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Find cheap one-way flights from Washington D.C. to Porto starting at US$295.

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Washington D.C. to Porto?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Washington D.C. to Porto

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

American Airlines
From US$237
PLAY Airline
From US$289
United Airlines
From US$377
Royal Air Maroc
From US$414
WestJet
From US$419
TAP Air Portugal
From US$457
Iberia
From US$469
Lufthansa
From US$471
Swiss Airlines
From US$472
Brussels Airlines
From US$501
ANA airlines

Find more flights and airlines

Find cheap flights from Washington D.C. to Porto by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Washington D.C. to Porto.

  • Cheapest
    American Airlines
    DCA
    16:40
    33h 10m
    2 transfer
    OPO
    06:50
    Ronald Reagan Washington National Airport - Francisco Sa Carneiro International Airport
    Tue, Apr 2American Airlines
    US$237
  • PLAY Airline
    IAD
    18:50
    32h 5m
    2 transfer
    OPO
    07:55
    Dulles International Airport - Francisco Sa Carneiro International Airport
    Mon, May 20PLAY Airline
    US$289
  • PLAY Airline
    IAD
    18:50
    32h 5m
    2 transfer
    OPO
    07:55
    Dulles International Airport - Francisco Sa Carneiro International Airport
    Mon, May 20PLAY Airline
    US$289
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Washington D.C. (WAS) to Porto (OPO) the cheapest?

    Airlines adjust prices for flights from Washington D.C. to Porto based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Washington D.C. (WAS) to Porto (OPO) cost?

    According to Trip.com's data, the lowest price is around $1,060.
  • 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 9km. It takes about 20 minutes by taxi.

Washington D.C. to Porto Flight Information

Cheapest nonstop flight price

$294

Off-season for travel

November

Peak season for travel

June