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Cheap flights from Washington, D.C. Dulles Intl Airport to Southampton from £358

IAD — SOU
30 Nov — 7 Dec1
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 14/1217:15 -
1 stop21h 15m
Mon 21/1209:20 -
1 stop15h 00m
Deal found 30/10£806
Mon 14/1209:55 -
2 stops28h 35m
Mon 21/1212:25 -
2 stops33h 35m
Deal found 30/10£836
Fri 11/1217:15 -
1 stop10h 30m
Fri 18/1213:25 -
2 stops31h 20m
Deal found 27/10£877
Fri 11/1217:15 -
1 stop10h 30m
Fri 18/1220:00 -
1 stop24h 45m
Deal found 27/10£975
Fri 27/1120:50 -
1 stop10h 05m
Tue 1/1220:00 -
1 stop28h 20m
Deal found 30/10£1,046
Tue 24/1120:50 -
1 stop31h 00m
Tue 1/1220:00 -
1 stop28h 20m
Deal found 30/10£1,073

Find flight deals from Dulles Intl to Southampton

Round-trip from

£743

One-way from

£358

Popular in

June

Cheapest in

February

Average price

£690
Aer Lingus
  • Aer Lingus
  • 15/4-23/4
  • 2 total stops
  • 21h 50m total
  • Washington, D.C. to Southampton
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Aer Lingus
  • Aer Lingus
  • 9/11-31/12
  • 1 total stop
  • 10h 35m total
  • Washington, D.C. to Southampton
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£93 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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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Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Mon 9/11

17:15-08:50

1 stop10h 35m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£358

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Mon 9/11

19:40-19:10

3 stops18h 30m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£418

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Wed 2/12

20:50-08:50

1 stop31h 00m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£560

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Fri 13/11

20:50-08:45

1 stop30h 55m

Southampton Eastleigh

Wed 31/12

00:00-18:00

Nonstop0h 00m

£599

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Thu 11/3

19:40-07:45

2 stops31h 05m

Southampton Eastleigh

Sat 20/3

09:20-16:45

1 stop11h 25m

£821

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Fri 11/12

17:15-08:45

1 stop10h 30m

Southampton Eastleigh

Fri 18/12

13:25-15:45

2 stops31h 20m

£877

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Thu 11/3

10:05-08:10

2 stops17h 05m

Southampton Eastleigh

Sat 20/3

09:25-23:02

2 stops17h 37m

£986

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Wed 16/12

11:30-17:05

2 stops24h 35m

Southampton Eastleigh

Mon 4/1

17:30-18:05

2 stops29h 35m

£1,558

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Sun 20/12

17:45-17:05

1 stop18h 20m

Southampton Eastleigh

Fri 1/1

08:40-15:55

1 stop12h 15m

£1,660

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Sat 19/12

21:45-20:20

2 stops17h 35m

Southampton Eastleigh

Sat 2/1

09:20-19:20

1 stop15h 00m

£3,225

Flights are sorted by cheapest return flights first.

Deals found on 29/10

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 05m. 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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