HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Southampton

$900+ Cheap flights from Washington to Southampton (SOU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOU
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Southampton with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 25, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$900
(Delta)

Popular in

June

Cheapest in

October

Average price

$684
Provider with most accurate pricing for Seattle/Tacoma Intl-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-London (LON) flights.
Search Deals
From Washington to Southampton Eastleigh
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($176 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 April 25, 2025.

This Delta deal was found by Cheapflights users on 4/25. 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 9/231:55 pmSEA - SOU
1 stop19h 05mDelta
Wed 10/15:35 pmSOU - SEA
1 stop26h 15mDelta
Deal found 4/25$900
This Mytrip deal was found by Cheapflights users on 4/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/95:30 amSEA - SOU
3 stops29h 55mMultiple Airlines
Mon 6/168:05 amSOU - SEA
3 stops38h 58mMultiple Airlines
Deal found 4/24$930
This Gotogate deal was found by Cheapflights users on 4/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/97:35 pmSEA - SOU
1 stop15h 55mAer Lingus
Mon 6/165:15 pmSOU - SEA
1 stop32h 35mAer Lingus
Deal found 4/25$1,128
This KLM deal was found by Cheapflights users on 4/25. 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.
Mon 6/92:10 pmSEA - SOU
1 stop18h 50mKLM
Mon 6/169:20 amSOU - SEA
1 stop34h 20mKLM
Deal found 4/25$1,259
This British Airways deal was found by Cheapflights users on 4/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/261:30 pmSEA - SOU
2 stops15h 50mBritish Airways
Sat 10/49:40 amSOU - SEA
1 stop16h 10mBritish Airways
Deal found 4/25$2,379

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 April 25, 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 9/23

1:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Tue 10/7

5:35 pm-11:50 am

1 stop26h 15m

$900

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Mon 6/9

5:30 am-7:25 pm

3 stops29h 55m

Southampton Eastleigh

Mon 6/16

8:05 am-3:03 pm

3 stops38h 58m

$930

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Mon 6/9

7:35 pm-7:30 pm

1 stop15h 55m

Southampton Eastleigh

Mon 6/16

5:15 pm-5:50 pm

1 stop32h 35m

$1,128

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Mon 6/9

2:10 pm-5:00 pm

1 stop18h 50m

Southampton Eastleigh

Mon 6/16

9:20 am-11:40 am

1 stop34h 20m

$1,259

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Fri 9/26

1:30 pm-1:20 pm

2 stops15h 50m

Southampton Eastleigh

Sat 10/4

9:40 am-5:50 pm

1 stop16h 10m

$2,379

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

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 April 25, 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.

Rainfall in Southampton by month

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

In terms of precipitation, rainfall in Southampton ranges from 1.0 - 3.0 inches per month. December is typically the wettest month, when rainfall can reach 3.0 in. July is typically the driest time to visit Southampton when rainfall is around 1.0 in.

Temperature in Southampton by month

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

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 April 25, 2025.
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,070 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.6
Okay
6,815 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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

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 Washington to Southampton

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Gatwick flights
LaGuardia to Heathrow flights
Dulles Intl to Heathrow flights
Los Angeles to Heathrow flights
John F Kennedy Intl to London City flights
Boston to Heathrow flights
San Francisco to Heathrow flights
Newark to Gatwick flights
O'Hare Intl to Heathrow flights
Baltimore to Heathrow flights
Seattle to Heathrow flights
Dallas/Fort Worth to Heathrow flights
LaGuardia to Gatwick flights
Newark to London City flights
Atlanta to Heathrow flights
Boston to Gatwick flights
Miami to Heathrow flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
Denver to Heathrow flights
Orlando to Heathrow flights
Dulles Intl to London City flights
John F Kennedy Intl to Stansted flights
Hobby to Heathrow flights
Boston to London City flights
Los Angeles to London City flights
Reagan-National to Gatwick flights
Baltimore to Gatwick flights
Stewart to Stansted flights
Philadelphia to Heathrow flights
John F Kennedy Intl to Edinburgh flights
San Francisco to Gatwick flights
Los Angeles to Gatwick flights
O'Hare Intl to Gatwick flights
San Francisco to London City flights
George Bush Intcntl to Heathrow flights
Orlando to Gatwick flights
O'Hare Intl to London City flights
Austin to Heathrow flights
John F Kennedy Intl to Luton flights
Seattle to Gatwick flights
Dallas/Fort Worth to Gatwick flights
Tampa to Heathrow flights
Sky Harbor Intl to Heathrow flights
Minneapolis to Heathrow flights
Portland to Heathrow flights
Newark to Edinburgh flights
Boston to Edinburgh flights

Top 3 airlines flying from Washington to Southampton

Discover the top 3 airlines 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 April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$738Average$1,151FlexibilityNo cancel feeOn-time75%
DeltaCheapest$794Average$865FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$944Average$1,495FlexibilityNo cancel feeOn-time70%

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.