Cheap flights from Southampton to Washington, D.C. from £348
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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Southampton to Washington, D.C.
Discover tips and strategies to find the most affordable flight options for your journey from Southampton (SOU) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 8 July 2025.
Round-trip from | £689 |
---|---|
One-way from | £348 |
Popular in | July |
Cheapest in | February |
Average price | £656 |
Find flight deals from Southampton to Washington, D.C.
Cheapest flights from Southampton to Washington, D.C.Explore the most affordable flight options available from Southampton to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 July 2025.
Explore the most affordable flight options available from Southampton to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Southampton to Washington, D.C. 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 8 July 2025.
Use the filters below to find and compare flights from Southampton to Washington, D.C. that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Tue 19/8
09:10-19:59
2 stops15h 49m
Washington, D.C. Dulles Intl
Tue 26/8
22:05-08:45
3 stops29h 40m
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Tue 19/8
09:10-19:30
1 stop15h 20m
Washington, D.C. Dulles Intl
Tue 26/8
17:20-08:05
1 stop9h 45m
SouthamptonBaltimore
SOU - BWI
SOUBWI
Southampton Eastleigh
Wed 20/8
09:10-19:25
2 stops15h 15m
Baltimore/Washington
Wed 27/8
20:30-19:30
2 stops18h 00m
SouthamptonWashington, D.C.
SOU - DCA
SOUDCA
Southampton Eastleigh
Wed 20/8
20:00-18:02
2 stops27h 02m
Washington, D.C. Reagan-National
Wed 27/8
09:40-19:30
2 stops28h 50m
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Wed 20/8
09:20-15:35
1 stop11h 15m
Washington, D.C. Dulles Intl
Wed 27/8
17:25-08:45
1 stop10h 20m
SouthamptonBaltimore
SOU - BWI
SOUBWI
Southampton Eastleigh
Sun 24/8
21:30-11:44
3 stops43h 14m
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Sun 24/8
14:50-14:56
3 stops29h 06m
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Sun 24/8
20:00-18:55
1 stop27h 55m
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Sun 5/10
18:25-15:35
1 stop26h 10m
SouthamptonWashington, D.C.
SOU - DCA
SOUDCA
Southampton Eastleigh
Sun 5/10
18:25-18:31
2 stops29h 06m
Best time to book a flight from Southampton to Washington, D.C.
Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Southampton with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Southampton to Washington, D.C.
What is the cheapest month to book a flight from Southampton to Washington, D.C.?
Currently, January is the cheapest month in which you can book a flight from Southampton to Washington, D.C. (average of £599). Flying from Southampton to Washington, D.C. in July is currently the most expensive (average of £947). 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, D.C.
Get insights into the airlines that provide service to Washington, D.C.. 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, D.C.. Reviews last updated 8 July 2025.
Read reviews from past customers who have flown with Delta, KLM, andAer Lingus from Southampton to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Overall
Crew
Boarding
Entertainment
Comfort
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Crew
Boarding
Entertainment
Comfort
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Crew
Boarding
Entertainment
Comfort
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Crew
Boarding
Entertainment
Comfort
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from Southampton to Washington, D.C.. 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, D.C.
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How does Cheapflights help users find flights from Southampton to Washington, D.C.?
Deals for Southampton to Washington, D.C. flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Southampton to Washington, D.C.?
Cheapflights helps you find that perfect flight to Washington, D.C. from Southampton by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Southampton to Washington, D.C. with no change fees?
Yes, we can. To see specific flights from Southampton to Washington, D.C. with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Southampton to Washington, D.C. become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!