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Cheap flights from Southampton to Seattle from £375

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Southampton to Seattle departing on 30/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Southampton to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
12:25 - 18:20
SOU
-
SEA
13h 55m1 stop
British Airways Logo
21:05 - 19:40
SEA
-
SOU
15h 35m1 stop
£527British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
12:25 - 18:20
SOU
-
SEA
13h 55m1 stop
British Airways Logo
19:50 - 08:25
SEA
-
SOU
29h 35m2 stops
£548British Airways
Wed, 4 Mar - Sun, 8 Mar
Virgin Atlantic Logo
09:25 - 22:25
SOU
-
SEA
21h 00m2 stops
Virgin Atlantic Logo
21:59 - 17:05
SEA
-
SOU
35h 06m2 stops
£557Virgin Atlantic
Sat, 31 Jan - Sat, 7 Feb
Virgin Atlantic Logo
09:00 - 11:50
SOU
-
SEA
34h 50m1 stop
Virgin Atlantic Logo
21:55 - 08:45
SEA
-
SOU
26h 50m2 stops
£573Virgin Atlantic
Thu, 29 Jan - Thu, 5 Feb
Virgin Atlantic Logo
09:00 - 20:46
SOU
-
SEA
43h 46m2 stops
Virgin Atlantic Logo
06:05 - 08:25
SEA
-
SOU
18h 20m2 stops
£576Virgin Atlantic
Thu, 29 Jan - Thu, 5 Feb
Delta Logo
09:25 - 21:49
SOU
-
SEA
20h 24m2 stops
Delta Logo
15:05 - 17:15
SEA
-
SOU
18h 10m1 stop
£582Delta
Sat, 31 Jan - Sat, 7 Feb
Delta Logo
17:35 - 11:50
SOU
-
SEA
26h 15m1 stop
Delta Logo
07:10 - 08:45
SEA
-
SOU
17h 35m2 stops
£584Delta
Fri, 30 Jan - Fri, 6 Feb
British Airways Logo
08:55 - 16:55
SOU
-
SEA
16h 00m2 stops
British Airways Logo
19:50 - 08:25
SEA
-
SOU
29h 35m2 stops
£588British Airways
Wed, 4 Mar - Sun, 8 Mar
Delta Logo
09:00 - 22:25
SOU
-
SEA
21h 25m2 stops
Delta Logo
07:10 - 08:45
SEA
-
SOU
17h 35m2 stops
£588Delta
Fri, 30 Jan - Fri, 6 Feb
Delta Logo
17:35 - 11:50
SOU
-
SEA
26h 15m1 stop
Delta Logo
15:10 - 17:05
SEA
-
SOU
17h 55m1 stop
£592Delta
Wed, 14 Jan - Wed, 21 Jan

British Airways flights from Southampton to Seattle

Our best British Airways deals on Southampton to Seattle flight tickets
British Airways
4 Mar
SOU12:25Southampton Eastleigh
13h 55m
1 stop
SEA18:20Seattle/Tacoma Intl
8 Mar
SEA21:05Seattle/Tacoma Intl
15h 35m
1 stop
SOU19:40Southampton Eastleigh
£526
Find similar
British Airways
4 Mar
SOU12:25Southampton Eastleigh
13h 55m
1 stop
SEA18:20Seattle/Tacoma Intl
8 Mar
SEA21:05Seattle/Tacoma Intl
15h 35m
1 stop
SOU19:40Southampton Eastleigh
£527
Find similar
British Airways
4 Mar
SOU12:25Southampton Eastleigh
13h 55m
1 stop
SEA18:20Seattle/Tacoma Intl
8 Mar
SEA19:50Seattle/Tacoma Intl
29h 35m
2 stops
SOU08:25Southampton Eastleigh
£547
Find similar

Delta flights from Southampton to Seattle

Our best Delta deals on Southampton to Seattle flight tickets
Delta
31 Jan
SOU09:25Southampton Eastleigh
20h 24m
2 stops
SEA21:49Seattle/Tacoma Intl
7 Feb
SEA15:05Seattle/Tacoma Intl
18h 10m
1 stop
SOU17:15Southampton Eastleigh
£582
Find similar
Delta
30 Jan
SOU17:35Southampton Eastleigh
26h 15m
1 stop
SEA11:50Seattle/Tacoma Intl
6 Feb
SEA07:10Seattle/Tacoma Intl
17h 35m
2 stops
SOU08:45Southampton Eastleigh
£584
Find similar
Delta
30 Jan
SOU09:00Southampton Eastleigh
21h 25m
2 stops
SEA22:25Seattle/Tacoma Intl
6 Feb
SEA07:10Seattle/Tacoma Intl
17h 35m
2 stops
SOU08:45Southampton Eastleigh
£588
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Southampton to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 18 December 2025.
Use the filters below to find and compare flights from Southampton to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 4/3

12:25-18:20

1 stop13h 55m

Seattle/Tacoma Intl

Sun 8/3

21:05-19:40

1 stop15h 35m

£527

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 4/3

12:25-18:20

1 stop13h 55m

Seattle/Tacoma Intl

Sun 8/3

19:50-08:25

2 stops29h 35m

£548

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Sat 31/1

09:25-22:25

2 stops21h 00m

Seattle/Tacoma Intl

Sat 7/2

21:59-17:05

2 stops35h 06m

£557

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 29/1

09:00-11:50

1 stop34h 50m

Seattle/Tacoma Intl

Thu 5/2

21:55-08:45

2 stops26h 50m

£573

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 29/1

09:00-20:46

2 stops43h 46m

Seattle/Tacoma Intl

Thu 5/2

06:05-08:25

2 stops18h 20m

£576

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Sat 31/1

09:25-21:49

2 stops20h 24m

Seattle/Tacoma Intl

Sat 7/2

15:05-17:15

1 stop18h 10m

£582

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Fri 30/1

17:35-11:50

1 stop26h 15m

Seattle/Tacoma Intl

Fri 6/2

07:10-08:45

2 stops17h 35m

£584

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 4/3

08:55-16:55

2 stops16h 00m

Seattle/Tacoma Intl

Sun 8/3

19:50-08:25

2 stops29h 35m

£588

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Fri 30/1

09:00-22:25

2 stops21h 25m

Seattle/Tacoma Intl

Fri 6/2

07:10-08:45

2 stops17h 35m

£588

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 14/1

17:35-11:50

1 stop26h 15m

Seattle/Tacoma Intl

Wed 21/1

15:10-17:05

1 stop17h 55m

£592

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

How to get the cheapest flight ticket from Southampton to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Seattle?

According to our data, Wednesday is the cheapest day to fly to Seattle from Southampton. The lowest ticket price found for a Wednesday departure recently was £589. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Sunday is £661.

What is the cheapest time of day to depart on your flight to Seattle?

According to our data, the cheapest time of day to fly to Seattle is in the evening. momondo users have found flights departing from Southampton to Seattle in the evening for as low as £528. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive, with an average ticket price of £621.

When to book flights from Southampton to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Southampton to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Southampton to Seattle (SOU to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Southampton to Seattle

Fastest flight time

13h 55m

Direct flights

None
The fastest flight from Southampton to Seattle takes 13h 55m
There are no direct flights from Southampton to Seattle. There are no popular flight routes from Southampton to Seattle.
Search flight deals

  • How far is Southampton Eastleigh to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 4779.5 mi away from Southampton Eastleigh. By plane, this route typically takes 13h 55m.

  • When did momondo last update prices for flights from Southampton Eastleigh Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Southampton Eastleigh Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Southampton Eastleigh Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Southampton Eastleigh Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Fife
Renton
SeaTac
Tukwila

Why use momondo?

Why should I use momondo to find a flight deal from Southampton to Seattle?

Finding the right flight to Seattle from Southampton is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Can I find flights from Southampton to Seattle with flexible booking policies on momondo?

All flight searches from Southampton to Seattle on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Southampton to Seattle?

Once all potential Southampton to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Southampton to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from Southampton are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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