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Porto Airport to Dulles International Airport flight

Explore the cheapest one-way and round-trip flights from Porto Airport to Dulles International Airport over the next 90 days, with one-way fares from £313 and round-trip from £441. Based on Trip.com's latest 7-day flight data.

    • OPO 11:00 AM
      14h 35m
      1 stop
      IAD 8:35 PM
      Porto - Washington D.C. | Thu, Nov 19 | TAP Air Portugal
      IAD 10:30 PM
      10h
      1 stop
      OPO 1:30 PM
      Washington D.C. - Porto | Mon, Nov 23 | TAP Air Portugal
      £441 £513
      14% off
      14% off
      £513 £441
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Tue, Nov 17 | American Airlines
      IAD 5:50 PM
      12h 55m
      1 stop
      OPO 11:45 AM
      Washington D.C. - Porto | Tue, Nov 24 | American Airlines
      £445 £513
      13% off
      13% off
      £513 £445
    • OPO 5:00 AM
      15h 55m
      1 stop
      IAD 3:55 PM
      Porto - Washington D.C. | Tue, Nov 17 | KLM
      IAD 6:40 PM
      10h 55m
      1 stop
      OPO 10:35 AM
      Washington D.C. - Porto | Tue, Nov 24 | Air France
      £445 £513
      13% off
      13% off
      £513 £445
    • OPO 4:10 PM
      28h 35m
      1 stop
      IAD 3:45 PM
      Porto - Washington D.C. | Thu, Nov 19 | KLM
      IAD 6:40 PM
      10h 55m
      1 stop
      OPO 10:35 AM
      Washington D.C. - Porto | Mon, Nov 23 | KLM
      £446
      13% off
      £513 £446
    • OPO 6:25 AM
      15h 5m
      1 stop
      IAD 4:30 PM
      Porto - Washington D.C. | Tue, Nov 17 | Air France
      IAD 6:40 PM
      10h 55m
      1 stop
      OPO 10:35 AM
      Washington D.C. - Porto | Tue, Nov 24 | Air France
      £448
      13% off
      £513 £448
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Tue, Nov 17 | Iberia
      IAD 5:50 PM
      17h 10m
      1 stop
      OPO 4:00 PM
      Washington D.C. - Porto | Tue, Nov 24 | Iberia
      £449
      12% off
      £513 £449
    • OPO 5:55 AM
      15h 35m
      1 stop
      IAD 4:30 PM
      Porto - Washington D.C. | Thu, Nov 19 | Air France
      IAD 6:40 PM
      10h 55m
      1 stop
      OPO 10:35 AM
      Washington D.C. - Porto | Mon, Nov 23 | Air France
      £449
      12% off
      £513 £449
    • OPO 5:00 AM
      15h 15m
      1 stop
      IAD 3:15 PM
      Porto - Washington D.C. | Fri, Dec 11 | TAP Air Portugal
      IAD 10:30 PM
      10h
      1 stop
      OPO 1:30 PM
      Washington D.C. - Porto | Mon, Dec 14 | TAP Air Portugal
      £449
      12% off
      £513 £449
    • OPO 4:10 PM
      28h 45m
      1 stop
      IAD 3:55 PM
      Porto - Washington D.C. | Fri, Nov 20 | KLM
      DCA 7:20 PM
      31h 55m
      1 stop
      OPO 8:15 AM
      Washington D.C. - Porto | Sun, Nov 22 | Delta Air Lines
      £451
      12% off
      £513 £451
    • OPO 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      Porto - Washington D.C. | Tue, Nov 10 | Normal Airline
      WAS 3:00 PM
      6h
      Nonstop
      OPO 4:00 PM
      Washington D.C. - Porto | Thu, Nov 12 | Normal Airline
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    • Cheapest
      OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Tue, Nov 24 | American Airlines
      £313 £702
      55% off
      55% off
      £702 £313
    • OPO 11:15 AM
      12h 50m
      1 stop
      IAD 7:05 PM
      Porto - Washington D.C. | Sun, Dec 13 | Royal Air Maroc
      £318 £702
      55% off
      55% off
      £702 £318
    • OPO 8:40 PM
      24h 40m
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Sat, Dec 5 | Iberia
      £323 £702
      54% off
      54% off
      £702 £323
    • OPO 8:40 PM
      24h 40m
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Fri, Dec 11 | Iberia
      £324
      54% off
      £702 £324
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Thu, Nov 19 | Iberia
      £327
      53% off
      £702 £327
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Sat, Nov 14 | American Airlines
      £328
      53% off
      £702 £328
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Tue, Nov 24 | Iberia
      £329
      53% off
      £702 £329
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Fri, Nov 13 | American Airlines
      £329
      53% off
      £702 £329
    • OPO 8:40 PM
      24h 40m
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Sat, Dec 19 | Iberia
      £332
      53% off
      £702 £332
    • OPO 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      Porto - Washington D.C. | Tue, Nov 10 | Normal Airline
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    • OPO 8:30 AM
      12h 10m
      1 stop
      IAD 3:40 PM
      Porto - Washington D.C. | Fri, Nov 27 | United Airlines
      £789 £887
      11% off
      11% off
      £887 £789
    • OPO 11:15 AM
      12h 50m
      1 stop
      IAD 7:05 PM
      Porto - Washington D.C. | Sun, Dec 13 | Royal Air Maroc
      £318 £702
      55% off
      55% off
      £702 £318
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Tue, Nov 24 | American Airlines
      £313 £702
      55% off
      55% off
      £702 £313
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Thu, Nov 19 | Iberia
      £327
      53% off
      £702 £327
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Sat, Nov 14 | American Airlines
      £328
      53% off
      £702 £328
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Tue, Nov 24 | Iberia
      £329
      53% off
      £702 £329
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Fri, Nov 13 | American Airlines
      £329
      53% off
      £702 £329
    • OPO 8:20 AM
      13h
      1 stop
      IAD 4:20 PM
      Porto - Washington D.C. | Sat, Nov 21 | American Airlines
      £624
      11% off
      £702 £624
    • OPO 5:55 AM
      15h 35m
      1 stop
      IAD 4:30 PM
      Porto - Washington D.C. | Fri, Dec 11 | Air France
      £332
      53% off
      £702 £332
    • OPO 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      Porto - Washington D.C. | Tue, Nov 10 | Normal Airline
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Displayed flight fares from Porto to Washington D.C. are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from Porto Airport to Dulles International Airport?

