Cheap flights from Seattle to London from $395
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to London departing on 10/18. 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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Aer Lingus flights from Seattle to Southampton
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British Airways flights from Seattle to Southampton
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How to get the cheapest flight ticket from Seattle to Southampton
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 Southampton?
On average, the least expensive day to fly to Southampton from Seattle is on a Saturday. momondo users have found tickets for Saturday departures for as low as $944. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Southampton for around $1,316.
What is the cheapest time of day to depart on your flight to Southampton?
Flying to Southampton from Seattle at noon is the least expensive time of day to depart. momondo users have found prices as low as $1,075 when looking at flights departing at noon. Flights to Southampton are more costly in the evening, with an average ticket price of $1,182. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Southampton Eastleigh?
Delta, Aer Lingus, and KLM are the most popular carriers operating from Seattle/Tacoma Intl to Southampton Eastleigh
What airlines fly to Southampton?
British Airways, Delta and Virgin Atlantic are the top three most popular airlines that fly to Southampton from Seattle according to our data. British Airways is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 15 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.
When to book flights from Seattle to Southampton
Cheap Seattle to Southampton (SEA to SOU) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Southampton
How far is Seattle/Tacoma Intl to Southampton Eastleigh by plane?
A flight from Seattle/Tacoma Intl to Southampton Eastleigh will travel around 4779.5 mi. 13h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Southampton Eastleigh Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Southampton Eastleigh Airport are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Southampton Eastleigh Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Southampton Eastleigh Airport is 3 as of April 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Southampton Eastleigh Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Southampton Eastleigh Airport.
What documentation or ID do you need to fly to Southampton Eastleigh Airport?
The travel and health documents you'll need for your trip to Southampton Eastleigh Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Southampton Eastleigh Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Seattle to Southampton?
momondo data reveals that the most frequently booked airline on the route from Seattle to Southampton is KLM, representing 41% of all bookings. The subsequent popular airlines are British Airways at 29% and Delta at 29%.
Best airlines flying from Seattle to Southampton
Compare and see reviews for airlines that fly from Seattle to Southampton with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $738 | Free Cancellation | Rating 7.8 1,334 reviews | |||
| PriceFrom $794 | Free Cancellation | Rating 8.0 7,929 reviews | |||
| PriceFrom $944 | Free Cancellation | Rating 6.6 6,835 reviews |
Traveling to a place near London?
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Why should I use momondo to find a flight deal from Seattle to Southampton?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Southampton from Seattle.
Can I find flights from Seattle to Southampton with flexible booking policies on momondo?
All flight searches from Seattle to Southampton on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Seattle to Southampton?
Once all potential Seattle to Southampton 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 Seattle to Southampton right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Southampton from Seattle. 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.