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Cheap flights from Washington to Southampton from £253

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 26/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOU
18 Jun — 25 Jun1
1 adult

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 13 June 2025.

Round-trip from

£723

One-way from

£253

Popular in

June

Cheapest in

January

Average price

£757
26/7-2/8
  • 26/7-2/8
  • 4 total stops
  • 38h 15m total
  • Washington to Southampton
Search Deals
26/7
  • 26/7
  • 2 total stops
  • 49h 10m total
  • Washington to Southampton
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£79 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 13 June 2025.

Sat 26/719:00SEA - SOU
2 stops18h 00mMultiple Airlines
Sat 2/808:25SOU - SEA
2 stops20h 15mMultiple Airlines
Deal found 11/6£723
Sat 26/719:35SEA - SOU
1 stop29h 35mAer Lingus
Sat 2/816:25SOU - SEA
1 stop33h 25mAer Lingus
Deal found 11/6£797
Sat 5/722:15SEA - SOU
2 stops26h 30mDelta
Tue 15/718:25SOU - SEA
1 stop25h 10mDelta
Deal found 11/6£932
Tue 23/920:20SEA - SOU
2 stops15h 05mBritish Airways
Wed 8/1009:10SOU - SEA
1 stop16h 40mBritish Airways
Deal found 10/6£1,650

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 13 June 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

Sat 26/7

19:00-21:00

2 stops18h 00m

Southampton Eastleigh

Sat 2/8

08:25-20:40

2 stops20h 15m

£723

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sat 26/7

19:35-09:10

1 stop29h 35m

Southampton Eastleigh

Sat 2/8

16:25-17:50

1 stop33h 25m

£797

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sat 5/7

22:15-08:45

2 stops26h 30m

Southampton Eastleigh

Tue 15/7

18:25-11:35

1 stop25h 10m

£932

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Tue 23/9

20:20-19:25

2 stops15h 05m

Southampton Eastleigh

Wed 8/10

09:10-17:50

1 stop16h 40m

£1,650

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sat 26/7

23:30-08:40

2 stops49h 10m

£253

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sat 26/7

19:35-09:10

1 stop29h 35m

£380

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sun 21/9

13:55-08:45

1 stop34h 50m

£405

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

Sat 1/11

16:00-08:25

1 stop33h 25m

£458

Flights are sorted by cheapest return flights first.

Deals found on 11/6

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 return 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, September is the cheapest month in which you can book a flight from State of Washington to Southampton (average of £203). Flying from State of Washington to Southampton in November is currently the most expensive (average of £262). 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.

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 25.0 - 76.0 inches per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Southampton when rainfall is around 25.0 mm.

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 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

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 13 June 2025.
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very Good
7,950 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Aer Lingus
7.1
Good
1,118 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.6
Okay
7,011 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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?

    Southampton Eastleigh (SOU), located 3.5 mi from the city center, is the airport you fly into when you book flights from Washington to Southampton.

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

    For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as £380. Users have also found prices from £405 and £458 on Delta and KLM, respectively.

  • 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 holiday 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, September is the cheapest month in which you can book a flight from State of Washington to Southampton (average of £203). Flying from State of Washington to Southampton in November is currently the most expensive (average of £262). 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

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