Cheap flights from Portugal to Dulles Intl (IAD) from $295

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
LIS — IAD
Jun 17 — Jun 241

How far in advance should I book a flight from Portugal to Washington, D.C. Dulles Intl Airport?

Travelers have found it’s best to book a flight 30 days in advance to save up to 22% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 30 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Portugal to Washington, D.C. Dulles Intl Airport 1-2 weeks in advance for as low as $632, or $644 for flights within the next 24 hours.

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

The best pricing can be found in the month of November. Prices to Washington, D.C. Dulles Intl Airport from Portugal average $688. You can even find prices in November for less than $688, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $483. The month of July appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Portugal. Flying in the targeted month can save you up to 38%.

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

When flying from Portugal to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Portugal to Dulles Intl flights in June & July 2024

Find cheap flight options from Portugal to Dulles Intl specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,117,830 searches. Prices were last updated on June 12, 2024.
These are some of the most attractive deals on flights from Portugal to Washington, D.C. in 2024. Check back regularly for other flight deals.
Thu 6/139:25 pmLIS - IAD
1 stop26h 55mRoyal Air Maroc
Wed 7/319:20 pmIAD - LIS
1 stop15h 20mRoyal Air Maroc
Deal found 6/12$654
Sun 6/169:15 pmOPO - IAD
1 stop27h 05mMultiple Airlines
Mon 8/510:25 pmIAD - OPO
1 stop11h 35mMultiple Airlines
Deal found 6/12$657
Sun 6/169:15 pmOPO - IAD
1 stop27h 05mMultiple Airlines
Mon 8/510:25 pmIAD - OPO
1 stop11h 35mMultiple Airlines
Deal found 6/11$658
Thu 6/206:00 amOPO - IAD
1 stop15h 05mUnited Airlines
Thu 7/46:00 amIAD - OPO
1 stop19h 55mUnited Airlines
Deal found 6/11$712
Thu 6/206:15 amLIS - IAD
1 stop14h 40mUnited Airlines
Fri 7/58:30 amIAD - LIS
1 stop18h 50mUnited Airlines
Deal found 6/12$716
Thu 6/206:15 amLIS - IAD
1 stop18h 10mLufthansa
Thu 7/410:15 pmIAD - LIS
Nonstop7h 15mLufthansa
Deal found 6/11$717
Thu 6/206:15 amLIS - IAD
1 stop18h 10mUnited Airlines
Thu 7/412:45 pmIAD - LIS
1 stop17h 45mUnited Airlines
Deal found 6/11$720
Thu 6/206:15 amLIS - IAD
2 stops23h 32mUnited Airlines
Thu 7/412:45 pmIAD - LIS
1 stop14h 35mUnited Airlines
Deal found 6/11$722
Tue 6/256:15 amLIS - IAD
1 stop14h 40mUnited Airlines
Thu 8/296:30 amIAD - LIS
1 stop23h 40mUnited Airlines
Deal found 6/12$723

Portugal to Dulles Intl 2024 flight deals

Discover exclusive flight deals for travel between Portugal and Dulles Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 12, 2024.
These are some of the most attractive deals on flights from Portugal to Washington, D.C. in 2024. Check back regularly for other flight deals.
Thu 9/57:00 amOPO - IAD
1 stop18h 20mTAP AIR PORTUGAL
Sat 11/305:30 pmIAD - OPO
1 stop23h 30mTAP AIR PORTUGAL
Deal found 6/12$492
Thu 11/75:55 pmLIS - IAD
1 stop29h 35mRoyal Air Maroc
Wed 11/208:30 pmIAD - LIS
1 stop10h 05mRoyal Air Maroc
Deal found 6/11$515
Thu 10/1711:00 amOPO - IAD
1 stop14h 20mTAP AIR PORTUGAL
Fri 11/111:30 pmIAD - OPO
1 stop15h 30mTAP AIR PORTUGAL
Deal found 6/11$521
Thu 9/512:30 pmLIS - IAD
1 stop11h 45mMultiple Airlines
Mon 9/95:55 pmIAD - LIS
1 stop24h 20mMultiple Airlines
Deal found 6/11$542
Thu 9/265:00 amLIS - IAD
2 stops17h 30mDelta
Mon 10/1412:30 pmIAD - LIS
2 stops15h 20mDelta
Deal found 6/11$544
Wed 9/185:00 amLIS - IAD
1 stop16h 00mDelta
Tue 9/249:20 pmIAD - LIS
1 stop12h 30mDelta
Deal found 6/11$545
Thu 9/265:40 amLIS - IAD
1 stop15h 30mDelta
Mon 10/149:20 pmIAD - LIS
1 stop12h 30mDelta
Deal found 6/11$546
Thu 11/76:10 amLIS - IAD
1 stop18h 55mUnited Airlines
Tue 11/1910:10 pmIAD - LIS
Nonstop7h 20mUnited Airlines
Deal found 6/11$547
Thu 9/56:30 amOPO - IAD
2 stops15h 54mMultiple Airlines
Sat 11/306:45 pmIAD - OPO
1 stop11h 05mMultiple Airlines
Deal found 6/12$547

