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Dulles International Airport to Porto Airport flight

Explore the cheapest one-way and round-trip flights from Dulles International Airport to Porto Airport over the next 90 days, with one-way fares from TWD 13,017 and round-trip from TWD 18,029. Based on Trip.com's latest 7-day flight data.

      • IAD 5:50 PM
        17h 10m
        1 stop
        OPO 4:00 PM
        Washington D.C. - Porto | Sat, Nov 28 | American Airlines
        OPO 8:40 PM
        24h 40m
        1 stop
        IAD 4:20 PM
        Porto - Washington D.C. | Sat, Dec 5 | American Airlines
        TWD 18,029 TWD 24,870
        28% off
        28% off
        TWD 24,870 TWD 18,029
      • IAD 5:50 PM
        10h 40m
        1 stop
        OPO 9:30 AM
        Washington D.C. - Porto | Fri, Nov 20 | United Airlines
        OPO 12:35 PM
        23h 45m
        1 stop
        IAD 7:20 AM
        Porto - Washington D.C. | Fri, Nov 27 | United Airlines
        TWD 18,386 TWD 24,870
        26% off
        26% off
        TWD 24,870 TWD 18,386
      • IAD 10:30 PM
        11h 30m
        1 stop
        OPO 3:00 PM
        Washington D.C. - Porto | Sat, Dec 5 | TAP Air Portugal
        OPO 11:00 AM
        14h 30m
        1 stop
        IAD 8:30 PM
        Porto - Washington D.C. | Sat, Dec 12 | TAP Air Portugal
        TWD 18,562 TWD 24,870
        25% off
        25% off
        TWD 24,870 TWD 18,562
      • IAD 10:30 PM
        10h
        1 stop
        OPO 1:30 PM
        Washington D.C. - Porto | Mon, Nov 16 | TAP Air Portugal
        OPO 8:30 AM
        17h
        1 stop
        IAD 8:30 PM
        Porto - Washington D.C. | Mon, Nov 23 | TAP Air Portugal
        TWD 18,566
        25% off
        TWD 24,870 TWD 18,566
      • IAD 5:25 PM
        11h 35m
        1 stop
        OPO 10:00 AM
        Washington D.C. - Porto | Sun, Nov 15 | TAP Air Portugal
        OPO 5:00 AM
        15h 15m
        1 stop
        IAD 3:15 PM
        Porto - Washington D.C. | Sun, Nov 22 | TAP Air Portugal
        TWD 18,566
        25% off
        TWD 24,870 TWD 18,566
      • IAD 5:25 PM
        11h 35m
        1 stop
        OPO 10:00 AM
        Washington D.C. - Porto | Sun, Nov 29 | TAP Air Portugal
        OPO 5:00 AM
        15h 15m
        1 stop
        IAD 3:15 PM
        Porto - Washington D.C. | Sun, Dec 6 | TAP Air Portugal
        TWD 18,571
        25% off
        TWD 24,870 TWD 18,571
      • IAD 10:30 PM
        15h 30m
        1 stop
        OPO 7:00 PM
        Washington D.C. - Porto | Sat, Nov 14 | TAP Air Portugal
        OPO 6:00 PM
        26h 15m
        1 stop
        IAD 3:15 PM
        Porto - Washington D.C. | Wed, Nov 18 | TAP Air Portugal
        TWD 18,628
        25% off
        TWD 24,870 TWD 18,628
      • IAD 5:25 PM
        12h 35m
        1 stop
        OPO 11:00 AM
        Washington D.C. - Porto | Fri, Dec 4 | TAP Air Portugal
        OPO 5:00 AM
        14h 40m
        1 stop
        IAD 2:40 PM
        Porto - Washington D.C. | Fri, Dec 11 | TAP Air Portugal
        TWD 18,642
        25% off
        TWD 24,870 TWD 18,642
      • IAD 5:25 PM
        19h 35m
        1 stop
        OPO 6:00 PM
        Washington D.C. - Porto | Fri, Nov 13 | TAP Air Portugal
        OPO 5:00 AM
        14h 40m
        1 stop
        IAD 2:40 PM
        Porto - Washington D.C. | Fri, Nov 20 | TAP Air Portugal
        TWD 18,652
        25% off
        TWD 24,870 TWD 18,652
      • IAD 5:25 PM
        23h 35m
        1 stop
        OPO 10:00 PM
        Washington D.C. - Porto | Thu, Nov 19 | TAP Air Portugal
        OPO 4:00 PM
        27h 40m
        1 stop
        IAD 2:40 PM
        Porto - Washington D.C. | Thu, Nov 26 | TAP Air Portugal
        TWD 18,652
        25% off
        TWD 24,870 TWD 18,652
      • IAD 10:30 PM
