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 41% 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.

$739 Cheap Flights from Southampton to Seattle in 2026

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Find the cheapest flights from Southampton to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:15 am - 11:42 am

SOU

SEA

34h 27m

1 stop

1:45 pm - 8:35 am

SEA

SOU

34h 50m

1 stop

$1,005KLM

Sat, May 2 - Sat, May 9

9:15 am - 11:42 am

SOU

SEA

34h 27m

1 stop

10:35 am - 8:45 am

SEA

SOU

14h 10m

2 stops

$1,009KLM

Sat, May 2 - Sat, May 9

9:15 am - 8:25 pm

SOU

SEA

19h 10m

2 stops

9:30 am - 8:45 am

SEA

SOU

15h 15m

2 stops

$1,036Multiple Airlines

Sat, May 2 - Sat, May 9

8:00 pm - 5:10 pm

SOU

SEA

29h 10m

1 stop

7:10 pm - 7:30 pm

SEA

SOU

16h 20m

1 stop

$1,076Aer Lingus

Tue, Mar 31 - Tue, Apr 14

9:05 am - 11:45 am

SOU

SEA

34h 40m

1 stop

1:30 pm - 4:50 pm

SEA

SOU

19h 20m

2 stops

$1,079KLM

Tue, Mar 31 - Tue, Apr 14

2:25 pm - 5:10 pm

SOU

SEA

34h 45m

2 stops

7:10 pm - 8:05 am

SEA

SOU

28h 55m

1 stop

$1,088British Airways

Thu, May 7 - Mon, May 11

2:25 pm - 5:10 pm

SOU

SEA

34h 45m

2 stops

7:10 pm - 8:05 am

SEA

SOU

28h 55m

1 stop

$1,092British Airways

Thu, May 7 - Mon, May 11

2:25 pm - 5:10 pm

SOU

SEA

34h 45m

2 stops

8:20 pm - 8:25 am

SEA

SOU

28h 05m

2 stops

$1,103British Airways

Thu, May 7 - Mon, May 11

2:25 pm - 5:10 pm

SOU

SEA

34h 45m

2 stops

8:20 pm - 8:25 am

SEA

SOU

28h 05m

2 stops

$1,106British Airways

Thu, May 7 - Mon, May 11

8:00 pm - 5:10 pm

SOU

SEA

29h 10m

1 stop

7:10 pm - 8:05 am

SEA

SOU

28h 55m

1 stop

$1,107British Airways

Thu, May 7 - Mon, May 11

KLM flights from Southampton to Seattle

Our best KLM deals on Southampton to Seattle flight tickets

KLM

May 2

SOU9:15 amSouthampton Eastleigh

34h 27m

1 stop

SEA11:42 amSeattle/Tacoma Intl

May 9

SEA1:45 pmSeattle/Tacoma Intl

34h 50m

1 stop

SOU8:35 amSouthampton Eastleigh

$1,005

KLM

May 2

SOU9:15 amSouthampton Eastleigh

34h 27m

1 stop

SEA11:42 amSeattle/Tacoma Intl

May 9

SEA10:35 amSeattle/Tacoma Intl

14h 10m

2 stops

SOU8:45 amSouthampton Eastleigh

$1,009

KLM

Mar 31

SOU9:05 amSouthampton Eastleigh

34h 40m

1 stop

SEA11:45 amSeattle/Tacoma Intl

Apr 14

SEA1:30 pmSeattle/Tacoma Intl

19h 20m

2 stops

SOU4:50 pmSouthampton Eastleigh

$1,079

British Airways flights from Southampton to Seattle

Our best British Airways deals on Southampton to Seattle flight tickets

British Airways

May 7

SOU2:25 pmSouthampton Eastleigh

34h 45m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

May 11

SEA7:10 pmSeattle/Tacoma Intl

28h 55m

1 stop

SOU8:05 amSouthampton Eastleigh

$1,088

British Airways

May 7

SOU2:25 pmSouthampton Eastleigh

34h 45m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

May 11

SEA7:10 pmSeattle/Tacoma Intl

28h 55m

1 stop

SOU8:05 amSouthampton Eastleigh

$1,092

British Airways

May 7

SOU2:25 pmSouthampton Eastleigh

34h 45m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

May 11

SEA8:20 pmSeattle/Tacoma Intl

28h 05m

2 stops

SOU8:25 amSouthampton Eastleigh

$1,103

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Sat 5/2

9:15 am-11:42 am

1 stop34h 27m

Seattle/Tacoma Intl

Sat 5/9

1:45 pm-8:35 am

1 stop34h 50m

$1,005

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Sat 5/2

9:15 am-11:42 am

1 stop34h 27m

Seattle/Tacoma Intl

Sat 5/9

10:35 am-8:45 am

2 stops14h 10m

$1,009

Quickest round-trip

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Sat 5/2

9:15 am-8:25 pm

2 stops19h 10m

Seattle/Tacoma Intl

Sat 5/9

9:30 am-8:45 am

2 stops15h 15m

$1,036

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 3/31

8:00 pm-5:10 pm

1 stop29h 10m

Seattle/Tacoma Intl

Tue 4/14

7:10 pm-7:30 pm

1 stop16h 20m

$1,076

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 3/31

9:05 am-11:45 am

1 stop34h 40m

Seattle/Tacoma Intl

Tue 4/14

1:30 pm-4:50 pm

2 stops19h 20m

$1,079

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 5/7

2:25 pm-5:10 pm

2 stops34h 45m

Seattle/Tacoma Intl

Mon 5/11

7:10 pm-8:05 am

1 stop28h 55m

$1,088

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 5/7

2:25 pm-5:10 pm

2 stops34h 45m

Seattle/Tacoma Intl

Mon 5/11

7:10 pm-8:05 am

1 stop28h 55m

$1,092

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 5/7

2:25 pm-5:10 pm

2 stops34h 45m

Seattle/Tacoma Intl

Mon 5/11

8:20 pm-8:25 am

2 stops28h 05m

$1,103

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 5/7

2:25 pm-5:10 pm

2 stops34h 45m

Seattle/Tacoma Intl

Mon 5/11

8:20 pm-8:25 am

2 stops28h 05m

$1,106

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 5/7

8:00 pm-5:10 pm

1 stop29h 10m

Seattle/Tacoma Intl

Mon 5/11

7:10 pm-8:05 am

1 stop28h 55m

$1,107

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 Wednesday. momondo users have found tickets for Wednesday departures for as low as $774. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday 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 $1,046.

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

Flying to Seattle from Southampton in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $834 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $867. 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

Fastest flight time	15h 50m
Direct flights	None

The fastest flight from Southampton to Seattle takes 15h 50m

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 15h 50m, 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

Lynnwood

Kent

Redmond

Marysville

Puyallup

Cle Elum

Lakewood

Tukwila

Federal Way

Fife

Westport

Centralia

Kirkland

Tumwater

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.