OPO

$231 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 10/12. 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

Sun, Sep 27 - Mon, Oct 12
Multiple Airlines Logo
3:40 pm - 9:20 pm
SEA
-
OPO
21h 40m
2 stops
Multiple Airlines Logo
9:15 pm - 8:40 pm
OPO
-
SEA
31h 25m
3 stops
$606Multiple Airlines
Sun, Sep 27 - Mon, Oct 12
Multiple Airlines Logo
3:40 pm - 12:40 am
SEA
-
OPO
25h 00m
3 stops
Multiple Airlines Logo
10:30 pm - 8:40 pm
OPO
-
SEA
30h 10m
3 stops
$648Multiple Airlines
Sun, Sep 20 - Mon, Sep 28
Multiple Airlines Logo
3:40 pm - 9:55 pm
SEA
-
OPO
22h 15m
2 stops
Multiple Airlines Logo
10:30 pm - 8:40 pm
OPO
-
SEA
30h 10m
3 stops
$687Multiple Airlines
Sun, Sep 20 - Mon, Sep 28
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
$704Multiple Airlines
Sun, Nov 15 - Thu, Dec 10
Multiple Airlines Logo
10:00 am - 9:30 am
PDX
-
OPO
15h 30m
1 stop
Multiple Airlines Logo
6:00 am - 8:46 pm
OPO
-
PDX
22h 46m
2 stops
$731Multiple Airlines
Sun, Nov 15 - Thu, Dec 10
Delta Logo
7:00 am - 9:05 am
PDX
-
OPO
18h 05m
1 stop
Delta Logo
11:15 am - 11:20 am
OPO
-
PDX
32h 05m
1 stop
$733Delta
Mon, Nov 16 - Thu, Dec 10
Delta Logo
1:20 pm - 10:30 pm
PDX
-
OPO
25h 10m
1 stop
Delta Logo
11:15 am - 11:20 am
OPO
-
PDX
32h 05m
1 stop
$736Delta
Sun, Nov 15 - Fri, Dec 11
United Airlines Logo
5:00 am - 9:30 am
PDX
-
OPO
20h 30m
2 stops
United Airlines Logo
12:35 pm - 12:54 am
OPO
-
PDX
20h 19m
2 stops
$745United Airlines
Sun, Nov 1 - Wed, Nov 18
Iberia Logo
6:12 am - 11:45 am
SEA
-
OPO
21h 33m
2 stops
Iberia Logo
8:40 pm - 9:45 am
OPO
-
SEA
21h 05m
2 stops
$763Iberia
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
$772Iberia
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$231
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 30% 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.

Everything you need to know for your flight to Porto

Information on the airport you'll fly into in Porto

Porto (OPO)