SEA

£510 Find Cheap Flights from Portsmouth to Seattle – 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 Portsmouth to Seattle departing on 28/12. 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

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest return fare
£688
Aer Lingus
Mon 17/8Mon 24/8
SOU - SEA • 1 stop
Cheapest one-way flight
£510
British Airways
Mon 28/12
SOU - SEA • 2 stops
Direct flights
Every day
You can fly direct with ANA, Aer Lingus, and others. Average duration is 0
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Portsmouth to Seattle

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Portsmouth to Seattle 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 return flight deals from Portsmouth to Seattle

Mon, 17 Aug - Mon, 24 Aug
Aer Lingus Logo
09:20 - 17:10
SOU
-
SEA
15h 50m
1 stop
Aer Lingus Logo
19:10 - 19:30
SEA
-
SOU
16h 20m
1 stop
£688Aer Lingus
Sat, 22 Aug - Thu, 27 Aug
Aer Lingus Logo
09:20 - 17:10
SOU
-
SEA
15h 50m
1 stop
Aer Lingus Logo
19:10 - 16:50
SEA
-
SOU
13h 40m
1 stop
£696Aer Lingus
Mon, 31 Aug - Thu, 10 Sep
Delta Logo
17:20 - 11:47
SOU
-
SEA
26h 27m
1 stop
Delta Logo
07:15 - 08:35
SEA
-
SOU
17h 20m
2 stops
£705Delta
Thu, 3 Sep - Thu, 10 Sep
Delta Logo
09:05 - 20:50
SOU
-
SEA
19h 45m
2 stops
Delta Logo
21:29 - 08:45
SEA
-
SOU
27h 16m
2 stops
£710Delta
Wed, 5 Aug - Wed, 12 Aug
Aer Lingus Logo
09:20 - 17:10
SOU
-
SEA
15h 50m
1 stop
Aer Lingus Logo
19:10 - 16:50
SEA
-
SOU
13h 40m
1 stop
£732Aer Lingus
Sat, 22 Aug - Thu, 27 Aug
Multiple Airlines Logo
09:15 - 20:30
SOU
-
SEA
19h 15m
2 stops
Multiple Airlines Logo
17:45 - 08:45
SEA
-
SOU
31h 00m
1 stop
£750Multiple Airlines
Sat, 22 Aug - Thu, 27 Aug
Multiple Airlines Logo
09:15 - 20:30
SOU
-
SEA
19h 15m
2 stops
Multiple Airlines Logo
09:35 - 08:45
SEA
-
SOU
15h 10m
2 stops
£753Multiple Airlines
Sat, 22 Aug - Thu, 27 Aug
Multiple Airlines Logo
09:15 - 20:30
SOU
-
SEA
19h 15m
2 stops
Multiple Airlines Logo
09:35 - 08:45
SEA
-
SOU
15h 10m
2 stops
£754Multiple Airlines
Sat, 22 Aug - Thu, 27 Aug
Multiple Airlines Logo
09:20 - 20:34
SOU
-
SEA
19h 14m
2 stops
Multiple Airlines Logo
19:10 - 19:30
SEA
-
SOU
16h 20m
1 stop
£756Multiple Airlines
Fri, 21 Aug - Thu, 3 Sep
British Airways Logo
09:20 - 17:10
SOU
-
SEA
15h 50m
1 stop
British Airways Logo
19:10 - 19:30
SEA
-
SOU
16h 20m
1 stop
£775British Airways
Useful Info

Good to know - Cheap tickets from Portsmouth to Seattle

Low seasonJanuary
Cheapest flight£510
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (5% more expensive on average)
Flight from Southampton to Seattle

When to book flights from Portsmouth to Seattle

Are your dates flexible? Find out the best times to travel from Portsmouth to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

FAQs for booking flights from Portsmouth to Seattle

  • How does KAYAK find such low prices on flights from Portsmouth to Seattle?

    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 Portsmouth to Seattle.

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

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

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

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

    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 Seattle from Portsmouth 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 Portsmouth to Seattle

Information on your arrival and departure airports

Seattle (SEA)