Portugal to Dulles Intl flights leaving soon

Find last-minute flight options from Portugal to Dulles Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 12, 2024.
Have a look at some of the flights available from Portugal to Washington, D.C. departing last-minute. Tip: verify your flight details before completing your reservation.
Thu 6/206:00 amOPO - IAD
1 stop15h 05mUnited Airlines
Thu 7/46:00 amIAD - OPO
1 stop19h 55mUnited Airlines
Deal found 6/11$712
Thu 6/206:15 amLIS - IAD
1 stop14h 40mUnited Airlines
Fri 7/58:30 amIAD - LIS
1 stop18h 50mUnited Airlines
Deal found 6/12$716
Thu 6/206:15 amLIS - IAD
1 stop18h 10mLufthansa
Thu 7/410:15 pmIAD - LIS
Nonstop7h 15mLufthansa
Deal found 6/11$717
Thu 6/206:15 amLIS - IAD
1 stop18h 10mUnited Airlines
Thu 7/412:45 pmIAD - LIS
1 stop17h 45mUnited Airlines
Deal found 6/11$720
Thu 6/206:15 amLIS - IAD
2 stops23h 32mUnited Airlines
Thu 7/412:45 pmIAD - LIS
1 stop14h 35mUnited Airlines
Deal found 6/11$722
Thu 6/206:15 amLIS - IAD
2 stops23h 32mUnited Airlines
Thu 7/412:45 pmIAD - LIS
1 stop17h 45mUnited Airlines
Deal found 6/11$725
Thu 6/2012:15 pmLIS - IAD
2 stops17h 32mUnited Airlines
Thu 7/45:24 pmIAD - LIS
1 stop13h 06mUnited Airlines
Deal found 6/11$726
Thu 6/2012:20 pmLIS - IAD
Nonstop8h 10mUnited Airlines
Thu 7/410:15 pmIAD - LIS
Nonstop7h 15mUnited Airlines
Deal found 6/11$729
Thu 6/206:15 amOPO - IAD
2 stops14h 50mLufthansa
Thu 7/410:20 pmIAD - OPO
1 stop20h 00mLufthansa
Deal found 6/11$739

One-way flights to Dulles Intl from Portugal

Search for one-way flight options from Portugal to Dulles Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 12, 2024.
Take a look at some of the one-way flights we've detected from Portugal to Washington, D.C.. Users needing a return flight from Portugal to Washington, D.C. should utilize the search form above.
Wed 12/49:55 pmLIS - IAD
2 stops24h 00mMultiple Airlines
Deal found 6/11$295
Thu 10/39:55 pmLIS - IAD
2 stops24h 45mMultiple Airlines
Deal found 6/12$325
Thu 10/179:20 pmOPO - IAD
1 stop25h 20mPLAY
Deal found 6/11$340
Wed 10/169:30 pmLIS - IAD
2 stops25h 10mMultiple Airlines
Deal found 6/12$348
Tue 10/17:00 pmOPO - IAD
1 stop29h 20mRoyal Air Maroc
Deal found 6/11$356
Sat 10/59:55 pmLIS - IAD
2 stops24h 45mMultiple Airlines
Deal found 6/11$359
Thu 10/310:00 pmLIS - IAD
3 stops24h 40mMultiple Airlines
Deal found 6/12$392
Tue 6/189:00 pmLIS - IAD
2 stops25h 40mMultiple Airlines
Deal found 6/11$398
Thu 10/178:55 pmOPO - IAD
2 stops25h 45mMultiple Airlines
Deal found 6/11$402

Find flights from Portugal to Dulles Intl within your budget

Customize your flight search to find flights from Portugal to Dulles Intl 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 3,117,830 searches. Data last updated June 12, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$492 - $596

