HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Seattle (SEA) to Southampton (SOU) from $401

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/26. 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.
SEA — SOU
Jun 11 — Jun 181
From?
To?
Tue 6/11
Tue 6/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from Seattle to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Southampton (SOU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 6, 2024.

Popular in

June

Cheapest in

October

Round-trip from

$643

One-way from

$549
High demand for flights, 29% potential price rise
Search Deals
Best time to find cheap flights, 22% potential price drop
Search Deals
From Seattle/Tacoma Intl to Southampton Eastleigh
Search Deals
One-way flight from Seattle/Tacoma Intl to Southampton Eastleigh
Search Deals

What is the cheapest day to fly round-trip from Seattle to Southampton?

It’s generally more expensive to depart on a Sunday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from Seattle to Southampton?

Travelers have found it’s best to book a flight 8 days in advance to save up to 51% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 8 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to Southampton 1-2 weeks in advance for as low as $666, or $1,099 for flights within the next 24 hours.

What is the cheapest month to fly from Seattle to Southampton?

November is one of the best times of the year to fly to Southampton from Seattle. Prices for November average $859 per person but you can even find prices for as low as $560. The most expensive prices can be found in the month of June. Opting for a November flight can save you 40% on your journey compared to booking in June

What is the cheapest time of day to fly from SEA to SOU?

When flying from Seattle to Southampton, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 8% versus a flight in the afternoon.

Cheap Seattle to Southampton flights in June & July 2024

Find cheap flight options from Seattle to Southampton specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on June 6, 2024.
The lowest fares we've come across on flights traveling from Seattle to Southampton in June and July 2024. For more flight deals, be sure to check back very soon.
Wed 6/197:10 amSEA - SOU
2 stops28h 00mDelta
Sun 6/237:40 pmSOU - SEA
1 stop22h 40mDelta
Deal found 6/5$1,256
Wed 6/197:10 amSEA - SOU
2 stops28h 00mDelta
Sun 6/239:25 amSOU - SEA
1 stop32h 55mDelta
Deal found 6/6$1,258
Wed 6/196:05 pmSEA - SOU
1 stop17h 05mKLM
Sun 6/237:40 pmSOU - SEA
1 stop22h 40mKLM
Deal found 6/6$1,410
Wed 6/196:05 pmSEA - SOU
1 stop17h 05mKLM
Sun 6/237:40 pmSOU - SEA
1 stop22h 40mKLM
Deal found 6/5$1,514
Sun 7/76:45 pmSEA - SOU
1 stop30h 25mBritish Airways
Wed 7/108:00 pmSOU - SEA
2 stops31h 21mBritish Airways
Deal found 6/5$1,677
Sun 7/77:40 pmSEA - SOU
2 stops15h 45mBritish Airways
Wed 7/107:55 pmSOU - SEA
2 stops29h 50mBritish Airways
Deal found 6/5$1,962
Wed 6/195:10 pmSEA - SOU
2 stops15h 40mKLM
Sun 6/239:25 amSOU - SEA
2 stops19h 15mKLM
Deal found 6/5$2,111
Wed 6/195:10 pmSEA - SOU
2 stops15h 40mKLM
Sun 6/239:25 amSOU - SEA
2 stops19h 00mKLM
Deal found 6/6$2,438
Sun 6/301:40 pmSEA - SOU
2 stops18h 20mBritish Airways
Mon 7/17:55 pmSOU - SEA
2 stops23h 40mBritish Airways
Deal found 6/5$2,513

