What airlines fly to Seattle?

British Airways, Delta and Virgin Atlantic are the top three most popular airlines that fly to Seattle from Southampton according to our data. British Airways is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 5 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Southampton Eastleigh to Seattle/Tacoma Intl?

British Airways is the most popular carrier operating from Southampton Eastleigh to Seattle/Tacoma Intl

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.

$737 Cheap Flights from Southampton to Seattle in 2025/26

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Find the cheapest flights from Southampton to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

5:30 pm - 11:35 amSOU-SEA

26h 05m1 stop

7:20 am - 8:10 amSEA-SOU

41h 50m2 stops

$737Delta

Find Deal

Wed, Mar 4 - Sun, Mar 8

8:40 am - 11:35 amSOU-SEA

34h 55m1 stop

11:05 pm - 5:00 pmSEA-SOU

34h 55m2 stops

$738Delta

Find Deal

Wed, Mar 4 - Sun, Mar 8

9:20 am - 4:05 pmSOU-SEA

14h 45m1 stop

7:50 am - 8:45 amSEA-SOU

16h 55m2 stops

$742Delta

Find Deal

Wed, Oct 1 - Sun, Oct 5

8:40 am - 10:16 pmSOU-SEA

21h 36m2 stops

10:00 pm - 5:00 pmSEA-SOU

36h 00m2 stops

$744Virgin Atlantic

Find Deal

Wed, Mar 4 - Sun, Mar 8

9:20 am - 10:06 pmSOU-SEA

20h 46m2 stops

6:00 am - 8:45 amSEA-SOU

18h 45m2 stops

$748Delta

Find Deal

Wed, Oct 1 - Sun, Oct 5

8:40 am - 11:35 amSOU-SEA

34h 55m1 stop

4:00 pm - 8:10 amSEA-SOU

33h 10m1 stop

$793KLM

Find Deal

Wed, Mar 4 - Sun, Mar 8

9:10 am - 8:09 pmSOU-SEA

18h 59m2 stops

1:30 pm - 3:15 pmSEA-SOU

17h 45m2 stops

$988Multiple Airlines

Find Deal

Wed, Oct 1 - Sun, Oct 5

8:00 pm - 5:50 pmSOU-SEA

29h 50m1 stop

7:35 pm - 8:15 amSEA-SOU

28h 40m1 stop

$989British Airways

Find Deal

Wed, Oct 1 - Sun, Oct 5

7:50 pm - 8:40 pmSOU-SEA

32h 50m3 stops

7:00 pm - 7:30 amSEA-SOU

28h 30m3 stops

$1,159Multiple Airlines

Find Deal

Wed, Oct 1 - Sun, Oct 5

7:55 pm - 5:55 pmSOU-SEA

29h 00m2 stops

1:35 pm - 1:10 pmSEA-SOU

15h 35m2 stops

$1,260British Airways

Find Deal

Thu, Oct 30 - Sat, Nov 8

British Airways flights from Southampton to Seattle

Our best British Airways deals on Southampton to Seattle flight tickets

British Airways

Oct 1

SOU8:00 pmSouthampton Eastleigh

29h 50m

1 stop

SEA5:50 pmSeattle/Tacoma Intl

Oct 5

SEA7:35 pmSeattle/Tacoma Intl

28h 40m

1 stop

SOU8:15 amSouthampton Eastleigh

$989

Find similar

British Airways

Sep 27

SOU9:40 amSouthampton Eastleigh

16h 10m

1 stop

SEA5:50 pmSeattle/Tacoma Intl

Nov 24

SEA8:05 pmSeattle/Tacoma Intl

15h 35m

1 stop

SOU7:40 pmSouthampton Eastleigh

$1,088

Find similar

British Airways

Sep 26

SOU8:00 pmSouthampton Eastleigh

29h 50m

1 stop

SEA5:50 pmSeattle/Tacoma Intl

Nov 24

SEA8:05 pmSeattle/Tacoma Intl

15h 35m

1 stop

SOU7:40 pmSouthampton Eastleigh

$1,099

Find similar

Delta flights from Southampton to Seattle

Our best Delta deals on Southampton to Seattle flight tickets

Delta

Mar 4

SOU5:30 pmSouthampton Eastleigh

26h 05m

1 stop

SEA11:35 amSeattle/Tacoma Intl

Mar 8

SEA7:20 amSeattle/Tacoma Intl

41h 50m

2 stops

SOU8:10 amSouthampton Eastleigh

$737

Find similar

Delta

Mar 4

SOU8:40 amSouthampton Eastleigh

34h 55m

1 stop

SEA11:35 amSeattle/Tacoma Intl

Mar 8

SEA11:05 pmSeattle/Tacoma Intl

34h 55m

2 stops

SOU5:00 pmSouthampton Eastleigh

$738

Find similar

Delta

Oct 1

SOU9:20 amSouthampton Eastleigh

14h 45m

1 stop

SEA4:05 pmSeattle/Tacoma Intl

Oct 5

SEA7:50 amSeattle/Tacoma Intl

16h 55m

