SEA

£515 Find Cheap Flights from Portsmouth to Seattle

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 28/10. 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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Everything you should know

Cheapest return fare
£732
Aer Lingus
Wed 17/6Wed 24/6
SOU - SEA • 1 stop
Cheapest one-way flight
£515
British Airways
Wed 28/10
SOU - SEA • 1 stop
Direct flights
Every day
You can fly direct with ANA, Aer Lingus, and others. Average duration is 0
Direct flights
Direct flights
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Direct flights
Direct flights
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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

Wed, 17 Jun - Wed, 24 Jun
Aer Lingus Logo
08:15 - 17:10
SOU
-
SEA
16h 55m
1 stop
Aer Lingus Logo
19:10 - 19:30
SEA
-
SOU
16h 20m
1 stop
£732Aer Lingus
Wed, 17 Jun - Wed, 24 Jun
Multiple Airlines Logo
18:25 - 17:10
SOU
-
SEA
30h 45m
2 stops
Multiple Airlines Logo
19:10 - 19:30
SEA
-
SOU
16h 20m
1 stop
£786Multiple Airlines
Thu, 25 Jun - Mon, 29 Jun
Aer Lingus Logo
20:00 - 17:10
SOU
-
SEA
29h 10m
1 stop
Aer Lingus Logo
19:10 - 16:50
SEA
-
SOU
13h 40m
1 stop
£830Aer Lingus
Thu, 25 Jun - Mon, 29 Jun
KLM Logo
09:05 - 16:24
SOU
-
SEA
15h 19m
1 stop
KLM Logo
14:30 - 16:50
SEA
-
SOU
18h 20m
2 stops
£839KLM
Thu, 2 Jul - Thu, 9 Jul
Delta Logo
09:05 - 23:08
SOU
-
SEA
22h 03m
2 stops
Delta Logo
17:40 - 17:35
SEA
-
SOU
15h 55m
1 stop
£859Delta
Tue, 1 Sep - Sat, 5 Sep
British Airways Logo
20:00 - 17:10
SOU
-
SEA
29h 10m
1 stop
British Airways Logo
19:10 - 08:40
SEA
-
SOU
29h 30m
1 stop
£885British Airways
Tue, 1 Sep - Sat, 5 Sep
British Airways Logo
20:00 - 17:10
SOU
-
SEA
29h 10m
1 stop
British Airways Logo
20:20 - 08:25
SEA
-
SOU
28h 05m
2 stops
£885British Airways
Wed, 17 Jun - Wed, 24 Jun
Multiple Airlines Logo
08:15 - 21:08
SOU
-
SEA
20h 53m
2 stops
Multiple Airlines Logo
19:10 - 20:45
SEA
-
SOU
17h 35m
2 stops
£897Multiple Airlines
Tue, 1 Sep - Sat, 5 Sep
British Airways Logo
14:25 - 17:10
SOU
-
SEA
34h 45m
2 stops
British Airways Logo
20:20 - 08:25
SEA
-
SOU
28h 05m
2 stops
£897British Airways
Mon, 20 Jul - Tue, 28 Jul
British Airways Logo
09:20 - 17:10
SOU
-
SEA
15h 50m
1 stop
British Airways Logo
19:10 - 16:50
SEA
-
SOU
13h 40m
1 stop
£900British Airways
Useful Info

Good to know - Cheap tickets from Portsmouth to Seattle

Low seasonJanuary
Cheapest flight£515
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (8% 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)