WAS - OPO

$305 Find Cheap Flights from Washington, D.C. to Porto - Compare and Save

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Everything you should know

Cheapest round-trip
$570
Typical prices: $663-$1,030
United Airlines
Sun 11/11Sun 11/18
BWI - OPO • 2 stops
Cheapest one-way
$305
Typical prices: $432-$604
Multiple Airlines
Tue 10/30
IAD - OPO • 3 stops
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. and Porto. You'll need to take a connecting flight to reach the destination.
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Top routes
IAD - OPO
Cheapest • 7% average savings
DCA - OPO
Most popular
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When to book
25 weeks
in advance
Our data shows that travelers who book at least 25 weeks in advance save around 26% compared to booking last minute.
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When to travel
January
Cheapest • 28% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Brussels Bruxelles-National (BRU)
Cheapest • Avg $535 (round-trip)
Montreal Pierre Elliott Trudeau Intl (YUL)
Shortest trip • 10h 45m (one-way)
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Flight Deals

Cheap Flights from Washington, D.C. to Porto (WAS-OPO)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Porto

Wed, Nov 11 - Wed, Nov 18
United Airlines Logo
10:09 am - 9:30 amBWI  Baltimore/Washington-OPO Porto
18h 21m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
12:35 pm - 2:06 pmOPO  Porto-BWI Baltimore/Washington
30h 31m2 stops Newark Chicago O'Hare Intl
$570United Airlines
Tue, Nov 17 - Tue, Nov 24
United Airlines Logo
6:10 am - 9:30 amBWI  Baltimore/Washington-OPO Porto
22h 20m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
12:35 pm - 10:29 amOPO  Porto-BWI Baltimore/Washington
26h 54m2 stops Newark Chicago O'Hare Intl
$570United Airlines
Wed, Oct 28 - Thu, Nov 12
Delta Logo
12:37 pm - 7:15 amBWI  Baltimore/Washington-OPO Porto
14h 38m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl
Delta Logo
5:55 am - 4:49 pmOPO  Porto-BWI Baltimore/Washington
15h 54m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County
$584Delta
Wed, Oct 28 - Wed, Nov 11
Delta Logo
9:50 am - 7:15 amBWI  Baltimore/Washington-OPO Porto
17h 25m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl
Delta Logo
5:00 am - 4:49 pmOPO  Porto-BWI Baltimore/Washington
16h 49m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
$584Delta
Wed, Oct 14 - Tue, Oct 20
SWISS Logo
8:20 pm - 6:30 pmIAD  Washington, D.C. Dulles Intl-OPO Porto
17h 10m1 stop Zurich
SWISS Logo
8:40 am - 4:45 pmOPO  Porto-IAD Washington, D.C. Dulles Intl
13h 05m1 stop Zurich
$623SWISS
Wed, Oct 14 - Tue, Oct 20
Multiple Airlines Logo
6:00 am - 7:20 pmDCA  Washington, D.C. Reagan-National-OPO Porto
32h 20m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Madrid Barajas
Multiple Airlines Logo
10:00 pm - 10:34 pmOPO  Porto-DCA Washington, D.C. Reagan-National
29h 34m3 stops Barcelona-El Prat Madrid Barajas Toronto Pearson Intl
$630Multiple Airlines
Thu, Oct 29 - Wed, Nov 11
KLM Logo
7:40 pm - 10:35 amIAD  Washington, D.C. Dulles Intl-OPO Porto
10h 55m1 stop Paris Charles de Gaulle
KLM Logo
5:55 am - 7:20 pmOPO  Porto-IAD Washington, D.C. Dulles Intl
18h 25m1 stop Paris Charles de Gaulle
$635KLM
Thu, Oct 29 - Wed, Nov 11
KLM Logo
7:40 pm - 10:35 amIAD  Washington, D.C. Dulles Intl-OPO Porto
10h 55m1 stop Paris Charles de Gaulle
KLM Logo
5:00 am - 4:26 pmOPO  Porto-IAD Washington, D.C. Dulles Intl
16h 26m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
$644KLM
Fri, Feb 26 - Wed, Mar 3
Air France Logo
1:00 pm - 10:35 amIAD  Washington, D.C. Dulles Intl-OPO Porto
16h 35m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle
Air France Logo
5:55 am - 12:20 amOPO  Porto-IAD Washington, D.C. Dulles Intl
23h 25m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson
$654Air France
Sun, Jan 24 - Sun, Feb 7
Air France Logo
1:00 pm - 10:35 amIAD  Washington, D.C. Dulles Intl-OPO Porto
16h 35m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle
Air France Logo
11:30 am - 11:02 pmOPO  Porto-IAD Washington, D.C. Dulles Intl
16h 32m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County
$655Air France
Booking Insights

