SEA - SOU

$392 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 8/15. 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
1 adult, Economy

KAYAK searches 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
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Flights Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Southampton

Wed, Jul 30 - Wed, Aug 6
Aer Lingus Logo
7:35 pm - 4:35 pmSEA-SOU
13h 00m1 stop
Aer Lingus Logo
9:10 am - 5:50 pmSOU-SEA
16h 40m1 stop
$676Aer Lingus
Find Deal
Mon, Aug 25 - Sun, Aug 31
 Logo
3:45 pm - 7:30 pmSEA-SOU
19h 45m2 stops
 Logo
8:00 pm - 5:50 pmSOU-SEA
29h 50m2 stops
Tue, Jul 29 - Tue, Aug 5
Aer Lingus Logo
8:00 am - 7:30 pmSEA-SOU
27h 30m2 stops
Aer Lingus Logo
9:10 am - 5:50 pmSOU-SEA
16h 40m1 stop
$741Aer Lingus
Find Deal
Wed, Jul 30 - Wed, Aug 6
Aer Lingus Logo
2:30 pm - 7:30 pmSEA-SOU
21h 00m2 stops
Aer Lingus Logo
9:10 am - 5:50 pmSOU-SEA
16h 40m1 stop
$760Aer Lingus
Find Deal
Tue, Jul 29 - Tue, Aug 5
Aer Lingus Logo
7:35 pm - 8:40 amSEA-SOU
29h 05m1 stop
Aer Lingus Logo
9:10 am - 5:50 pmSOU-SEA
16h 40m1 stop
$891Aer Lingus
Find Deal
Sun, Aug 24 - Sun, Aug 31
Aer Lingus Logo
12:45 am - 8:40 amSEA-SOU
23h 55m2 stops
Aer Lingus Logo
9:10 am - 5:50 pmSOU-SEA
16h 40m1 stop
$909Aer Lingus
Find Deal
Mon, Aug 25 - Sun, Aug 31
Delta Logo
2:10 pm - 5:00 pmSEA-SOU
18h 50m1 stop
Delta Logo
9:20 am - 3:55 pmSOU-SEA
14h 35m1 stop
$959Delta
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Sun, Aug 3 - Tue, Aug 12
Delta Logo
1:55 pm - 5:50 pmSEA-SOU
19h 55m1 stop
Delta Logo
6:25 pm - 11:35 amSOU-SEA
25h 10m1 stop
$994Delta
Find Deal
Mon, Jul 21 - Wed, Jul 30
British Airways Logo
1:30 pm - 4:00 pmSEA-SOU
18h 30m2 stops
British Airways Logo
9:10 am - 5:50 pmSOU-SEA
16h 40m1 stop
$2,323British Airways
Find Deal
Fri, Aug 29 - Wed, Sep 3
British Airways Logo
1:30 pm - 1:20 pmSEA-SOU
15h 50m2 stops
British Airways Logo
9:10 am - 5:50 pmSOU-SEA
16h 40m1 stop
$2,373British Airways
Find Deal
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KAYAK's insights & trends for Seattle to Southampton flights

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 round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Seattle to Southampton were found on Aer Lingus ($676) and Delta ($959).

Good to know

Cheapest flight$392
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 $392 for a one-way ticket and $676 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 $836 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 $1,281 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.

Top 3 airlines serving 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 7963 reviews
8.2Boarding
7.9Comfort
7.9Entertainment
7.3Food
8.5Crew
Airline reviews

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

4.0 OkayKoonj, Jun 2025MSP - AUS
Read more Delta reviews

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Overall, aside from the baggage issue, it was as good as one expects.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

I want to single out flight attendant Mitch who was in the Premium Economy section. When my wife’s hearing aide dropped through the cushion under the seat he was able to locate it and return it to her. Food was a different matter. Dinner was fine. Breakfast was another matter. They had a yogurt dish that the ran out of and the alternative was not very good according to those we talked to.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Flight was delayed long enough that I was misding my connecting flight. The agents could not get me on a comparable flight, nor could they get me s Main Cabin seat I had paid for, nor could they get me on a comparable connecting flight. The gate agent would not issue meal vouchers, even though I was delayed over six hours! I had to spend over an hour and 15 minutes with customer service on the phone to See if they could get me on a better flight and get a meal voucher. Customer service was not helpful enough in trying to find alternate flights and it Ended up taking me 24 hours for a 12 hour trip!! Delta does not provide upgrades NOR will they even give you a pass for a few hours to their lounge. They claim that they do not issue daily passes to their lounge anymore. I call BS since this would be no extra cost to them to provide excellent customer service and give you a few hours to relax in comfort when you’re sitting in a crowded airport and your flight has been screwed up for that many hours.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Klm start boarding while somw air issue in the plan

The service was great. However the lounge only gets passing grade

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

They only had vegetarian food left on the flight which I wasn’t happy about. I didn’t get any food to eat at all.

The payment system was not working so was unable to connect wifi the entire flight

everything to do with KAYAK was terrible. Your customer facing departments are utterly useless, timewasting and unhelpful.

I ordered short ribs for main course. It tasted sweet, really sweet. Horrible.

The screen didn’t work and I didn’t get the seat upgrade I paid $300 for. They were no help with that,

Paid $180 for seat selection, and selection essnt honored. Have to call for a refund.

My flights were great and the crew on them was lovely especially the London to Barcelona flight as Al & AJ were so amazingly nice. I wish they would be my crew always as they have the best customer service. Sadly both flights were delayed the first one from Vegas was because they clearly loaded the cargo wrong the plane was off balance making us 2 hours late. This made me miss my connection and sadly it was challenging rebooking while I was on the flight. I will never use Kayak again as there was no customer service number or live chat and you rebooked me on a flight 2 days later. I had my mom call BA to change it which she did after spending an hour on hold. This should not be so difficult. My second flight was an hour delayed due to not being able to disconnect the bridge from the plane but I did finally make it home.

The delay was not communicated via text and the person who helped with check in also didn’t inform me about the delay. I ended up missing my connection and it was a waste of 5 hours. The crew didn’t mention there would be someone at the gate informing of if I would be rebooked and there was no signage. Overall a very poor experience. The British Airways app was also very buggy, and didn’t work. I will avoid flying with British Airways when possible.

A little better than outward journey but mild chaos at the boarding gate because some people with boarding cards from connecting flights had cards which weren't recognised

The BA business class cabin is excellent,very comfortable for sleeping but the service could be improved.

Surly rude flight attendants. I ordered the chicken and was given a vegetarian meal with no explanation and no opportunity to change it. I tried to order another beverage and was told by the young humorless flight attendant to “wait”. And she never came back. The seats were very uncomfortable and cramped. The last time I flew British Airways was many years ago but I remember it was amazing and the crew were very charming. This was a terrible disappointment given the cost of the flight.

Everything you need to know for your flight from Seattle to Southampton

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