$499 Find Cheap Flights from Porto to Washington - 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 from Porto to Washington departing on 10/8. 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

Book Cheap Porto to Washington Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Porto to Washington 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 Porto to Washington

Thu, Sep 10 - Mon, Sep 21
Multiple Airlines Logo
6:40 am - 8:40 pmOPO  Porto-SEA Seattle/Tacoma Intl
22h 00m2 stops London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
7:00 pm - 11:20 pmSEA  Seattle/Tacoma Intl-OPO Porto
20h 20m2 stops Reykjavik Keflavik Intl London Gatwick
$917Multiple Airlines
Wed, Oct 21 - Wed, Nov 4
Turkish Airlines Logo
4:40 pm - 10:56 pmOPO  Porto-SEA Seattle/Tacoma Intl
38h 16m2 stops Istanbul Chicago O'Hare Intl
Turkish Airlines Logo
10:50 am - 3:25 pmSEA  Seattle/Tacoma Intl-OPO Porto
44h 35m2 stops Chicago O'Hare Intl Istanbul
$921Turkish Airlines
Sun, Sep 20 - Sun, Sep 27
Multiple Airlines Logo
4:20 pm - 11:47 amOPO  Porto-SEA Seattle/Tacoma Intl
27h 27m1 stop Amsterdam Schiphol
Multiple Airlines Logo
6:45 pm - 10:00 pmSEA  Seattle/Tacoma Intl-OPO Porto
19h 15m1 stop Paris Charles de Gaulle
$932Multiple Airlines
Thu, Sep 10 - Mon, Sep 21
Multiple Airlines Logo
6:40 am - 8:40 pmOPO  Porto-SEA Seattle/Tacoma Intl
22h 00m2 stops London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
3:40 pm - 6:50 amSEA  Seattle/Tacoma Intl-OPO Porto
31h 10m3 stops Reykjavik Keflavik Intl London Gatwick Madrid Barajas
$941Multiple Airlines
Wed, Oct 21 - Wed, Nov 4
Turkish Airlines Logo
10:45 am - 5:20 pmOPO  Porto-SEA Seattle/Tacoma Intl
38h 35m1 stop Istanbul
Turkish Airlines Logo
10:50 am - 3:25 pmSEA  Seattle/Tacoma Intl-OPO Porto
44h 35m2 stops Chicago O'Hare Intl Istanbul
$961Turkish Airlines
Thu, Sep 10 - Mon, Sep 21
Delta Logo
5:00 am - 11:47 amOPO  Porto-SEA Seattle/Tacoma Intl
14h 47m1 stop Amsterdam Schiphol
Delta Logo
6:45 pm - 10:00 pmSEA  Seattle/Tacoma Intl-OPO Porto
19h 15m1 stop Paris Charles de Gaulle
$962Delta
Wed, Oct 21 - Wed, Nov 4
Delta Logo
5:00 am - 4:35 pmOPO  Porto-SEA Seattle/Tacoma Intl
19h 35m1 stop Amsterdam Schiphol
Delta Logo
3:25 pm - 10:00 pmSEA  Seattle/Tacoma Intl-OPO Porto
22h 35m1 stop Paris Charles de Gaulle
$963Delta
Tue, Sep 1 - Tue, Sep 8
Multiple Airlines Logo
10:00 pm - 8:40 pmOPO  Porto-SEA Seattle/Tacoma Intl
30h 40m3 stops Barcelona-El Prat London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
3:40 pm - 11:40 pmSEA  Seattle/Tacoma Intl-OPO Porto
24h 00m2 stops Reykjavik Keflavik Intl London Gatwick
$965Multiple Airlines
Tue, Sep 8 - Mon, Sep 14
Delta Logo
5:00 am - 6:36 pmOPO  Porto-SEA Seattle/Tacoma Intl
21h 36m2 stops Amsterdam Schiphol Salt Lake City
Delta Logo
6:45 pm - 10:30 pmSEA  Seattle/Tacoma Intl-OPO Porto
19h 45m1 stop Paris Charles de Gaulle
$967Delta
Tue, Sep 1 - Tue, Sep 8
Delta Logo
6:15 am - 5:43 pmOPO  Porto-SEA Seattle/Tacoma Intl
19h 28m1 stop Paris Charles de Gaulle
Delta Logo
6:45 pm - 10:05 pmSEA  Seattle/Tacoma Intl-OPO Porto
19h 20m1 stop Paris Charles de Gaulle
$968Delta
Booking Insights

KAYAK's insights & trends for Porto to Washington flights

Get data-powered insights and trends into flights from Porto to Washington to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Porto to State of Washington?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Porto to State of Washington departing in September.

Flight prices are below average for this route right now.

Flights to State of Washington from Porto usually cost between $932 and $1,319 in September.
The lowest price found in the past 5 days was $917 on Multiple Airlines (Sep 10-Sep 21).

What is the cheapest month to fly from Porto to Washington?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Porto to Washington, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Porto to Washington is February, when tickets cost $0 (return) on average. On the other hand, the most expensive months are July and March, when the average cost of round-trip tickets is $4,846 and $1,987 respectively.

Find deals

Good to know

Low season

May

Cheapest flight

$499
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly and prices are also 32% lower on average.
Flight from Porto to Seattle

FAQs - booking Washington flights

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

    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 Porto to Washington.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Porto to 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 Porto to Washington?

    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 from Porto to Washington with an airline and back with another airline.

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

    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 from Porto to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Porto to Washington

Information on your arrival and departure airports

Porto (OPO)