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

British Airways and Delta are the most popular carriers operating from Southampton Eastleigh to Seattle/Tacoma Intl

What airlines fly to Seattle?

British Airways, Virgin Atlantic and Delta 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 36% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 7 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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.

$684 Cheap Flights from Southampton to Seattle in 2026

Find the cheapest flights from Southampton to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:05 am - 4:35 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

15h 30m1 stop Amsterdam Schiphol

5:45 pm - 4:50 pmSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

15h 05m1 stop Amsterdam Schiphol

$875KLM

Tue, Sep 15 - Tue, Sep 22

5:20 pm - 11:47 amSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

26h 27m1 stop Amsterdam Schiphol

1:50 pm - 4:50 pmSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

19h 00m1 stop Amsterdam Schiphol

$880KLM

Tue, Sep 15 - Tue, Sep 22

9:05 am - 8:21 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

19h 16m2 stops Amsterdam Schiphol New York John F Kennedy Intl

1:50 pm - 4:50 pmSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

19h 00m1 stop Amsterdam Schiphol

$891KLM

Tue, Sep 15 - Tue, Sep 22

9:05 am - 8:21 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

19h 16m2 stops Amsterdam Schiphol New York John F Kennedy Intl

1:50 pm - 4:50 pmSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

19h 00m1 stop Amsterdam Schiphol

$892KLM

Tue, Sep 15 - Tue, Sep 22

9:05 am - 4:35 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

15h 30m1 stop Amsterdam Schiphol

11:50 am - 4:50 pmSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

21h 00m2 stops New York John F Kennedy Intl Amsterdam Schiphol

$903Delta

Tue, Sep 15 - Tue, Sep 22

9:05 am - 4:35 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

15h 30m1 stop Amsterdam Schiphol

1:50 pm - 4:50 pmSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

19h 00m1 stop Amsterdam Schiphol

$903Delta

Tue, Sep 15 - Tue, Sep 22

9:05 am - 4:35 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

15h 30m1 stop Amsterdam Schiphol

6:00 am - 8:45 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

18h 45m2 stops Minneapolis St Paul Amsterdam Schiphol

$904Delta

Tue, Sep 15 - Tue, Sep 22

9:05 am - 4:35 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

15h 30m1 stop Amsterdam Schiphol

1:50 pm - 4:50 pmSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

19h 00m1 stop Amsterdam Schiphol

$904Delta

Tue, Sep 15 - Tue, Sep 22

9:05 am - 11:00 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

21h 55m2 stops Amsterdam Schiphol Boston Logan Intl

11:50 am - 4:50 pmSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

21h 00m2 stops New York John F Kennedy Intl Amsterdam Schiphol

$909Delta

Tue, Sep 15 - Tue, Sep 22

9:05 am - 11:20 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

22h 15m2 stops Amsterdam Schiphol New York John F Kennedy Intl

7:15 am - 8:45 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

17h 30m2 stops Chicago O'Hare Intl Amsterdam Schiphol

$910Delta

Tue, Sep 15 - Tue, Sep 22

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British Airways flights from Southampton to Seattle