Seattle to Southampton 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Southampton in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
The lowest fares we've come across on flights traveling from Seattle to Southampton in June and July 2024. For more flight deals, be sure to check back very soon.
Thu 8/16:45 pmSEA - SOU
1 stop16h 45mBritish Airways
Tue 8/69:40 amSOU - SEA
1 stop15h 21mBritish Airways
Deal found 6/6$1,199
Thu 8/11:30 pmSEA - SOU
2 stops18h 30mBritish Airways
Tue 8/69:40 amSOU - SEA
1 stop15h 21mBritish Airways
Deal found 6/6$1,203
Wed 6/197:10 amSEA - SOU
2 stops28h 00mDelta
Sun 6/237:40 pmSOU - SEA
1 stop22h 40mDelta
Deal found 6/5$1,256
Wed 6/197:10 amSEA - SOU
2 stops28h 00mDelta
Sun 6/239:25 amSOU - SEA
1 stop32h 55mDelta
Deal found 6/6$1,258
Sun 9/226:45 pmSEA - SOU
1 stop16h 45mBritish Airways
Sat 9/289:40 amSOU - SEA
1 stop15h 21mBritish Airways
Deal found 6/5$1,272
Sun 9/221:40 pmSEA - SOU
2 stops18h 20mBritish Airways
Sat 9/289:40 amSOU - SEA
1 stop15h 21mBritish Airways
Deal found 6/5$1,276
Sun 9/227:40 pmSEA - SOU
2 stops15h 45mBritish Airways
Sat 9/289:55 amSOU - SEA
2 stops15h 35mBritish Airways
Deal found 6/5$1,308
Wed 6/196:05 pmSEA - SOU
1 stop17h 05mKLM
Sun 6/237:40 pmSOU - SEA
1 stop22h 40mKLM
Deal found 6/6$1,410
Wed 6/196:05 pmSEA - SOU
1 stop17h 05mKLM
Sun 6/237:40 pmSOU - SEA
1 stop22h 40mKLM
Deal found 6/5$1,514

Seattle to Southampton flights leaving soon

Find last-minute flight options from Seattle to Southampton for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Check out these flights departing soon from Seattle to Southampton. It's wise to confirm all flight details are correct before booking.
Wed 6/197:10 amSEA - SOU
2 stops28h 00mDelta
Sun 6/237:40 pmSOU - SEA
1 stop22h 40mDelta
Deal found 6/5$1,256
Wed 6/196:05 pmSEA - SOU
1 stop17h 05mKLM
Sun 6/237:40 pmSOU - SEA
1 stop22h 40mKLM
Deal found 6/5$1,514
Wed 6/195:10 pmSEA - SOU
2 stops15h 40mKLM
Sun 6/239:25 amSOU - SEA
2 stops19h 15mKLM
Deal found 6/5$2,111
Mon 6/177:06 amSEA - SOU
2 stops28h 24mBritish Airways
Wed 6/267:55 pmSOU - SEA
2 stops23h 35mBritish Airways
Deal found 6/4$2,602
Mon 6/176:45 pmSEA - SOU
1 stop16h 45mBritish Airways
Wed 6/267:55 pmSOU - SEA
2 stops29h 50mBritish Airways
Deal found 6/4$3,809
Wed 6/191:30 pmSEA - SOU
2 stops18h 30mBritish Airways
Wed 6/267:55 pmSOU - SEA
2 stops29h 50mBritish Airways
Deal found 6/5$4,061
Thu 6/201:30 pmSEA - SOU
2 stops21h 45mBritish Airways
Thu 6/278:40 amSOU - SEA
2 stops17h 05mBritish Airways
Deal found 6/4$7,959
Thu 6/201:30 pmSEA - SOU
2 stops21h 45mBritish Airways
Thu 6/279:40 amSOU - SEA
1 stop15h 21mBritish Airways
Deal found 6/4$10,408
Sun 6/97:40 pmSEA - SOU
2 stops28h 30mBritish Airways
Wed 6/267:55 pmSOU - SEA
2 stops23h 35mBritish Airways
Deal found 6/5$12,819