        15h 30m
        1 stop
        OPO 7:00 PM
        Washington D.C. - Porto | Sat, Nov 7 | TAP Air Portugal
        OPO 6:00 PM
        26h 15m
        1 stop
        IAD 3:15 PM
        Porto - Washington D.C. | Sat, Nov 14 | TAP Air Portugal
        TWD 18,652
        25% off
        TWD 24,870 TWD 18,652
      • IAD 10:30 PM
        15h 30m
        1 stop
        OPO 7:00 PM
        Washington D.C. - Porto | Wed, Nov 18 | TAP Air Portugal
        OPO 5:00 AM
        20h 35m
        1 stop
        IAD 8:35 PM
        Porto - Washington D.C. | Wed, Nov 25 | TAP Air Portugal
        TWD 18,652
        25% off
        TWD 24,870 TWD 18,652
      • WAS 1:00 PM
        17h 25m
        1 stop
        OPO 2:00 PM
        Washington D.C. - Porto | Sat, Oct 10 | Normal Airline
        OPO 3:00 PM
        6h
        Nonstop
        WAS 4:00 PM
        Porto - Washington D.C. | Mon, Oct 12 | Normal Airline
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      • IAD 11:25 AM
        19h 20m
        1 stop
        OPO 11:45 AM
        Washington D.C. - Porto | Fri, Oct 23 | Porter Airlines
        TWD 13,017 TWD 20,372
        36% off
        36% off
        TWD 20,372 TWD 13,017
      • IAD 10:30 PM
        21h
        1 stop
        OPO 12:30 AM
        Washington D.C. - Porto | Sun, Nov 8 | TAP Air Portugal
        TWD 13,896 TWD 20,372
        32% off
        32% off
        TWD 20,372 TWD 13,896
      • IAD 6:25 PM
        26h 5m
        1 stop
        OPO 12:30 AM
        Washington D.C. - Porto | Mon, Oct 26 | TAP Air Portugal
        TWD 13,930 TWD 20,372
        32% off
        32% off
        TWD 20,372 TWD 13,930
      • IAD 5:05 PM
        20h 55m
        1 stop
        OPO 6:00 PM
        Washington D.C. - Porto | Sat, Oct 24 | TAP Air Portugal
        TWD 14,500
        28% off
        TWD 20,372 TWD 14,500
      • IAD 8:37 AM
        19h 53m
        1 stop
        OPO 9:30 AM
        Washington D.C. - Porto | Sun, Nov 8 | United Airlines
        TWD 14,514
        28% off
        TWD 20,372 TWD 14,514
      • IAD 12:30 PM
        14h 45m
        1 stop
        OPO 8:15 AM
        Washington D.C. - Porto | Sun, Nov 8 | Delta Air Lines
        TWD 14,523
        28% off
        TWD 20,372 TWD 14,523
      • IAD 5:05 PM
        24h 50m
        1 stop
        OPO 10:55 PM
        Washington D.C. - Porto | Fri, Oct 23 | TAP Air Portugal
        TWD 14,571
        28% off
        TWD 20,372 TWD 14,571
      • IAD 12:36 PM
        16h 54m
        1 stop
        OPO 9:30 AM
        Washington D.C. - Porto | Mon, Oct 26 | United Airlines
        TWD 14,842
        27% off
        TWD 20,372 TWD 14,842
      • IAD 11:20 AM
        14h 45m
        1 stop
        OPO 7:05 AM
        Washington D.C. - Porto | Fri, Nov 20 | Porter Airlines
        TWD 14,951
        27% off
        TWD 20,372 TWD 14,951
      • IAD 10:40 PM
        30h 50m
        1 stop
        OPO 9:30 AM
        Washington D.C. - Porto | Sat, Oct 24 | United Airlines
        TWD 15,036
        26% off
        TWD 20,372 TWD 15,036
      • IAD 10:30 PM
        19h 30m
        1 stop
        OPO 10:00 PM
        Washington D.C. - Porto | Mon, Oct 26 | Delta Air Lines
        TWD 15,141
        26% off
        TWD 20,372 TWD 15,141
      • IAD 8:10 PM
        34h 5m
        1 stop
        OPO 11:15 AM
        Washington D.C. - Porto | Sun, Nov 8 | Swiss Airlines
        TWD 15,279
        25% off
        TWD 20,372 TWD 15,279
      • WAS 1:00 PM
        17h 25m
        1 stop
        OPO 2:00 PM
        Washington D.C. - Porto | Sat, Oct 10 | Normal Airline
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Displayed flight fares from Dulles International Airport to Porto Airport 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 Dulles International Airport to Porto Airport?

