OPO

$258 Find Cheap Flights from Washington to Porto - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Porto departing on 8/31. 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.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Washington to Porto

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington to Porto

Sat, Sep 5 - Sat, Sep 12
Multiple Airlines Logo
8:00 am - 12:40 am
SEA
-
OPO
32h 40m
3 stops
Multiple Airlines Logo
7:10 pm - 6:32 pm
OPO
-
SEA
31h 22m
3 stops
$690Multiple Airlines
Wed, Aug 19 - Wed, Aug 26
Multiple Airlines Logo
7:00 pm - 12:40 am
SEA
-
OPO
21h 40m
3 stops
Multiple Airlines Logo
10:45 am - 8:40 pm
OPO
-
SEA
17h 55m
2 stops
$722Multiple Airlines
Tue, Dec 1 - Tue, Dec 15
United Airlines Logo
10:00 am - 9:30 am
PDX
-
OPO
15h 30m
1 stop
United Airlines Logo
6:00 am - 11:12 pm
OPO
-
PDX
25h 12m
2 stops
$741United Airlines
Thu, Sep 3 - Thu, Sep 10
Multiple Airlines Logo
3:40 pm - 10:00 am
SEA
-
OPO
34h 20m
3 stops
Multiple Airlines Logo
10:30 pm - 8:40 pm
OPO
-
SEA
30h 10m
3 stops
$741Multiple Airlines
Tue, Dec 1 - Tue, Dec 15
KLM Logo
10:05 pm - 9:05 am
PDX
-
OPO
27h 00m
1 stop
KLM Logo
9:55 am - 11:20 am
OPO
-
PDX
33h 25m
1 stop
$745KLM
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
8:00 am - 12:40 am
SEA
-
OPO
32h 40m
3 stops
Multiple Airlines Logo
8:55 pm - 10:42 pm
OPO
-
SEA
33h 47m
3 stops
$745Multiple Airlines
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
8:00 am - 12:40 am
SEA
-
OPO
32h 40m
3 stops
Multiple Airlines Logo
8:55 pm - 9:07 pm
OPO
-
SEA
32h 12m
2 stops
$746Multiple Airlines
Mon, Nov 9 - Mon, Nov 23
Iberia Logo
6:50 pm - 8:00 pm
SEA
-
OPO
17h 10m
2 stops
Iberia Logo
9:55 pm - 4:55 pm
OPO
-
SEA
27h 00m
2 stops
$771Iberia
Tue, Nov 3 - Tue, Nov 10
Iberia Logo
5:24 am - 7:40 am
SEA
-
OPO
18h 16m
2 stops
Iberia Logo
8:40 pm - 9:18 pm
OPO
-
SEA
32h 38m
2 stops
$775Iberia
Sat, Sep 26 - Fri, Oct 2
Scandinavian Airlines Logo
3:55 pm - 5:05 pm
SEA
-
OPO
17h 10m
1 stop
Scandinavian Airlines Logo
5:55 pm - 1:45 pm
OPO
-
SEA
27h 50m
1 stop
$779Scandinavian Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$258
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 32% increase in price.
Flight from Seattle to Porto

FAQs for booking flights from Washington to Porto

  • How does KAYAK find such low prices on flights from Washington to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Washington with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Lamego
Guimarães
Chaves
Pinhao
Viseu
Esposende
Espinho
Ponte de Lima
Arcos de Valdevez
Santa Maria da Feira
Baiao
Caminha
Mira
Penafiel
Amares
Curia

Everything you need to know for your flight to Porto

Information on the airport you'll fly into in Porto

Porto (OPO)