Our best British Airways deals on Southampton to Seattle flight tickets

British Airways

Oct 13

SOU9:15 amSouthampton Eastleigh

15h 55m

1 stop

SEA5:10 pmSeattle/Tacoma Intl

Oct 21

SEA7:10 pmSeattle/Tacoma Intl

16h 20m

1 stop

SOU7:30 pmSouthampton Eastleigh

$1,033

British Airways

Sep 30

SOU8:00 pmSouthampton Eastleigh

29h 10m

1 stop

SEA5:10 pmSeattle/Tacoma Intl

Oct 14

SEA7:10 pmSeattle/Tacoma Intl

16h 20m

1 stop

SOU7:30 pmSouthampton Eastleigh

$1,050

British Airways

Oct 13

SOU9:15 amSouthampton Eastleigh

15h 55m

1 stop

SEA5:10 pmSeattle/Tacoma Intl

Oct 21

SEA1:30 pmSeattle/Tacoma Intl

21h 55m

2 stops

SOU7:25 pmSouthampton Eastleigh

$1,052

KLM flights from Southampton to Seattle

Our best KLM deals on Southampton to Seattle flight tickets

KLM

Sep 15

SOU9:05 amSouthampton Eastleigh

15h 30m

1 stop

SEA4:35 pmSeattle/Tacoma Intl

Sep 22

SEA5:45 pmSeattle/Tacoma Intl

15h 05m

1 stop

SOU4:50 pmSouthampton Eastleigh

$875

KLM

Sep 15

SOU5:20 pmSouthampton Eastleigh

26h 27m

1 stop

SEA11:47 amSeattle/Tacoma Intl

Sep 22

SEA1:50 pmSeattle/Tacoma Intl

19h 00m

1 stop

SOU4:50 pmSouthampton Eastleigh

$880

KLM

Sep 15

SOU9:05 amSouthampton Eastleigh

19h 16m

2 stops

SEA8:21 pmSeattle/Tacoma Intl

Sep 22

SEA1:50 pmSeattle/Tacoma Intl

19h 00m

1 stop

SOU4:50 pmSouthampton Eastleigh

$891

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 9/15

9:05 am-4:35 pm

1 stop15h 30m

Seattle/Tacoma Intl

Tue 9/22

5:45 pm-4:50 pm

1 stop15h 05m

$875

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 9/15

5:20 pm-11:47 am

1 stop26h 27m

Seattle/Tacoma Intl

Tue 9/22

1:50 pm-4:50 pm

1 stop19h 00m

$880

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 9/15

9:05 am-8:21 pm

2 stops19h 16m

Seattle/Tacoma Intl

Tue 9/22

1:50 pm-4:50 pm

1 stop19h 00m

$891

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 9/15

9:05 am-8:21 pm

2 stops19h 16m

Seattle/Tacoma Intl

Tue 9/22

1:50 pm-4:50 pm

1 stop19h 00m

$892

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 9/15

9:05 am-4:35 pm

1 stop15h 30m

Seattle/Tacoma Intl

Tue 9/22

11:50 am-4:50 pm

2 stops21h 00m

$903

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 9/15

9:05 am-4:35 pm

1 stop15h 30m

Seattle/Tacoma Intl

Tue 9/22

1:50 pm-4:50 pm

1 stop19h 00m

$903

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 9/15

9:05 am-4:35 pm

1 stop15h 30m

Seattle/Tacoma Intl

Tue 9/22

6:00 am-8:45 am

2 stops18h 45m

$904

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 9/15

9:05 am-4:35 pm

1 stop15h 30m

Seattle/Tacoma Intl

Tue 9/22

1:50 pm-4:50 pm

1 stop19h 00m

$904

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 9/15

9:05 am-11:00 pm

2 stops21h 55m

Seattle/Tacoma Intl

Tue 9/22

11:50 am-4:50 pm

2 stops21h 00m

$909

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 9/15

9:05 am-11:20 pm

2 stops22h 15m

Seattle/Tacoma Intl

Tue 9/22

7:15 am-8:45 am

2 stops17h 30m

$910

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 Monday. momondo users have found tickets for Monday departures for as low as $848. 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 $966.

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 $846 when looking at flights departing at noon. Flights to Seattle are more costly in the afternoon, with an average ticket price of $928. Departure times in the afternoon 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

Fastest flight time	15h 55m
Direct flights	None

The fastest flight from Southampton to Seattle takes 15h 55m

There are no direct flights from Southampton to Seattle. There are no popular flight routes from Southampton to Seattle.

Search flight deals

Frequently asked questions about flying from Southampton to Seattle

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 15h 55m, 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.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Kent

Lynnwood

Redmond

Lakewood

Puyallup

Fife

Federal Way

Tukwila

Cle Elum

Marysville

Kirkland

Centralia

Shoreline

Lacey

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.