The cheapest airline flying from Dulles International Airport to Porto Airport is Icelandair (from TWD 11,887) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Icelandair
From TWD 11,887
Porter Airlines
From TWD 13,017
Delta Air Lines
From TWD 13,621
TAP Air Portugal
From TWD 13,896
United Airlines
From TWD 14,514
Swiss Airlines
From TWD 15,279
Lufthansa
From TWD 15,341
Brussels Airlines
From TWD 15,350
KLM
From TWD 15,364
Air France
From TWD 15,364

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

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. BA292

    Dulles International Airport

    10:25 PM

    IAD

    7h 25m

    Nonstop

    10:50 AM

    LHR

    S M T W T F S
    Search

  2. BA2666

    Gatwick Airport

    2:20 PM

    LGW

    2h 25m

    Nonstop

    4:45 PM

    OPO

    - M - W T F -

  3. FI644

    Dulles International Airport

    8:30 PM

    IAD

    5h 55m

    Nonstop

    6:25 AM

    KEF

    S M - W T F -
    Search

  4. FI204

    Reykjavik Keflavik Airport

    7:40 AM

    KEF

    3h 15m

    Nonstop

    12:55 PM

    CPH

    S M T W T F S

  5. SK2773

    Copenhagen Airport

    7:15 AM

    CPH

    3h 30m

    Nonstop

    9:45 AM

    OPO

    S - T W T - S

  6. LH419

    Dulles International Airport

    6:05 PM

    IAD

    7h 50m

    Nonstop

    7:55 AM

    FRA

    S M T W T F S
    Search

  7. LH1176

    Frankfurt Intl. Airport

    9:25 AM

    FRA

    2h 50m

    Nonstop

    11:15 AM

    OPO

    S M T W T F S

  8. AC8724

    Dulles International Airport

    9:55 AM

    IAD

    1h 43m

    Nonstop

    11:38 AM

    YUL

    S M T W T F S
    Search

  9. AC928

    Montreal Pierre Elliott Trudeau Airport

    8:50 PM

    YUL

    6h 40m

    Nonstop

    8:30 AM

    OPO

    S M T - T F -

  10. IB362

    Dulles International Airport

    5:50 PM

    IAD

    7h 50m

    Nonstop

    7:40 AM

    MAD

    S - T - T F S
    Search

  11. IB1151

    Adolfo Suárez Madrid-Barajas Airport

    3:40 PM

    MAD

    1h 20m

    Nonstop

    4:00 PM

    OPO

    S M T W T F S

  12. DL8752

    Dulles International Airport

    9:45 PM

    IAD

    7h 30m

    Nonstop

    11:15 AM

    CDG

    - M T W - F S
    Search

  13. DL8408

    Roissy-Charles De Gaulle Airport

    8:45 PM

    CDG

    2h 15m

    Nonstop

    10:00 PM

    OPO

    - - - W - - -

  14. PD2720

    Dulles International Airport

    11:25 AM

    IAD

    1h 30m

    Nonstop

    12:55 PM

    YTZ

    S M T W T F S
    Search

  15. TS764

    Toronto Pearson International Airport

    11:55 PM

    YYZ

    7h

    Nonstop

    11:55 AM

    OPO

    - - T - T - S

  16. AF053

    Dulles International Airport

    9:45 PM

    IAD

    7h 30m

    Nonstop

    11:15 AM

    CDG

    - M T W - F S
    Search

  17. AF1516

    Roissy-Charles De Gaulle Airport

    8:45 PM

    CDG

    2h 15m

    Nonstop

    10:00 PM

    OPO

    S M T W T F S

  18. KL2372

    Dulles International Airport

    9:45 PM

    IAD

    7h 30m

    Nonstop

    11:15 AM

    CDG

    - M T W - F S
    Search

  19. KL2394

    Roissy-Charles De Gaulle Airport

    4:50 PM

    CDG

    2h 25m

    Nonstop

    6:15 PM

    OPO

    S M T W T F S

  20. DL8752

    Dulles International Airport

    9:45 PM

    IAD

    7h 30m

    Nonstop

    11:15 AM

    CDG

    - M T W - F S
    Search

  21. DL8586

    Roissy-Charles De Gaulle Airport

    8:45 PM

    CDG

    2h 15m

    Nonstop

    10:00 PM

    OPO

    - - - - - F -
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About Dulles International Airport and Porto Airport

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

Flight distance 5,703.63 km
Cheapest one-way ticket price TWD 13,017
Cheapest return ticket price TWD 18,029

FAQs for Dulles International Airport to Porto Airport Flights

  • What is the transportation method from the main airport to downtown in Porto?

    • The distance from Francisco Sa Carneiro International Airport to downtown is about 9 km. It takes about 20 minutes by taxi.
  • The closest airport to Porto Airport (OPO) is Viseu Airport. The distance is around 87 km.
  • One-way flights from Dulles International Airport to Porto Airport currently start from TWD 13,017, and round-trip fares start from TWD 18,029. The current lowest fare is a Porter Airlines flight departing on Fri, Oct 23; 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 Dulles International Airport to Porto Airport is TWD 18,260. Prices may vary depending on the departure date, airline, and availability.
  • Enter Dulles International Airport and Porto 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.