Price, demand and travel trends for Washington, D.C. to Porto flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Washington, D.C. to Porto with more confidence.

How much is a round-trip flight from Washington, D.C. to Porto?

Round-trip flights from Washington, D.C. to Porto start at $570. Prices are below average for this route right now, with typical round-trip fares ranging from $663 to $1,030. The lowest price found in the past 5 days was $570 on United Airlines.

What is the cheapest Washington, D.C. to Porto flight route?

Washington, D.C. Dulles Intl Airport (IAD) to Porto (OPO) is the cheapest Washington, D.C. to Porto route, averaging $811 round-trip. Other Washington, D.C. to Porto routes average $928, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Washington, D.C. to Porto?

Wednesday is the cheapest day of the week to fly from Washington, D.C. to Porto, it is 15% cheaper than the average day. Friday is the most expensive day with flight prices 10% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Washington, D.C. to Porto?

•January is the cheapest month to fly from Washington, D.C. to Porto at $597 round-trip.
•June ($1,065) and July ($976) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 78% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Washington, D.C. to Porto the cheapest?

Flights from Washington, D.C. to Porto are cheapest 25 weeks before departure. Booking in this window typically costs about 26% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Washington, D.C. to Porto flights

Low season

January

Cheapest flight

$305
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from Washington, D.C. Dulles Intl Airport to Porto

When to book flights from Washington, D.C. to Porto

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. to Porto flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which other nearby cities are served by Porto Airport (OPO)?

    Porto Airport (OPO) is the main international airport serving the city of Porto. You can explore several nearby cities within an hour's drive from OPO. The nearby cities are Braga, Guimaraes, and Aveiro. You can get to these cities using either buses, taxis, or car rentals from the airport (OPO). Car rentals, however, provide a more flexible means of transport from the airport to these cities.

  • Which airlines offer family services on trips between Washington and Porto?

    United Airlines, TAP Air Portugal, American Airlines, and Delta Airlines are family-friendly due to their spacious seating options, including extra legroom and seating arrangements designed for families. Furthermore, they feature kid-friendly menus, including meals and snacks, and in-flight entertainment to keep the kids engaged until their arrival in Porto.

  • Which eco-friendly practices do airlines use when flying from Washington and Porto?

    The average carbon emission per passenger on the Washington to Porto route is approximately 6865 lb. However, you can fly sustainably with TAP Air Portugal. The airline operates flights that produce 43% less carbon dioxide per passenger on this route. TAP Air Portugal is committed to blending SAFs into their jet fuel supply, which helps to significantly reduce greenhouse gas emissions associated with their flights. They have also implemented recycling programs on board their flights, encouraging passengers to separate and dispose of recyclable waste appropriately.

  • Can I rent a car at Porto Airport (OPO)?

    Yes, you can rent a car at OPO. OPO has a variety of car rental providers onsite, including Avis, Budget, Europcar, Hertz, Sixt, and Thrifty. Upon arrival at the airport, you will find the car rental providers' desks conveniently located in the arrivals area. These providers offer a wide selection of vehicles, including economy cars, sedans, and SUVs.

  • Which airports can I use when flying from Washington, D.C. to Porto?

    Flights from Washington, D.C. to Porto may depart from several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Flights usually arrive at Porto (OPO).

  • What cabin classes can I book on flights from Washington, D.C. to Porto?

    Three cabin classes are available on flights from Washington, D.C. to Porto:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Washington, D.C. to Porto pass through?