Route

Depart

Return

Price

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Thu 9/5

1 stop18h 20m

Washington, D.C. Dulles Intl

Sat 11/30

1 stop23h 30m

$492

Lisbon Humberto DelgadoWashington, D.C. Dulles Intl

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 11/7

1 stop29h 35m

Washington, D.C. Dulles Intl

Wed 11/20

1 stop10h 05m

$515

Lisbon Humberto DelgadoWashington, D.C. Dulles Intl

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 9/5

1 stop11h 45m

Washington, D.C. Dulles Intl

Mon 9/9

1 stop24h 20m

$542

Lisbon Humberto DelgadoWashington, D.C. Dulles Intl

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 9/26

2 stops17h 30m

Washington, D.C. Dulles Intl

Mon 9/30

1 stop15h 25m

$544

Lisbon Humberto DelgadoWashington, D.C. Dulles Intl

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 11/7

1 stop18h 55m

Washington, D.C. Dulles Intl

Tue 11/19

Nonstop7h 20m

$547

Lisbon Humberto DelgadoWashington, D.C. Dulles Intl

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 9/9

1 stop18h 15m

Washington, D.C. Dulles Intl

Mon 9/16

1 stop19h 30m

$548

Lisbon Humberto DelgadoWashington, D.C. Dulles Intl

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 9/5

Nonstop8h 25m

Washington, D.C. Dulles Intl

Mon 9/9

Nonstop7h 15m

$553

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Thu 9/19

1 stop25h 55m

Washington, D.C. Dulles Intl

Thu 9/26

1 stop30h 10m

$555

Lisbon Humberto DelgadoWashington, D.C. Dulles Intl

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 9/5

2 stops29h 10m

Washington, D.C. Dulles Intl

Mon 9/9

2 stops23h 05m

$596

Flights are sorted by cheapest first

Deals found on 6/12

No data available for this route at this time. Please check back soon.

Best time to book a flight from Portugal to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Portugal 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.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated June 12, 2024.
See what other customers who have flown with TAP AIR PORTUGAL, Royal Air Maroc and Delta from Portugal to Washington, D.C. have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
10,000 reviews

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

8.0
Very good
10,000 reviews
8.0
Very good
10,000 reviews

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.9
Good
1,466 reviews
8.0
Very good
10,000 reviews

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.7
Good
1,904 reviews
8.0
Very good
10,000 reviews

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.7
Good
1,360 reviews
8.0
Very good
10,000 reviews

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.7
Good
988 reviews
8.0
Very good
10,000 reviews

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find flights from Portugal to Washington, D.C. Dulles Intl Airport for under $500 on Cheapflights?

    Yes, there are multiple flights from Portugal to Washington, D.C. Dulles Intl Airport for under $500. The cheapest flight booked recently is on TAP AIR PORTUGAL for just $492, but on average you can expect to pay $545.

  • Are there nonstop flights from Portugal to Washington, D.C. Dulles Intl Airport for under $600 on Cheapflights?

    Cheapflights has at least 20 direct flights from Portugal to Washington, D.C. Dulles Intl Airport under $600. A good price for a nonstop flight from Portugal to Washington, D.C. Dulles Intl Airport is less than $713.

  • Are there last-minute flights available from Portugal to Washington, D.C. Dulles Intl Airport for under $800?

    There are currently 20+ open flights from Portugal to Washington, D.C. Dulles Intl Airport within the next 7 days for less than $800.

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

    The cheapest airlines for a one-way flight from Portugal to Washington, D.C. Dulles Intl Airport are PLAY ($340), Royal Air Maroc ($356), and TAP AIR PORTUGAL ($457).

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

    Consider Air Canada (82%), United Airlines (82%) or Lufthansa (82%) when booking your flight. These represent the most reliable airlines when flying from Portugal to Washington, D.C. Dulles Intl Airport.

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

    The cheapest flight price from Portugal to Washington, D.C. Dulles Intl Airport is $445. On average you can expect to pay $1,552. The most popular route, (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), can usually be booked for $515.

  • What does LIS to IAD mean?

    LIS and IAD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. LIS to IAD refers to a flight route from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Porto Airport (OPO), Faro Airport (FAO), Funchal Madeira Airport (FNC), Ponta Delgada Nordela Airport (PDL), Lajes Airport (TER).

  • Can I find deals for flights from Portugal to Dulles Intl that include extra baggage allowance?

    The amount of baggage you can bring on your Portugal to Dulles Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Portugal to Dulles Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Portugal to Dulles Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

  • How can I find direct flights from Portugal to Dulles Intl?

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

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

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

  • Can I find deals for flights from Portugal to Dulles Intl that allow pets onboard?

    Many airlines flying from Portugal to Dulles Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Portugal to Dulles Intl?

    Yes, you can often find last-minute deals on Portugal to Dulles Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Portugal to Washington, D.C. Dulles Intl Airport flight deals updated?

    The Portugal to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 6/12.

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

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

    Currently, September is the cheapest month in which you can book a flight from Portugal to Washington, D.C. Dulles Intl Airport (average of $278). Flying from Portugal to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $382). 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

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Alternative routes for Portugal to Dulles Intl
See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Portugal to Dulles Intl

Discover the top 7 airlines that operate flights from Portugal to Dulles Intl. 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 3,117,830 searches. Data last updated June 12, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$479Average$617FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$479Average$521FlexibilityNo cancel feeOn-time70%
KLMCheapest$488Average$540FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$501Average$707FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$546Average$660FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$567Average$819FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$626Average$779FlexibilityNo cancel feeOn-time76%

Search flights from Portugal to Dulles Intl by cabin class

Find flights from Portugal to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Business Classfrom $2,359/person
Prem Econ Classfrom $1,893/person
Economy Classfrom $445/person

Hourly flight availability from Portugal to Dulles Intl

Find hourly flight availability from Portugal to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2024.
0%of flight departuresEarly morningMidnight to 6 am
85%of flight departuresMorning6 am to noon
15%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM
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