One-way flights to Southampton from Seattle

Search for one-way flight options from Seattle to Southampton. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Take a look at some of the best available options we've come across on one-way flights from Seattle to Southampton. Users can also find round-trip Seattle to Southampton flights by using the search form above.
Thu 9/266:55 pmSEA - SOU
3 stops54h 15mMultiple Airlines
Deal found 6/5$401
Fri 6/286:15 pmSEA - SOU
2 stops54h 55mMultiple Airlines
Deal found 6/5$438
Thu 9/266:45 pmSEA - SOU
1 stop30h 25mAer Lingus
Deal found 6/5$475
Fri 6/286:15 pmSEA - SOU
3 stops43h 05mMultiple Airlines
Deal found 6/5$508
Tue 8/66:45 pmSEA - SOU
1 stop16h 45mBritish Airways
Deal found 6/5$537
Tue 8/67:20 amSEA - SOU
2 stops28h 10mBritish Airways
Deal found 6/5$541
Thu 9/2611:20 pmSEA - SOU
2 stops24h 05mVirgin Atlantic
Deal found 6/5$549
Thu 9/266:45 pmSEA - SOU
1 stop30h 25mAer Lingus
Deal found 6/5$561
Sun 8/46:45 pmSEA - SOU
1 stop16h 45mBritish Airways
Deal found 6/5$637

Find flights from Seattle to Southampton within your budget

Customize your flight search to find flights from Seattle to Southampton that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,199 - $2,111

Route

Depart

Return

Price

Seattle/Tacoma IntlSouthampton Eastleigh

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Thu 8/1

1 stop16h 45m

Southampton Eastleigh

Tue 8/6

1 stop15h 21m

$1,199

Seattle/Tacoma IntlSouthampton Eastleigh

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Thu 8/1

2 stops18h 30m

Southampton Eastleigh

Tue 8/6

1 stop15h 21m

$1,203

Seattle/Tacoma IntlSouthampton Eastleigh

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Wed 6/19

2 stops28h 00m

Southampton Eastleigh

Sun 6/23

1 stop22h 40m

$1,256

Seattle/Tacoma IntlSouthampton Eastleigh

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sun 9/22

1 stop16h 45m

Southampton Eastleigh

Sat 9/28

1 stop15h 21m

$1,272

Seattle/Tacoma IntlSouthampton Eastleigh

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sun 9/22

2 stops18h 20m

Southampton Eastleigh

Sat 9/28

1 stop15h 21m

$1,276

Seattle/Tacoma IntlSouthampton Eastleigh

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sun 9/22

2 stops15h 45m

Southampton Eastleigh

Sat 9/28

2 stops15h 35m

$1,308

Seattle/Tacoma IntlSouthampton Eastleigh

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Wed 6/19

1 stop17h 05m

Southampton Eastleigh

Sun 6/23

1 stop22h 40m

$1,514

Seattle/Tacoma IntlSouthampton Eastleigh

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Thu 8/1

2 stops18h 30m

Southampton Eastleigh

Tue 8/6

2 stops23h 40m

$1,586

Seattle/Tacoma IntlSouthampton Eastleigh

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Wed 6/19

2 stops15h 40m

Southampton Eastleigh

Sun 6/23

2 stops19h 15m

$2,111

Flights are sorted by cheapest first

Deals found on 6/6

What is the cheapest day to fly from Seattle to Southampton?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Southampton. Price data was last updated on June 2, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Southampton flight should consider departing on Wednesday at noon when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Seattle to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Southampton by month

Plan your trip to Southampton by taking into account the average temperature and rainfall totals by month.

LON

Temperature

39.2 - 62.6 °F

If weather is an important factor for your trip to Southampton, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Southampton

Get insights into the airlines that provide service to Southampton. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southampton. Reviews last updated June 6, 2024.
Read reviews from past customers who have flown British Airways, Delta and KLM from Seattle to Southampton. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,368 reviews

Food

7.4

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,368 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,489 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Virgin Atlantic
7.6
Good
718 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Aer Lingus
7.2
Good
1,287 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

British Airways
6.8
Okay
6,754 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Seattle to Southampton for under $1,200 on Cheapflights?

    Yes, there are multiple flights from Seattle to Southampton for under $1,200. The cheapest flight booked recently is on British Airways for just $1,199, but on average you can expect to pay $2,347.

  • Are there last-minute flights available from Seattle to Southampton for under $1,300?

    There are currently 9+ open flights from Seattle to Southampton within the next 7 days for less than $1,300.

  • What are the cheapest airlines flying from Seattle to Southampton round-trip?