The cheapest airline flying from Porto Airport to Dulles International Airport is American Airlines (from £313) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

American Airlines
From £313
Royal Air Maroc
From £318
Iberia
From £323
KLM
From £332
Air France
From £332
TAP Air Portugal
From £345
Ryanair
From £348
Air Europa
From £356
British Airways
From £357
Finnair
From £394

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What is the flight schedule from Porto Airport to Dulles International Airport?

Check the schedule for flights from Porto to Washington D.C. and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. TP1921

    Porto Airport

    8:30 AM

    OPO

    1h

    Nonstop

    9:30 AM

    LIS

    S M T W T F S
    Search

  2. TP231

    Humberto Delgado Airport

    10:55 AM

    LIS

    8h 50m

    Nonstop

    2:45 PM

    IAD

    S M - W - F -

  3. AT995

    Porto Airport

    11:15 AM

    OPO

    1h 40m

    Nonstop

    12:55 PM

    CMN

    - - - W - F -
    Search

  4. AT218

    Casablanca Mohamed V. Airport

    3:00 PM

    CMN

    8h

    Nonstop

    7:00 PM

    IAD

    - - T - T - S

  5. IB544

    Porto Airport

    8:20 AM

    OPO

    1h 20m

    Nonstop

    10:40 AM

    MAD

    S M T W T F S
    Search

  6. IB361

    Adolfo Suárez Madrid-Barajas Airport

    12:40 PM

    MAD

    9h 40m

    Nonstop

    4:20 PM

    IAD

    S - T W T F -

  7. TP1939

    Porto Airport

    7:00 AM

    OPO

    55m

    Nonstop

    7:55 AM

    LIS

    S M T W T F S
    Search

  8. TP231

    Humberto Delgado Airport

    10:55 AM

    LIS

    8h 50m

    Nonstop

    2:45 PM

    IAD

    S M - W - F -

  9. TP1925

    Porto Airport

    11:00 AM

    OPO

    1h

    Nonstop

    12:00 PM

    LIS

    S M T W T F S
    Search

  10. TP233

    Humberto Delgado Airport

    4:45 PM

    LIS

    8h 50m

    Nonstop

    8:35 PM

    IAD

    - - T - T - S

  11. AF1517

    Porto Airport

    5:55 AM

    OPO

    2h 25m

    Nonstop

    9:20 AM

    CDG

    S M T W T F S
    Search

  12. AF050

    Roissy-Charles De Gaulle Airport

    1:35 PM

    CDG

    8h 50m

    Nonstop

    4:25 PM

    IAD

    S M T W T F S

  13. KL2435

    Porto Airport

    5:55 AM

    OPO

    2h 25m

    Nonstop

    9:20 AM

    CDG

    S M T W T F S
    Search

  14. KL2120

    Roissy-Charles De Gaulle Airport

    1:25 PM

    CDG

    8h 40m

    Nonstop

    4:05 PM

    IAD

    S M T W T F S

  15. TP1937

    Porto Airport

    5:00 AM

    OPO

    1h

    Nonstop

    6:00 AM

    LIS

    S M T W T F S
    Search

  16. TP231

    Humberto Delgado Airport

    10:55 AM

    LIS

    8h 50m

    Nonstop

    2:45 PM

    IAD

    S M - W - F -

  17. UX1144

    Porto Airport

    7:35 AM

    OPO

    1h 10m

    Nonstop

    9:45 AM

    MAD

    S M T W T F S
    Search

  18. AT973

    Adolfo Suárez Madrid-Barajas Airport

    1:00 PM

    MAD

    1h 45m

    Nonstop

    1:45 PM

    CMN

    S M T W T F S

  19. AT218

    Casablanca Mohamed V. Airport

    3:00 PM

    CMN

    8h

    Nonstop

    7:00 PM

    IAD

    - - T - T - S

  20. KL2284

    Porto Airport

    11:30 AM

    OPO

    2h 20m

    Nonstop

    2:50 PM

    CDG

    S M T W T F S
    Search

  21. KL2142

    Roissy-Charles De Gaulle Airport

    4:05 PM

    CDG

    8h 45m

    Nonstop

    6:50 PM

    DTW

    - M - W - F S

  22. KL7469

    Detroit Metropolitan Wayne County Airport

    9:46 PM

    DTW

    1h 34m

    Nonstop

    11:20 PM

    IAD

    S M T W T F S
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About Porto Airport and Dulles International Airport

Learn about Porto Airport (OPO) and Dulles International Airport (IAD) — including location, terminals, transportation, and travel tips.

Flight distance 5,703.63 km
Cheapest one-way ticket price £313
Cheapest return ticket price £441

FAQs for Porto Airport to Dulles International Airport Flights

  • What are the cheapest flights from Porto Airport to Dulles International Airport?

    One-way flights from Porto Airport to Dulles International Airport currently start from £313, and round-trip fares start from £441. The current lowest fare is a American Airlines flight departing on Tue, Nov 24; prices may vary depending on availability.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Porto Airport to Dulles International Airport is £593. Prices may vary depending on the departure date, airline, and availability.
  • Enter Porto Airport and Dulles International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Popular Destinations

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.