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 31% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 6 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.

$1,049 Cheap Flights from Southampton to Seattle in 2026/27

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.

5:30 pm - 5:28 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

31h 58m2 stops Amsterdam Schiphol Portland

2:35 pm - 8:10 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

33h 35m1 stop Amsterdam Schiphol

$1,049KLM

Sun, Dec 20 - Sun, Dec 27

9:30 am - 11:50 amSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

34h 20m1 stop Amsterdam Schiphol

2:35 pm - 8:10 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

33h 35m1 stop Amsterdam Schiphol

$1,125Multiple Airlines

Sun, Dec 20 - Sun, Dec 27

5:30 pm - 5:28 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

31h 58m2 stops Amsterdam Schiphol Portland

6:00 am - 8:10 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

18h 10m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol

$1,146Multiple Airlines

Sun, Dec 20 - Sun, Dec 27

5:30 pm - 11:50 amSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

26h 20m1 stop Amsterdam Schiphol

2:35 pm - 5:05 pmSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

18h 30m1 stop Amsterdam Schiphol

$1,155KLM

Sun, Dec 20 - Sun, Dec 27

12:25 pm - 11:42 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

19h 17m2 stops Dublin Chicago O'Hare Intl

11:59 pm - 8:45 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

24h 46m2 stops Chicago O'Hare Intl Dublin

$1,174Aer Lingus

Thu, Dec 17 - Thu, Dec 24

7:45 pm - 4:50 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

53h 05m2 stops Edinburgh Turnhouse London Heathrow

6:45 pm - 8:20 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

29h 35m2 stops London Heathrow Edinburgh Turnhouse

$1,186British Airways

Thu, Jan 28 - Mon, Feb 1

7:45 pm - 4:50 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

53h 05m2 stops Edinburgh Turnhouse London Heathrow

6:45 pm - 8:20 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

29h 35m2 stops London Heathrow Edinburgh Turnhouse

$1,187British Airways

Thu, Jan 28 - Mon, Feb 1

7:45 pm - 4:50 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

53h 05m2 stops Edinburgh Turnhouse London Heathrow

6:45 pm - 8:20 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

29h 35m2 stops London Heathrow Edinburgh Turnhouse

$1,188British Airways

Thu, Jan 28 - Mon, Feb 1

4:10 pm - 4:50 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

32h 40m2 stops Belfast City London Heathrow

6:45 pm - 8:20 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

29h 35m2 stops London Heathrow Edinburgh Turnhouse

$1,203British Airways

Thu, Feb 25 - Mon, Mar 1

8:40 am - 8:49 pmSOU Southampton Eastleigh-SEA Seattle/Tacoma Intl

20h 09m2 stops Amsterdam Schiphol Minneapolis St Paul

2:35 pm - 8:55 amSEA Seattle/Tacoma Intl-SOU Southampton Eastleigh

34h 20m1 stop Amsterdam Schiphol

$1,258Multiple Airlines

Thu, Dec 17 - Thu, Dec 24

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British Airways flights from Southampton to Seattle

Our best British Airways deals on Southampton to Seattle flight tickets

British Airways

Jan 28

SOU7:45 pmSouthampton Eastleigh

53h 05m

2 stops

SEA4:50 pmSeattle/Tacoma Intl

Feb 1

SEA6:45 pmSeattle/Tacoma Intl

29h 35m

2 stops

SOU8:20 amSouthampton Eastleigh

$1,186

British Airways

Jan 28

SOU7:45 pmSouthampton Eastleigh

53h 05m

2 stops

SEA4:50 pmSeattle/Tacoma Intl

Feb 1

SEA6:45 pmSeattle/Tacoma Intl

29h 35m

2 stops

SOU8:20 amSouthampton Eastleigh

$1,187

British Airways

Jan 28

SOU7:45 pmSouthampton Eastleigh

53h 05m

2 stops

SEA4:50 pmSeattle/Tacoma Intl

Feb 1

SEA6:45 pmSeattle/Tacoma Intl

29h 35m

2 stops

SOU8:20 amSouthampton Eastleigh

$1,188

KLM flights from Southampton to Seattle

Our best KLM deals on Southampton to Seattle flight tickets

KLM

Dec 20

SOU5:30 pmSouthampton Eastleigh

31h 58m

2 stops

SEA5:28 pmSeattle/Tacoma Intl

Dec 27

SEA2:35 pmSeattle/Tacoma Intl

33h 35m

1 stop

SOU8:10 amSouthampton Eastleigh

$1,049

KLM

Dec 20

SOU5:30 pmSouthampton Eastleigh

26h 20m

1 stop

SEA11:50 amSeattle/Tacoma Intl

Dec 27

SEA2:35 pmSeattle/Tacoma Intl

18h 30m

1 stop

SOU5:05 pmSouthampton Eastleigh

$1,155

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Sun 12/20

5:30 pm-5:28 pm

2 stops31h 58m

Seattle/Tacoma Intl

Sun 12/27

2:35 pm-8:10 am

1 stop33h 35m

$1,049

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Sun 12/20

9:30 am-11:50 am

1 stop34h 20m

Seattle/Tacoma Intl

Sun 12/27

2:35 pm-8:10 am

1 stop33h 35m

$1,125

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Sun 12/20

5:30 pm-5:28 pm

2 stops31h 58m

Seattle/Tacoma Intl

Sun 12/27

6:00 am-8:10 am

2 stops18h 10m

$1,146

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Sun 12/20

5:30 pm-11:50 am

1 stop26h 20m

Seattle/Tacoma Intl

Sun 12/27

2:35 pm-5:05 pm

1 stop18h 30m

$1,155

Quickest round-trip

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Thu 12/17

12:25 pm-11:42 pm

2 stops19h 17m

Seattle/Tacoma Intl

Thu 12/24

11:59 pm-8:45 am

2 stops24h 46m

$1,174

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Thu 1/28

7:45 pm-4:50 pm

2 stops53h 05m

Seattle/Tacoma Intl

Mon 2/1

6:45 pm-8:20 am

2 stops29h 35m

$1,186

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Thu 1/28

7:45 pm-4:50 pm

2 stops53h 05m

Seattle/Tacoma Intl

Mon 2/1

6:45 pm-8:20 am

2 stops29h 35m

$1,187

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Thu 1/28

7:45 pm-4:50 pm

2 stops53h 05m

Seattle/Tacoma Intl

Mon 2/1

6:45 pm-8:20 am

2 stops29h 35m

$1,188

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Thu 2/25

4:10 pm-4:50 pm

2 stops32h 40m

Seattle/Tacoma Intl

Mon 3/1

6:45 pm-8:20 am

2 stops29h 35m

$1,203

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Thu 12/17

8:40 am-8:49 pm

2 stops20h 09m

Seattle/Tacoma Intl

Thu 12/24

2:35 pm-8:55 am

1 stop34h 20m

$1,258

Flights are sorted by cheapest round-trip flights first.

Sorted 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 $771. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday 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 $883.

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 $666 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $874. 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

Best Price Found	$1,049
Fastest flight time	29h 05m
Direct flights	None

The best flight deal from Southampton to Seattle found on momondo in the last 72 hours is $1,049

The fastest flight from Southampton to Seattle takes 29h 05m

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 29h 05m, 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

Kent

Olympia

Federal Way

Redmond

Lakewood

Lynnwood

Fife

Puyallup

Tukwila

Cle Elum

Marysville

Lacey

Kirkland

Centralia

Shoreline

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.