    British Airways, at $1,199, was found to be the cheapest airline from Seattle to Southampton.Alternate airlines to your destination round-trip include Delta and KLM.

  • What are the cheapest airlines to fly from Seattle to Southampton one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $475. British Airways flights start at $537 while deals on Virgin Atlantic start at $549 one-way.

  • What does SEA to SOU mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Seattle/Tacoma Intl Airport to Southampton Eastleigh Airport flight would often be abbreviated as a SEA to SOU flight.

  • Can I find deals for flights from Seattle to Southampton that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Southampton flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Southampton with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Southampton flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Seattle to Southampton that include hotel bookings?

    Yes. In addition to deals on Seattle to Southampton flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Southampton.

  • Can I find deals for business class flights from Seattle to Southampton?

    Yes. Cheapflights offers flight deals from Seattle to Southampton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Seattle to Southampton that allow pets onboard?

    Many airlines flying from Seattle to Southampton offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Southampton?

    Yes, you can often find last-minute deals on Seattle to Southampton flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Southampton flight deals updated?

    The Seattle to Southampton flight deals you see on this page were last updated on 6/6.

  • What is the cheapest month to book a flight from Seattle to Southampton?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Southampton (average of $724). Flying from Seattle to Southampton in June is currently the most expensive (average of $1,352). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Southampton
See prices for flight routes from nearby airports that may be better suited for you.

Seattle to Heathrow flights
Seattle to Gatwick flights
Seattle to London City flights
Portland to Heathrow flights
Seattle to Luton flights
Portland to Gatwick flights
Portland to London City flights
Seattle to Edinburgh flights
Portland to Edinburgh flights
Seattle to Stansted flights
Seattle to Manchester flights
Portland to Luton flights
Spokane to Heathrow flights
Seattle to Birmingham flights
Spokane to Gatwick flights
Portland to Stansted flights
Portland to Manchester flights
Spokane to London City flights
Pasco to Heathrow flights
Spokane to Edinburgh flights
Bellingham to Heathrow flights
Seattle to Newcastle upon Tyne flights
Seattle to Liverpool flights
Portland to Leeds flights
Seattle to Bristol flights
Seattle to Leeds flights
Seattle to Grimsby flights
Bellingham to Gatwick flights
Portland to Bristol flights
Portland to Southend flights
Seattle to Southend flights
Seattle to Darlington flights
Seattle to Newquay flights
Spokane to Manchester flights
Spokane to Southampton flights
Walla Walla to Heathrow flights

Top 2 airlines flying from Seattle to Southampton

Discover the top 2 airlines that operate flights from Seattle to Southampton. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$810Average$977FlexibilityNo cancel feeOn-time75%
DeltaCheapest$993Average$1,080FlexibilityNo cancel feeOn-timeN/A
San Francisco to London flights
Indianapolis to Las Vegas flights
Oakland, California to San Diego flights
Los Angeles to Boston flights
New York to Tampa flights
Dallas to Fort Lauderdale flights
New York John F Kennedy Intl Airport to Los Angeles flights
Memphis to Las Vegas flights
Philadelphia to Tampa flights
New York to Cancún flights
Boston to Toronto flights
Seattle to Springfield, Illinois flights

Search flights from Seattle to Southampton by cabin class

Find flights from Seattle to Southampton, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Gaziantep
Flights to Miyakojima Hirara
Flights to Figari-Sud Corse
Flights to Mason City
Flights to Komatsu
Flights to Sendai
Flights to Rhinelander Oneida County
Flights to Constanţa Mihail Kogalniceanu
Flights to Brainerd Crow Wing County
Flights to Reus
Flights to Virac
Flights to Neiva La Marguita
Flights to Pellston Emmet County
Flights to Urumqi
Flights to Bastia Poretta
Flights to Samos
Flights to Hyannis Barnstable
Flights to Provincetown
Flights to Alghero-Fertilia
Flights to Laayoune Hassan I
Flights to Devils Lake
Flights to Vava'u Lupepau'U
Flights to Hakodate
Flights to Edremit/Korfez
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines