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$643+ Cheap flights from Southampton (SOU) to Washington

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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — SEA
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
1 adult, Economy
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Cheap flight deals from Southampton to Washington

Keep the following information in mind while searching for Southampton to Washington flight deals. Data was last updated julio 30, 2025.

Round-trip from

$852
(Trip.com)

One-way from

$643
(Justfly.com)

Popular in

July

Cheapest in

January

Average price

$950
From Southampton Eastleigh to Washington
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One-way flight from Southampton Eastleigh to Washington
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Highest demand for flights based on searches. 15% potential increase in price ($132 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Southampton to Washington

Cheapest flights from Southampton to Washington
Explore the most affordable flight options available from Southampton to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.

This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/139:40 amSOU - SEA
2 stops16h 10mMultiple Airlines
sáb. 9/203:45 pmSEA - SOU
2 stops33h 25mMultiple Airlines
Deal found 7/30$852
This KLM deal was found by Cheapflights users on 7/30. 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.
sáb. 9/136:05 pmSOU - SEA
1 stop30h 00mKLM
sáb. 9/205:40 pmSEA - SOU
1 stop31h 05mKLM
Deal found 7/30$916
This British Airways deal was found by Cheapflights users on 7/28. 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.
mié. 8/137:55 pmSOU - SEA
2 stops23h 40mBritish Airways
dom. 8/171:30 pmSEA - SOU
2 stops18h 30mBritish Airways
Deal found 7/28$1,259
This Delta deal was found by Cheapflights users on 7/30. 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.
jue. 7/319:20 amSOU - SEA
2 stops17h 35mDelta
mar. 8/55:40 pmSEA - SOU
1 stop16h 10mDelta
Deal found 7/30$2,249

Cheapflights Fare Finder

 
Customize your flight search to find flights from Southampton to Washington 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 julio 30, 2025.
Use the filters below to find and compare flights from Southampton to Washington that are best for you.

Fly from

Southampton

Fly to

Washington

Route

Depart

Return

Price

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

sáb. 9/13

9:40 am-5:50 pm

2 stops16h 10m

Seattle/Tacoma Intl

sáb. 9/20

3:45 pm-9:10 am

2 stops33h 25m

$852

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

sáb. 9/13

6:05 pm-4:05 pm

1 stop30h 00m

Seattle/Tacoma Intl

sáb. 9/20

5:40 pm-8:45 am

1 stop31h 05m

$916

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

mié. 8/13

7:55 pm-11:35 am

2 stops23h 40m

Seattle/Tacoma Intl

dom. 8/17

1:30 pm-4:00 pm

2 stops18h 30m

$1,259

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

dom. 9/7

8:00 pm-5:50 pm

1 stop29h 50m

$643

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

dom. 11/30

7:55 pm-4:55 pm

2 stops29h 00m

$1,150

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Southampton to Washington

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

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

Currently, January is the cheapest month in which you can book a flight from Southampton to State of Washington (average of $238). Flying from Southampton to State of Washington in June is currently the most expensive (average of $389). 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.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated julio 30, 2025.
Read reviews from past customers who have flown KLM, Aer Lingus, and British Airways from Southampton to Washington. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,383 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,383 reviews
KLM
7.8
Good
1,383 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Aer Lingus
7.1
Good
1,191 reviews
KLM
7.8
Good
1,383 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
British Airways
6.6
Okay
7,217 reviews
KLM
7.8
Good
1,383 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Southampton to Washington. 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 from for flights from Southampton to Washington?

    Most people fly from Southampton Eastleigh (SOU) if they book a flight from Southampton to Washington. Southampton Eastleigh is conveniently located just 3.5 mi from Southampton’s city center.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Southampton to Washington 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 Southampton to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Southampton to State of Washington (average of $238). Flying from Southampton to State of Washington in June is currently the most expensive (average of $389). 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.

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