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$647+ 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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOU
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$647
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$709
Provider with most accurate pricing for Seattle/Tacoma Intl-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-London (LON) flights.
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From Washington to Southampton Eastleigh
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Highest demand for flights based on searches. 22% potential increase in price ($232 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/76:45 pmSEA - SOU
1 stop16h 45mAer Lingus
Mon 4/149:40 amSOU - SEA
1 stop15h 19mAer Lingus
Deal found 2/21$647
This Mytrip deal was found by Cheapflights users on 2/21. 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.
Tue 4/13:45 pmSEA - SOU
2 stops19h 45mMultiple Airlines
Tue 4/88:00 pmSOU - SEA
2 stops29h 50mMultiple Airlines
Deal found 2/21$782
This KLM deal was found by Cheapflights users on 2/21. 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 4/72:10 pmSEA - SOU
1 stop34h 35mKLM
Mon 4/149:20 amSOU - SEA
1 stop34h 25mKLM
Deal found 2/21$830
This Delta deal was found by Cheapflights users on 2/21. 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 3/225:10 pmSEA - SOU
2 stops56h 15mDelta
Sun 3/306:25 pmSOU - SEA
1 stop29h 15mDelta
Deal found 2/21$882
This British Airways deal was found by Cheapflights users on 2/21. 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.
Mon 9/88:20 pmSEA - SOU
2 stops15h 05mBritish Airways
Wed 9/109:10 amSOU - SEA
1 stop15h 49mBritish Airways
Deal found 2/21$2,143

Find flights from Washington to Southampton within your budget

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 February 22, 2025.

Fly from

Washington

Fly to

Southampton

Route

Depart

Return

Price

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Mon 4/7

6:45 pm-7:30 pm

1 stop16h 45m

Southampton Eastleigh

Mon 4/14

9:40 am-4:59 pm

1 stop15h 19m

$647

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Tue 4/1

3:45 pm-7:30 pm

2 stops19h 45m

Southampton Eastleigh

Tue 4/8

8:00 pm-5:50 pm

2 stops29h 50m

$782

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Mon 4/7

2:10 pm-8:45 am

1 stop34h 35m

Southampton Eastleigh

Mon 4/14

9:20 am-11:45 am

1 stop34h 25m

$830

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sat 3/22

5:10 pm-8:25 am

2 stops56h 15m

Southampton Eastleigh

Sun 3/30

6:25 pm-3:40 pm

1 stop29h 15m

$882

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Fri 3/7

1:45 pm-1:05 pm

2 stops15h 20m

Southampton Eastleigh

Fri 3/14

9:30 am-7:15 pm

1 stop16h 45m

$2,312

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Wed 7/9

2:05 pm-8:45 am

1 stop34h 40m

$662

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Wed 7/9

6:05 am-8:45 am

2 stops18h 40m

$666

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Tue 7/8

12:19 am-8:40 am

2 stops24h 21m

$725

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

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.

Travel insights for flights from Washington to Southampton

Get recent, data-driven insights about flights from Washington to Southampton including ideal travel times, pricing trends, and more.

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 February 22, 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 February 22, 2025.
Delta
8.0
Very good
8,212 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

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
8,212 reviews
Delta
8.0
Very good
8,212 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

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
1,330 reviews
Delta
8.0
Very good
8,212 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

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
8,212 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

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
6,759 reviews
Delta
8.0
Very good
8,212 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

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.

  • What are the cheapest airlines to fly from State of Washington to Southampton one-way?

    The cheapest airline one-way is KLM, with whom users have recently found tickets for as low as $662. However, be on the lookout for offers from Delta and Aer Lingus, as they are both options that can get you from State of Washington to Southampton for a low price.

  • 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Washington to Southampton

Discover the top 2 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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$870Average$1,151FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$944Average$1,495FlexibilityNo cancel feeOn-time70%
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