$355 Find Cheap Flights from Porto to Washington

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 5/5. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Washington

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Washington, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Washington, as well as popular online travel agencies
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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, May 21 - Tue, May 26
Scandinavian Airlines Logo
10:30 am - 1:45 pm
OPO
-
SEA
35h 15m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
OPO
33h 45m
1 stop
$772Scandinavian Airlines
Fri, May 15 - Sun, May 24
KLM Logo
5:00 am - 11:42 am
OPO
-
SEA
14h 42m
1 stop
KLM Logo
1:30 pm - 3:25 pm
SEA
-
OPO
17h 55m
1 stop
$956KLM
Mon, May 11 - Mon, May 18
Delta Logo
5:00 am - 11:42 am
OPO
-
SEA
14h 42m
1 stop
Delta Logo
6:40 pm - 10:00 pm
SEA
-
OPO
19h 20m
1 stop
$958Delta
Thu, May 21 - Mon, May 25
United Airlines Logo
6:00 am - 9:10 pm
OPO
-
SEA
23h 10m
2 stops
United Airlines Logo
7:40 am - 9:45 am
SEA
-
OPO
18h 05m
2 stops
$961United Airlines
Sun, May 10 - Sun, May 17
Multiple Airlines Logo
6:20 am - 4:59 pm
OPO
-
SEA
18h 39m
1 stop
Multiple Airlines Logo
10:45 am - 6:15 pm
SEA
-
OPO
23h 30m
2 stops
$962Multiple Airlines
Fri, May 15 - Sun, May 24
United Airlines Logo
6:00 am - 11:29 pm
OPO
-
SEA
25h 29m
3 stops
United Airlines Logo
2:10 pm - 3:40 pm
SEA
-
OPO
17h 30m
1 stop
$964United Airlines
Fri, May 15 - Sun, May 24
Delta Logo
5:00 am - 6:49 pm
OPO
-
SEA
21h 49m
2 stops
Delta Logo
6:40 pm - 10:00 pm
SEA
-
OPO
19h 20m
1 stop
$967Delta
Sun, May 10 - Sun, May 17
Delta Logo
5:00 am - 7:05 pm
OPO
-
SEA
22h 05m
2 stops
Delta Logo
10:35 am - 3:30 pm
SEA
-
OPO
20h 55m
2 stops
$972Delta
Thu, May 21 - Mon, May 25
United Airlines Logo
6:00 am - 9:10 pm
OPO
-
SEA
23h 10m
2 stops
United Airlines Logo
11:52 pm - 6:15 am
SEA
-
OPO
22h 23m
2 stops
$979United Airlines
Thu, May 21 - Mon, May 25
United Airlines Logo
6:00 am - 8:53 pm
OPO
-
SEA
22h 53m
2 stops
United Airlines Logo
11:52 pm - 6:15 am
SEA
-
OPO
22h 23m
2 stops
$981United Airlines
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 May.
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Good to know

Low seasonMay
Cheapest flight$355
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 4% 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)