Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

SEA - SOU

$551 Find cheap flights from Seattle to Southampton

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Southampton departing on 10/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sun 6/9
Sun 6/16

Search hundreds of travel sites at once for deals on flights to Southampton

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Southampton, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Southampton, as well as popular online travel agencies
In the last 7 days travelers have searched 43,156,178 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Seattle to Southampton (SEA-SOU)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Southampton that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:30 am - 7:25 amSEA-SOU
16h 55m2 stops
7:40 pm - 10:35 amSOU-SEA
22h 55m1 stop
$987Delta
Find Deal
Fri, Sep 27 - Tue, Oct 1
6:30 am - 7:25 amSEA-SOU
16h 55m2 stops
7:40 pm - 8:30 pmSOU-SEA
32h 50m2 stops
$997Delta
Find Deal
Fri, Sep 27 - Tue, Oct 1
6:10 pm - 4:50 pmSEA-SOU
14h 40m1 stop
7:40 pm - 4:50 pmSOU-SEA
29h 10m1 stop
$1,008Delta
Find Deal
Fri, Sep 27 - Tue, Oct 1
6:10 pm - 4:50 pmSEA-SOU
14h 40m1 stop
7:40 pm - 4:50 pmSOU-SEA
29h 10m1 stop
$1,009Delta
Find Deal
Fri, Sep 27 - Tue, Oct 1
7:40 am - 7:30 pmSEA-SOU
27h 50m2 stops
7:55 pm - 11:35 amSOU-SEA
23h 40m2 stops
$1,084British Airways
Find Deal
Tue, Sep 10 - Tue, Oct 8
7:40 pm - 7:25 pmSEA-SOU
15h 45m2 stops
8:40 am - 4:45 pmSOU-SEA
16h 05m2 stops
$1,100British Airways
Find Deal
Wed, Oct 23 - Fri, Nov 8
6:36 am - 7:30 pmSEA-SOU
28h 54m2 stops
9:40 am - 5:01 pmSOU-SEA
15h 21m1 stop
$1,123British Airways
Find Deal
Mon, Sep 9 - Thu, Oct 10
6:10 pm - 4:50 pmSEA-SOU
14h 40m1 stop
5:20 pm - 10:15 amSOU-SEA
24h 55m1 stop
$1,477KLM
Find Deal
Thu, Jul 18 - Sun, Jul 21
7:10 am - 8:00 amSEA-SOU
16h 50m2 stops
5:20 pm - 10:15 amSOU-SEA
24h 55m1 stop
$1,481KLM
Find Deal
Thu, Jul 18 - Sun, Jul 21
5:40 pm - 3:45 pmSEA-SOU
38h 05m2 stops
7:55 pm - 5:21 pmSOU-SEA
29h 26m2 stops
$1,766
Find Deal
Thu, Jul 18 - Sun, Jul 21

Flights from Seattle to Southampton - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Southampton to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Seattle to Southampton?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Southampton from Seattle were found on Delta ($551) and British Airways ($599), and the lowest round-trip tickets were found on Delta ($987) and British Airways ($1,084).

Good to know

Cheapest flight

$551
Flight from Seattle to Southampton

When to book flights from Seattle to Southampton

Are your dates flexible? Find out the best times to travel from Seattle to Southampton based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Southampton

  • What is the cheapest flight from Seattle to Southampton?

    In the last 3 days, the lowest price for a flight from Seattle to Southampton was $551 for a one-way ticket and $987 for a round-trip.

  • Do I need a passport to fly between Seattle and Southampton?

    Yes

  • Which airports will I be using when flying from Seattle to Southampton?

    On your way to Southampton, you’ll fly out from Seattle/Tacoma Intl. You’ll be landing at Southampton Eastleigh.

  • Which aircraft models fly most regularly from Seattle to Southampton?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Southampton?

    SkyTeam, and oneworld are the airline alliances operating flights between Seattle and Southampton, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Southampton, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Seattle to Southampton are Delta and KLM. With an average price for the route of $1,079 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $881 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Seattle to Southampton?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Southampton.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Southampton?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Southampton from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Southampton?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Southampton with an airline and back to Seattle with another airline. Booking your flights between Seattle and SOU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Southampton?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Southampton from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Seattle to Southampton

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Southampton. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Southampton? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10768 reviews
8.6Crew
8.0Entertainment
7.9Comfort
7.4Food
8.2Boarding
Airline reviews

Had a broken tray in business class. Crew just shrugged it off.

2.0 MediocreShiva, Apr 2024SEA - SFO
Read more about Delta reviews

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Overall a good experience. We were disappointed when we had to check our carry on due to the plane being full. KLM hadn’t notified us and we had valuable items in the carry on but they still made us check it. Some of the food was great and some was mediocre. Crew is really kind and funny.

It was nice to be on a legacy airline, people try at least.

Mostly fine. Minor delays departing and arriving. Quite a cramped plane, not so much as regards legroom but very narrow seats. Quiet nice food. Non-working USB charger. Flight attendants were helpful but not particularly proactive — one had to work to get their attention (but all was fine once they notice you), very Dutch style:)

The plane was clean and the staff was friendly. Food and drinks as expected on international flights. The entertainment system was old style, with a pullout controller, and selections not as extensive as on other flights.

I requested wheel chair assistance , it was confirmed via email that inwoood get it but I didn’t get it . The last leg of my trip to Nigeria was the worst.

The boarding was one of the worst I’ve ever experienced. The fault lays on Ohare Airport and not so much the airline. The waiting area by the gate was the size to accommodate a regional flight for 20-30 people and right next to a busy walkway. When you cramped nearly 300 passengers into that space is was unbearable.

All and all pretty good. It’s crowded but that is what flying is all about. But no complaints otherwise.

At the transit could be less time not like 12 hour 6 hours the mix should be 4 hour, thanks

Pros: "Crew was great, on time flight, clean plane."
Cons: "Entertainments options were shockingly few. Honestly have not been on a plane recently with so few and limited options of TV series and movies. I was extremely surprised. Wish I had know and I would’ve had more options for my family."
Pros: "Friendly crew, great access to a variety refreshments, robust entertainment library."
Cons: "No suggestions."

Book cheap flights from Seattle to Southampton

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Southampton found on KAYAK in the last 72 hours.
10/13Sun
1 stopDelta
17h 05mSEA-SOU
$551
8/12Mon
1 stopBritish Airways
16h 45mSEA-SOU
$599
10/17Thu
1 stopDelta
19h 20mSEA-SOU
$601
8/13Tue
1 stopDelta
14h 40mSEA-SOU
$610
10/13Sun
2 stopsBritish Airways
25h 34mSEA-SOU
$646
8/15Thu
1 stopDelta
14h 40mSEA-SOU
$660
8/14Wed
1 stopDelta
14h 40mSEA-SOU
$674
10/18Fri
2 stopsBritish Airways
24h 05mSEA-SOU
$684
8/16Fri
1 stopBritish Airways
13h 00mSEA-SOU
$688
8/12Mon
2 stopsBritish Airways
22h 04mSEA-SOU
$690

Search by stops

Search by airline

Search by price

Seattle - Southampton Flights

Departure:

Seattle (undefined)United States

Destination:

Southampton (SOU)United Kingdom

Return flight deals:

Southampton - Seattle

Cabin classes: