IAD - SOU

£431 Find Cheap Flights from Washington, D.C. to Southampton – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
£663
Typical prices: £796-£1,006
Aer Lingus
Sat 20/10Sat 27/10
IAD - SOU • 1 stop
Cheapest one-way flight
£431
Typical prices: £469-£526
Delta
Wed 3/10
IAD - SOU • 1 stop
When to travel
March
Cheapest • 16% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Dublin (DUB)
Cheapest • Avg £858 (return)
Amsterdam Schiphol (AMS)
Shortest trip • 10h 43m (one-way)
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Flight Deals

Cheap Flights from Washington, D.C. to Southampton (IAD-SOU)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Washington, D.C. to Southampton

Tue, 20 Oct - Tue, 27 Oct
Aer Lingus Logo
21:05 - 19:30IAD  Washington, D.C. Dulles Intl-SOU Southampton Eastleigh
17h 25m1 stop Dublin
Aer Lingus Logo
09:20 - 20:20SOU  Southampton Eastleigh-IAD Washington, D.C. Dulles Intl
15h 00m1 stop Dublin
£663Aer Lingus
Tue, 20 Oct - Tue, 27 Oct
Multiple Airlines Logo
21:05 - 08:35IAD  Washington, D.C. Dulles Intl-SOU Southampton Eastleigh
30h 30m2 stops Dublin Palma de Mallorca Son Sant Joan
Multiple Airlines Logo
09:20 - 16:45SOU  Southampton Eastleigh-IAD Washington, D.C. Dulles Intl
11h 25m1 stop Dublin
£739Multiple Airlines
Thu, 22 Oct - Thu, 29 Oct
Multiple Airlines Logo
09:55 - 16:50IAD  Washington, D.C. Dulles Intl-SOU Southampton Eastleigh
25h 55m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
09:20 - 20:20SOU  Southampton Eastleigh-IAD Washington, D.C. Dulles Intl
15h 00m1 stop Dublin
£758Multiple Airlines
Thu, 22 Oct - Thu, 29 Oct
Multiple Airlines Logo
09:55 - 16:50IAD  Washington, D.C. Dulles Intl-SOU Southampton Eastleigh
25h 55m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
20:00 - 16:45SOU  Southampton Eastleigh-IAD Washington, D.C. Dulles Intl
24h 45m1 stop Dublin
£777Multiple Airlines
Thu, 22 Oct - Thu, 29 Oct
Multiple Airlines Logo
09:55 - 19:30IAD  Washington, D.C. Dulles Intl-SOU Southampton Eastleigh
28h 35m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
13:55 - 16:45SOU  Southampton Eastleigh-IAD Washington, D.C. Dulles Intl
30h 50m2 stops Glasgow Intl Dublin
£790Multiple Airlines
Wed, 25 Nov - Wed, 2 Dec
Delta Logo
18:15 - 17:05IAD  Washington, D.C. Dulles Intl-SOU Southampton Eastleigh
17h 50m1 stop Amsterdam Schiphol
Delta Logo
17:30 - 15:45SOU  Southampton Eastleigh-IAD Washington, D.C. Dulles Intl
27h 15m1 stop Amsterdam Schiphol
£824Delta
Tue, 20 Oct - Tue, 27 Oct
Multiple Airlines Logo
20:30 - 19:25IAD  Washington, D.C. Dulles Intl-SOU Southampton Eastleigh
17h 55m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Edinburgh Turnhouse
Multiple Airlines Logo
09:20 - 16:45SOU  Southampton Eastleigh-IAD Washington, D.C. Dulles Intl
11h 25m1 stop Dublin
£825Multiple Airlines
Wed, 25 Nov - Wed, 2 Dec
Delta Logo
10:11 - 08:10IAD  Washington, D.C. Dulles Intl-SOU Southampton Eastleigh
16h 59m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol
Delta Logo
17:30 - 15:45SOU  Southampton Eastleigh-IAD Washington, D.C. Dulles Intl
27h 15m1 stop Amsterdam Schiphol
£828Delta
Wed, 25 Nov - Tue, 1 Dec
Delta Logo
12:35 - 08:10IAD  Washington, D.C. Dulles Intl-SOU Southampton Eastleigh
14h 35m2 stops New York John F Kennedy Intl Amsterdam Schiphol
Delta Logo
08:40 - 15:45SOU  Southampton Eastleigh-IAD Washington, D.C. Dulles Intl
12h 05m1 stop Amsterdam Schiphol
£854Delta
Thu, 22 Oct - Thu, 29 Oct
Multiple Airlines Logo
09:55 - 16:50IAD  Washington, D.C. Dulles Intl-SOU Southampton Eastleigh
25h 55m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
08:55 - 20:55SOU  Southampton Eastleigh-IAD Washington, D.C. Dulles Intl
16h 00m2 stops Edinburgh Turnhouse London Heathrow
£858Multiple Airlines
Booking Insights

Price, demand, and travel trends for Washington, D.C. Dulles Intl Airport to Southampton flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Washington, D.C. Dulles Intl Airport to Southampton with more confidence.

How much is a return flight from Washington, D.C. Dulles Intl Airport to Southampton?

Return flights from Washington, D.C. Dulles Intl Airport to Southampton start at £663. Prices are below average for this route right now, with typical return fares ranging from £796 to £1,006. The lowest price found in the past 5 days was £663 on Aer Lingus.

What's the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Southampton?

Wednesday is the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Southampton and is 4% cheaper than the average day. Friday is the most expensive day with flight prices 39% higher than average. Based on deals found by KAYAK users in the last 12 months.

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Key details for Washington, D.C. Dulles Intl Airport to Southampton flights

Low season

January

Cheapest flight

£431
Most popular time to fly (40% more expensive on average)
Flights from Washington, D.C. Dulles Intl Airport to Southampton

When to book flights from Washington, D.C. to Southampton

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Southampton based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Washington, D.C. Dulles Intl Airport to Southampton flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which airports can I use when flying from Washington, D.C. Dulles Intl Airport to Southampton?

    Flights from Washington, D.C. Dulles Intl Airport to Southampton usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Southampton Eastleigh (SOU).

  • Which airports do connecting flights from Washington, D.C. Dulles Intl Airport to Southampton pass through?

    Connecting flights from Washington, D.C. Dulles Intl Airport to Southampton most commonly pass through:

    • Dublin (DUB) – 55% of one-stop connections
    • Amsterdam Schiphol (AMS) – 45% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

  • Can I save money by using flexible dates for flights from Washington, D.C. Dulles Intl Airport to Southampton?

    Yes. Being flexible with your travel dates can save you up to 31% on the Washington, D.C. Dulles Intl Airport to Southampton route. Wednesday is the cheapest departure day at £796 return on average, while Friday is the most expensive at £1,152, a difference of £356. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Southampton?

    Some of the most popular sights in Southampton are Mayflower Theatre, Southampton Central Railway Station, and WestQuay Shopping Centre. These are among the most viewed places in Southampton on KAYAK.

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

    There are currently no direct flights available from Washington, D.C. Dulles Intl Airport to Southampton. Flights with 1 stopover take between 10h 43m and 11h 28m in total, depending on the connection.

  • Do I need a passport to fly from Washington, D.C. Dulles Intl Airport to Southampton?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Washington, D.C. Dulles Intl Airport to Southampton looking right now?

    One-way fares from Washington, D.C. Dulles Intl Airport to Southampton are currently higher than usual. Average one-way flight prices are about £514, which is 9% above the typical average for this route.

  • How much time can I save by choosing a different stopover airport from Washington, D.C. Dulles Intl Airport to Southampton?

    Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time of 10h 43m, compared to 11h 28m via Dublin (DUB).

  • What is the time difference between Washington, D.C. Dulles Intl Airport and Southampton?

    Southampton is 5 hours ahead of Washington, D.C. Dulles Intl Airport (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which car hire options are available at Southampton Eastleigh Airport (SOU)?

    Southampton Eastleigh Airport (SOU) hosts 5 major car hire companies, with daily rates starting from around £10 for economy cars. Top options include:
    · Alamo
    · Budget
    · Avis
    · Enterprise Rent-A-Car
    · Sixt

  • How much should I expect to pay for a Washington, D.C. Dulles Intl Airport to Southampton flight?

    Return flights from Washington, D.C. Dulles Intl Airport to Southampton range from £796 to £1,006, with an average of £824 over the past 12 months. Anything below £796 counts as a good deal.

Your guide to booking Washington, D.C. Dulles Intl Airport to Southampton flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure instead of Friday. On this route, Wednesday flights average £796 – about £356 less than Friday (31% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Washington, D.C. Dulles Intl Airport to Southampton trip for March. Fares historically average £691 return in that month – typically £2,833 less than the most expensive month, which is October (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Southampton Eastleigh Airport.
    - DoubleTree by Hilton Southampton
    - Premier Inn Southampton Airport

More options for your flight from Washington, D.C. to Southampton

Complete your trip to Southampton with a hotel stay or car hire

Car hire in Southampton
Hotels in Southampton
Holidays in Southampton