    One-stop flights from Washington, D.C. to Porto most commonly connect through:

    • Lisbon Humberto Delgado (LIS) - 74% of one-stop connections
    • Newark (EWR) - 8% of one-stop connections
    • Frankfurt am Main (FRA) - 5% of one-stop connections
    • Madrid Barajas (MAD) - 3% of one-stop connections

    Lisbon Humberto Delgado (LIS) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Washington, D.C. to Porto?

    Yes. Being flexible with your travel dates can save you up to 23% on the Washington, D.C. to Porto route. Wednesday is the cheapest departure day at $708 round-trip on average, while Friday is the most expensive at $911, a difference of $203. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Porto?

    Some of the most popular sights in Porto are Ribeira Square, Mercado do Bolhão and Avenida dos Aliados. These are among the most viewed places in Porto on KAYAK.

  • How expensive are last-minute Washington, D.C. to Porto flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 13% above the route average of $827. Book 25 weeks before departure for the lowest fares.

  • How long is a flight from Washington, D.C. to Porto?

    A nonstop flight from Washington, D.C. to Porto takes 0h 00m, covering 3,518 miles.

  • Do I need a passport to fly from Washington, D.C. to Porto?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Washington, D.C. to Porto looking right now?

    One-way fares from Washington, D.C. to Porto are currently lower than usual. Average one-way flight prices are about $397, which is 23% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Washington, D.C. to Porto?

    Flying via Montreal Pierre Elliott Trudeau Intl (YUL) gives the shortest average 1-stop total travel time at 10h 45m, compared with 11h 16m via Newark (EWR) and 11h 25m via New York John F Kennedy Intl (JFK).

  • What is the time difference between Washington, D.C. and Porto?

    Porto is 5 hours ahead of Washington, D.C. (Western European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Porto Airport (OPO)?

    Porto Airport (OPO) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include:
    • Klass Wagen
    • Drive on Holiday
    • GREEN MOTION
    • Goldcar Rental SP
    • SURPRICE CAR RENTAL

  • How much should I expect to pay for a Washington, D.C. to Porto flight?

    Round-trip flights from Washington, D.C. to Porto range from $663 to $1,030, with an average of $827 over the past 12 months. Anything below $663 counts as a good deal.

Your guide to booking Washington, D.C. to Porto flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Friday. On this route, Wednesday flights average $708 - about $203 less than Friday (22% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 25 weeks before you fly. On this route, that window historically saves about 26% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. to Porto trip for January. Fares historically average $597 round-trip in that month - typically $468 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Porto Airport.
    - Opo Hotel Porto Aeroporto
  • Dulles International Airport (IAD) is the hub for United Airlines, and if you are traveling with this airline from Washington, D.C., to Porto, you will depart from Terminal D. United Airlines operates most international flights from Terminal D while operating domestic flights from Terminal C.
  • Parents of Unaccompanied Minors flying from Washington (DCA) to Porto should consider booking them on American Airlines. Unaccompanied Minors between the ages of 5 and 14 years old are accepted by American Airlines at DCA. The minors receive a wristband at check-in with their flight information, and a customer service representative monitors them while accompanying them to the gate.
  • If you intend to take the Metro subway to the airport, you can get to either Reagan-National (DCA), which is connected to the Metro's Blue and Yellow Lines, or Dulles International (IAD), which is connected to the Metro's Silver Line.
  • If you’d like to upgrade your TAP Air Portugal Economy seat when flying from Washington to Porto, consider upgrading your Economy ticket to either EconomyXtra or Executive Cabin for a fee. EconomyXtra and Executive cabins provide passengers with additional legroom, wider seats, an additional baggage allowance, and enhanced in-flight services.
  • When departing from IAD, at least one VIP lounge is in each concourse. Concourse A has Air France-KLM, Etihad, and Virgin Atlantic lounges. Concourse B houses the British Airways lounge, the Lufthansa lounge, and Turkish Airlines amenities. In Concourse C, there are three United Club lounges, one United Polaris lounge, and one United Club lounge in Concourse D.

More options for your flight from Washington, D.C. to Porto

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