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Cheap flights from Washington, D.C. Dulles Intl Airport to Southampton from £231

IAD — SOU
20 Oct — 27 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Southampton

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl to Southampton

Mon 2/1117:15 -
1 stop10h 35m
Mon 9/1109:20 -
1 stop15h 00m
Deal found 18/9£555
Mon 2/1119:40 -
2 stops18h 50m
Mon 9/1117:45 -
3 stops29h 45m
Deal found 18/9£574
Sat 31/1020:40 -
2 stops15h 05m
Sat 7/1109:20 -
1 stop11h 25m
Deal found 16/9£731
Mon 19/1012:30 -
2 stops15h 05m
Wed 4/1117:35 -
1 stop27h 10m
Deal found 19/9£736
Mon 26/1019:15 -
1 stop17h 50m
Wed 11/1117:35 -
1 stop27h 10m
Deal found 17/9£737

Find flight deals from Dulles Intl to Southampton

Round-trip from

£555

One-way from

£231

Popular in

June

Cheapest in

February

Average price

£691
Aer Lingus
  • Aer Lingus
  • 2/11-9/11
  • 2 total stops
  • 25h 35m total
  • Washington, D.C. to Southampton
Search Deals
3/10-31/12
  • 3/10-31/12
  • 2 total stops
  • 40h 15m total
  • Washington, D.C. to Southampton
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£104 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Southampton that are best for you.

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Depart

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Price

Cheapest return flight

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Sat 3/10

11:25-08:40

2 stops40h 15m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£231

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Tue 27/10

20:40-08:40

2 stops32h 00m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£287

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Fri 23/10

15:50-19:30

3 stops22h 40m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£314

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Mon 8/3

20:50-08:50

1 stop31h 00m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£422

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Wed 21/10

17:15-08:40

1 stop10h 25m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£424

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Tue 13/10

21:05-19:30

1 stop17h 25m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£425
Fastest return journey

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Thu 22/10

17:30-08:35

1 stop10h 05m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£434

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Thu 15/10

17:30-08:35

1 stop10h 05m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£434

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Wed 16/12

20:50-08:50

1 stop31h 00m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£458

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Mon 19/10

18:10-16:50

1 stop17h 40m

Southampton Eastleigh

Wed 4/11

08:40-15:55

1 stop12h 15m

£736

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 15 resultsSorted by cheapest first
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Best time to book a flight from Dulles Intl to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Dulles Intl with our price prediction graph.
Estimated return price

Related info for your journey

  • What airport do you fly into for flights to Southampton from Washington, D.C. Dulles Intl?

    Most people fly into Southampton Eastleigh (SOU) if they book a flight to Southampton from Washington, D.C. Dulles Intl. On average, Eastleigh has 0 inbound flights from Washington, D.C. Dulles Intl per day from 0 airlines. Southampton Eastleigh is conveniently located just 3.5 mi from Southampton’s city center.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Southampton?

    Departing from Washington, D.C. Dulles Intl Airport to Southampton will take you 17h 40m. Airlines will cover a distance of 3639 mi.

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

    Yes. In addition to deals on Dulles Intl to Southampton flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Southampton?

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl 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.

See more FAQs

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Cheapflights makes it easy to find Dulles Intl to Southampton flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Southampton?

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 Southampton from Dulles Intl.

Can Cheapflights find flights from Dulles Intl to Southampton with no change fees?

Certainly. Search results for flights to Southampton from Dulles Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Dulles Intl to Southampton become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Southampton from Dulles Intl today and book when prices fit your budget.

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