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$372+ Cheap flights from Washington to Southampton (SOU)

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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOU
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Washington to Southampton

Keep the following information in mind while searching for Washington to Southampton flight deals. Data was last updated September 16, 2025.

Round-trip from

$833
(Delta)

One-way from

$372
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$697
From Washington to Southampton Eastleigh
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One-way flight from Washington to Southampton Eastleigh
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($138 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Washington to Southampton

Cheapest flights from Washington to Southampton
Explore the most affordable flight options available from Washington to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/173:00 pmSEA - SOU
1 stop33h 10mDelta
Wed 12/35:30 pmSOU - SEA
1 stop26h 20mDelta
Deal found 9/15$833
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:46 amSEA - SOU
2 stops21h 14mDelta
Tue 12/25:30 pmSOU - SEA
1 stop26h 20mDelta
Deal found 9/15$837
This KLM deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/45:45 amGEG - SOU
2 stops27h 15mKLM
Tue 11/118:40 amSOU - GEG
2 stops19h 23mKLM
Deal found 9/14$845
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2211:10 pmSEA - SOU
2 stops25h 00mDelta
Tue 12/25:30 pmSOU - SEA
2 stops29h 29mDelta
Deal found 9/15$847
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/173:00 pmSEA - SOU
1 stop18h 00mDelta
Thu 11/278:50 amSOU - SEA
2 stops34h 04mDelta
Deal found 9/15$849
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/183:00 pmSEA - SOU
1 stop18h 00mDelta
Thu 11/278:50 amSOU - SEA
2 stops36h 07mDelta
Deal found 9/16$850
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:20 amSEA - SOU
2 stops17h 00mDelta
Thu 11/278:50 amSOU - SEA
2 stops34h 04mDelta
Deal found 9/15$854
This Gurufare deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2812:34 amSEA - SOU
2 stops25h 11mAer Lingus
Wed 11/512:25 pmSOU - SEA
1 stop13h 55mAer Lingus
Deal found 9/13$856
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/304:00 pmSEA - SOU
1 stop18h 00mDelta
Thu 11/66:05 pmSOU - SEA
1 stop25h 40mDelta
Deal found 9/15$883
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3112:51 pmGEG - SOU
2 stops21h 09mDelta
Fri 11/78:40 amSOU - GEG
2 stops19h 06mDelta
Deal found 9/16$896
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:20 amSEA - SOU
2 stops17h 00mDelta
Mon 12/16:05 pmSOU - SEA
1 stop25h 45mDelta
Deal found 9/15$911
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/139:13 amGEG - SOU
2 stops23h 47mDelta
Wed 11/198:40 amSOU - GEG
2 stops19h 23mDelta
Deal found 9/15$935

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Washington to Southampton that are best for you.

Fly from

Washington

Fly to

Southampton

Route

Depart

Return

Price

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Tue 11/18

3:00 pm-8:20 am

1 stop33h 20m

Southampton Eastleigh

Tue 12/2

5:30 pm-11:50 am

1 stop26h 20m

$833

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Wed 10/29

4:00 pm-5:25 pm

1 stop18h 25m

Southampton Eastleigh

Wed 11/5

5:30 pm-11:45 am

1 stop26h 15m

$833

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Mon 11/17

3:00 pm-8:10 am

1 stop33h 10m

Southampton Eastleigh

Wed 12/3

5:30 pm-11:50 am

1 stop26h 20m

$833

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sun 11/23

3:00 pm-8:10 am

1 stop33h 10m

Southampton Eastleigh

Tue 12/2

5:30 pm-11:50 am

1 stop26h 20m

$833

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Tue 11/18

3:00 pm-8:20 am

1 stop33h 20m

Southampton Eastleigh

Wed 12/3

5:30 pm-11:50 am

1 stop26h 20m

$833

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Mon 11/17

3:00 pm-5:00 pm

1 stop18h 00m

Southampton Eastleigh

Tue 12/2

5:30 pm-11:50 am

1 stop26h 20m

$833

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sat 11/22

11:10 pm-8:10 am

2 stops25h 00m

Southampton Eastleigh

Wed 12/3

5:30 pm-11:50 am

1 stop26h 20m

$837

SpokaneSouthampton

GEG - SOU

GEGSOU

Spokane

Tue 11/4

5:45 am-5:00 pm

2 stops27h 15m

Southampton Eastleigh

Tue 11/11

8:40 am-8:03 pm

2 stops19h 23m

$845

SpokaneSouthampton

GEG - SOU

GEGSOU

Spokane

Tue 11/4

5:45 am-8:10 am

2 stops18h 25m

Southampton Eastleigh

Tue 11/11

8:40 am-8:03 pm

2 stops19h 23m

$845

SpokaneSouthampton

GEG - SOU

GEGSOU

Spokane

Fri 10/31

12:51 pm-5:00 pm

2 stops21h 09m

Southampton Eastleigh

Fri 11/7

8:40 am-7:46 pm

2 stops19h 06m

$896

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 21 results
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Best time to book a flight from Washington to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Washington 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.

Cheapflights Insights

Everything you need to know about your flight from Washington to Southampton

What is the cheapest month to book a flight from State of Washington to Southampton?

Currently, November is the cheapest month in which you can book a flight from State of Washington to Southampton (average of $787). Flying from State of Washington to Southampton in June is currently the most expensive (average of $1,308). 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.

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

Find hourly flight availability from Washington to Southampton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from State of Washington to Southampton, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

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

  • What airport do you fly into for flights to Southampton from Washington?

    If you book a flight to Southampton from Washington, you will be flying to Eastleigh, which is the city’s only airport. Southampton Eastleigh (SOU) is located 3.5 mi from the center of Southampton.

  • How long is the flight from State of Washington to Southampton?

    Departing from State of Washington to Southampton will take you 27h 15m. The distance from State of Washington to Southampton is about 4645 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington 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.

  • What is the cheapest month to book a flight from State of Washington to Southampton?

    Currently, November is the cheapest month in which you can book a flight from State of Washington to Southampton (average of $787). Flying from State of Washington to Southampton in June is currently the most expensive (average of $1,308). 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

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Alternative routes for Washington to Southampton

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Top airline flying from Washington to Southampton

Discover the top airline that operate flights from Washington 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 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$840Average$1,281FlexibilityNo cancel feeOn-time75%

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