2 stops

SOU8:45 amSouthampton Eastleigh

$742

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 3/4

5:30 pm-11:35 am

1 stop26h 05m

Seattle/Tacoma Intl

Sun 3/8

7:20 am-8:10 am

2 stops41h 50m

$737

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 3/4

8:40 am-11:35 am

1 stop34h 55m

Seattle/Tacoma Intl

Sun 3/8

11:05 pm-5:00 pm

2 stops34h 55m

$738

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 10/1

9:20 am-4:05 pm

1 stop14h 45m

Seattle/Tacoma Intl

Sun 10/5

7:50 am-8:45 am

2 stops16h 55m

$742

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 3/4

8:40 am-10:16 pm

2 stops21h 36m

Seattle/Tacoma Intl

Sun 3/8

10:00 pm-5:00 pm

2 stops36h 00m

$744

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 10/1

9:20 am-10:06 pm

2 stops20h 46m

Seattle/Tacoma Intl

Sun 10/5

6:00 am-8:45 am

2 stops18h 45m

$748

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 3/4

8:40 am-11:35 am

1 stop34h 55m

Seattle/Tacoma Intl

Sun 3/8

4:00 pm-8:10 am

1 stop33h 10m

$793

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 10/1

9:10 am-8:09 pm

2 stops18h 59m

Seattle/Tacoma Intl

Sun 10/5

1:30 pm-3:15 pm

2 stops17h 45m

$988

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 10/1

8:00 pm-5:50 pm

1 stop29h 50m

Seattle/Tacoma Intl

Sun 10/5

7:35 pm-8:15 am

1 stop28h 40m

$989

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 10/1

7:50 pm-8:40 pm

3 stops32h 50m

Seattle/Tacoma Intl

Sun 10/5

7:00 pm-7:30 am

3 stops28h 30m

$1,159

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 10/30

7:55 pm-5:55 pm

2 stops29h 00m

Seattle/Tacoma Intl

Sat 11/8

1:35 pm-1:10 pm

2 stops15h 35m

$1,260

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

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

Prices

Airlines

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

On average, the least expensive day to fly to Seattle from Southampton is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $780. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Southampton because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,017.

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

Flying to Seattle from Southampton at noon is the least expensive time of day to depart. momondo users have found prices as low as $843 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $860. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 round-trip 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

Direct flights	None

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?
The straight-line distance from Southampton Eastleigh to Seattle/Tacoma Intl is 4779.5 mi. Flights usually cover this in 14h 45m, depending on flying conditions and air traffic around both airports.
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.

Leavenworth

Tacoma

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Puyallup

Federal Way

Kirkland

Tukwila

Shoreline

Lakewood

Centralia

Fife

Cle Elum

Redmond

Westport

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Southampton to Seattle for you.

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

Yes. momondo allows you to filter the results for Southampton to Seattle flights to just show those with flexible booking policies.

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

Once you have performed a search for Southampton to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Seattle from Southampton. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.