Cheap flights from Southampton to Washington from £442
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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
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 26 August 2025.
Find flight deals from Southampton to Washington
Cheapest flights from Southampton to WashingtonExplore 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 26 August 2025.
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 26 August 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Southampton to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
SouthamptonSeattle
SOU - SEA
SOUSEA
Southampton Eastleigh
Sat 13/9
09:40-17:50
1 stop16h 10m
Seattle/Tacoma Intl
Sat 20/9
19:35-19:30
1 stop15h 55m
SouthamptonSeattle
SOU - SEA
SOUSEA
Southampton Eastleigh
Sun 7/9
09:10-17:50
1 stop16h 40m
SouthamptonSeattle
SOU - SEA
SOUSEA
Southampton Eastleigh
Mon 17/11
09:30-18:20
1 stop16h 50m
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.
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 £622). Flying from Southampton to State of Washington in July is currently the most expensive (average of £946). 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.
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.
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Alternative routes for Southampton to Washington
See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from Southampton to Washington?
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Why should you use Cheapflights to find cheap flight tickets from Southampton to Washington?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Washington from Southampton.
Can Cheapflights find flights from Southampton to Washington with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Southampton to Washington, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Southampton to Washington become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington from Southampton today and book when prices fit your budget.