulles Intl to Porto flights

Reagan-National to Porto flights

Baltimore to Porto flights

Dulles Intl to Ponta Delgada flights

Dulles Intl to Faro flights

Reagan-National to Ponta Delgada flights

Reagan-National to Faro flights

Baltimore to Faro flights

Baltimore to Ponta Delgada flights

Dulles Intl to Funchal flights

Reagan-National to Funchal flights

Baltimore to Funchal flights

Dulles Intl to Lajes flights

Baltimore to Lajes flights

Dulles Intl to Pico Island flights

Dulles Intl to Porto Santo flights

Dulles Intl to Horta flights

Other flights to Lisbon

Top 10 airlines flying from Dulles Intl to Lisbon

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest$332	Average$391	FlexibilityNo cancel fee	On-timeN/A
TAP AIR PORTUGAL	Cheapest$515	Average$896	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$536	Average$765	FlexibilityNo cancel fee	On-time71%
British Airways	Cheapest$551	Average$746	FlexibilityNo cancel fee	On-time70%
Royal Air Maroc	Cheapest$552	Average$626	FlexibilityNo cancel fee	On-time75%
Turkish Airlines	Cheapest$586	Average$670	FlexibilityNo cancel fee	On-time77%
Iberia	Cheapest$592	Average$748	FlexibilityNo cancel fee	On-time77%
Air France	Cheapest$631	Average$918	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$634	Average$867	FlexibilityNo cancel fee	On-timeN/A
Aer Lingus	Cheapest$658	Average$945	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$368+ Cheap flights from Dulles Intl (IAD) to Lisbon (LIS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Lisbon with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado are usually found in February or November, booked 26 days in advance, depart on a Tuesday or Monday and return on a Friday

Cheap flight deals from Dulles Intl to Lisbon

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Dulles Intl to Lisbon

Cheapest flights from Dulles Intl to LisbonExplore the most affordable flight options available from Dulles Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Explore the most affordable flight options available from Dulles Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Lisbon that are best for you.

Compare providers for flights from Dulles Intl to Lisbon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Lisbon in April.

The best insider tips for Washington, D.C. Dulles Intl Airport to Lisbon flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Lisbon trip

Airports

IAD

LIS

Our travel experts

Best time to book a flight from Dulles Intl to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Dulles Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Lisbon

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Lisbon. Price data was last updated on April 4, 2025.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

What is the cheapest time of day to fly from IAD to LIS?

Find hourly flight availability from Dulles Intl to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 11, 2025.

Rainfall in Lisbon by month

Plan your trip to Lisbon by taking into account the average rainfall totals by month.

Temperature in Lisbon by month

Plan your trip to Lisbon by taking into account the average temperature totals by month.

Reviews of airlines servicing Lisbon

To help decide which airline to fly from Washington, D.C. to Lisbon, see what other customers have to say about Porter Airlines, United Airlines and JetBlue. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Lisbon from Washington, D.C. Dulles Intl?

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Lisbon round-trip?

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Lisbon one-way?

What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Lisbon?

What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Lisbon?

Can I find deals for flights from Dulles Intl to Lisbon that include hotel bookings?

How can I find direct flights from Dulles Intl to Lisbon?

Can I find deals for business class flights from Dulles Intl to Lisbon?

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Lisbon

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Dulles Intl to Lisbon

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Dulles Intl to Lisbon
Explore the most affordable flight options available from Dulles Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.