HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Lisbon

$369+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LIS
Mar 26 — Apr 21
Wed 3/26
Wed 4/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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 49 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from Dulles Intl to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$586
(FlightHub)

One-way from

$369
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$795

Good round-trip deal

$653 or less

Good one-way deal

$422 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. 20% potential increase in price ($228 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 21, 2025.

This Gotogate deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/911:15 pmIAD - LIS
1 stop17h 05mIcelandair
Thu 8/2110:20 pmLIS - IAD
1 stop28h 50mIcelandair
Deal found 3/20$564
This SmartFares deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/219:05 pmIAD - LIS
1 stop10h 10mRoyal Air Maroc
Tue 9/306:40 pmLIS - IAD
1 stop29h 25mRoyal Air Maroc
Deal found 3/20$570
This FlightHub deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/233:00 pmIAD - LIS
1 stop20h 00mTurkish Airlines
Sun 3/3010:55 amLIS - IAD
1 stop29h 50mTurkish Airlines
Deal found 3/20$586
This Mytrip deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/510:05 pmIAD - LIS
2 stops20h 30mMultiple Airlines
Wed 5/142:10 pmLIS - IAD
2 stops34h 49mMultiple Airlines
Deal found 3/20$611
This KLM deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/412:11 pmIAD - LIS
1 stop14h 49mKLM
Fri 4/113:35 pmLIS - IAD
1 stop29h 00mKLM
Deal found 3/20$677
This Delta deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2612:11 pmIAD - LIS
1 stop14h 49mDelta
Mon 5/510:00 amLIS - IAD
2 stops19h 28mDelta
Deal found 3/20$687
This Gotogate deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2110:20 pmIAD - LIS
Nonstop7h 20mTAP AIR PORTUGAL
Tue 9/3012:00 pmLIS - IAD
Nonstop8h 20mTAP AIR PORTUGAL
Deal found 3/20$713
This United deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/95:20 pmIAD - LIS
1 stop9h 50mUnited Airlines
Tue 11/1811:00 amLIS - IAD
2 stops34h 01mUnited Airlines
Deal found 3/20$719
This Aeromexico deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:05 pmIAD - LIS
1 stop31h 55mAir France
Mon 10/63:55 pmLIS - IAD
2 stops31h 33mAir France
Deal found 3/20$756
This FlightHub deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/139:00 pmIAD - LIS
1 stop19h 35mAer Lingus
Sat 5/2411:25 amLIS - IAD
1 stop12h 30mAer Lingus
Deal found 3/19$770
This Kiwi.com deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/28:45 pmIAD - LIS
1 stop13h 00mSWISS
Fri 4/115:55 amLIS - IAD
1 stop15h 20mSWISS
Deal found 3/19$774
This Booking.com deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1410:05 pmIAD - LIS
2 stops43h 00mScandinavian Airlines
Wed 5/217:15 amLIS - IAD
1 stop17h 44mScandinavian Airlines
Deal found 3/21$780

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl to Lisbon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 21, 2025.
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

Dulles Intl

Fly to

Lisbon

Route

Depart

Return

Price

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sat 8/9

11:15 pm-9:20 pm

1 stop17h 05m

Lisbon Humberto Delgado

Thu 8/21

10:20 pm-10:10 pm

1 stop28h 50m

$564

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sun 9/14

9:05 pm-5:40 pm

1 stop15h 35m

Lisbon Humberto Delgado

Tue 9/30

6:40 pm-7:05 pm

1 stop29h 25m

$602

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 5/5

10:05 pm-11:35 pm

2 stops20h 30m

Lisbon Humberto Delgado

Wed 5/14

2:10 pm-7:59 pm

2 stops34h 49m

$611

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 3/31

1:30 pm-3:30 pm

1 stop21h 00m

Lisbon Humberto Delgado

Mon 5/5

4:30 pm-11:45 am

1 stop24h 15m

$646

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Fri 4/4

12:11 pm-8:00 am

1 stop14h 49m

Lisbon Humberto Delgado

Fri 4/11

3:35 pm-3:35 pm

1 stop29h 00m

$677

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sat 4/26

12:11 pm-8:00 am

1 stop14h 49m

Lisbon Humberto Delgado

Mon 5/5

10:00 am-12:28 am

2 stops19h 28m

$687

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Fri 5/2

9:20 pm-2:50 pm

1 stop12h 30m

Lisbon Humberto Delgado

Sun 5/11

12:10 pm-7:15 pm

1 stop12h 05m

$697

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 4/2

5:29 pm-8:20 am

1 stop9h 51m

Lisbon Humberto Delgado

Wed 4/9

11:25 am-11:44 am

2 stops29h 19m

$719

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sun 4/27

5:45 pm-6:05 am

Nonstop7h 20m

Lisbon Humberto Delgado

Wed 5/7

12:00 pm-3:20 pm

Nonstop8h 20m

$763

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 5/13

9:00 pm-9:35 pm

1 stop19h 35m

Lisbon Humberto Delgado

Sat 5/24

11:25 am-6:55 pm

1 stop12h 30m

$770

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 24 results
1
2
3

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightsMojoPrice 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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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.

Read more about IADby Ramsey Qubein
LIS

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

Read more about LISby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on LIS and IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

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?

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 March 14, 2025.

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 49 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 $1,219). 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?

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 March 21, 2025.

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 26% on the cost of your flight, compared to a flight in the evening.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Lisbon

Explore weekly flight availability from Dulles Intl to Lisbon. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 21, 2025.

The most flights from IAD to LIS are scheduled on a Tuesday (5 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Lisbon by month

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

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

Get insights into the airlines that provide service to Lisbon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lisbon. Reviews last updated March 21, 2025.
To help decide which airline to fly from Washington, D.C. to Lisbon, see what other customers have to say about Delta, KLM and SWISS. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,895 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,895 reviews
Delta
8.0
Very good
7,895 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,319 reviews
Delta
8.0
Very good
7,895 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,567 reviews
Delta
8.0
Very good
7,895 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,422 reviews
Delta
8.0
Very good
7,895 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,895 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    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 15 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 $586. Other airlines that can offer you cheap pricing are Delta, from $677, and United Airlines, from $719. Turkish Airlines is currently priced 35% 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 Scandinavian Airlines, with whom users have recently found tickets for as low as $407. However, be on the lookout for offers from TAP AIR PORTUGAL 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 (86%), TAP AIR PORTUGAL (86%) and Air Canada (78%).

  • 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 $298. On average you can expect to pay $2,276. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $564.

  • 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 $1,219). 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

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Sintra
Almada
Beja
Costa da Caparica
Nazaré
Evora
Torres Vedras
Oeiras
Sesimbra
Fátima

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.

Top 10 airlines flying from Dulles Intl to Lisbon

Discover the top 10 airlines that operate flights from Dulles Intl to Lisbon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$332Average$384FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$430Average$747FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$536Average$906FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$536Average$765FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$540Average$727FlexibilityNo cancel feeOn-time70%
Royal Air MarocCheapest$552Average$653FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$604Average$962FlexibilityNo cancel feeOn-time67%
Turkish AirlinesCheapest$621Average$674FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$631Average$918FlexibilityNo cancel feeOn-time77%
SWISSCheapest$631Average$883FlexibilityNo cancel feeOn-time79%
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.