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Cheap flights from Washington, D.C. Dulles Intl Airport to Southampton from £623

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/10. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SOU
26 Feb — 5 Mar1
1 adult

Cheap flight deals from Dulles Intl to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Southampton (SOU). 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 21 February 2025.

Round-trip from

£623

Popular in

July

Cheapest in

November

Average price

£577
KLM
  • KLM
  • 6/4-13/4
  • 2 total stops
  • 36h 30m total
  • Washington, D.C. to Southampton
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Dulles Intl to Southampton

Cheapest flights from Dulles Intl to Southampton
Explore the most affordable flight options available from Dulles Intl to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Mon 13/1017:25IAD - SOU
1 stop10h 20mDelta
Sun 26/1009:30SOU - IAD
1 stop11h 15mDelta
Deal found 20/2£623
Wed 15/1017:25IAD - SOU
1 stop10h 20mKLM
Sun 26/1009:30SOU - IAD
1 stop11h 15mKLM
Deal found 20/2£672
Sun 6/420:30IAD - SOU
2 stops13h 25mMultiple Airlines
Sun 13/420:00SOU - IAD
3 stops30h 15mMultiple Airlines
Deal found 19/2£740
Wed 15/1021:00IAD - SOU
1 stop17h 30mAer Lingus
Tue 28/1009:30SOU - IAD
1 stop11h 10mAer Lingus
Deal found 20/2£947
Fri 28/218:00IAD - SOU
2 stops14h 05mBritish Airways
Sun 2/309:30SOU - IAD
1 stop11h 10mBritish Airways
Deal found 19/2£1,593

Find flights from Dulles Intl to Southampton within your budget

Customise your flight search to find flights from Dulles Intl to Southampton 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 21 February 2025.

Fly from

Dulles Intl

Fly to

Southampton

Route

Depart

Return

Price

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 6/4

17:25-08:45

1 stop10h 20m

Southampton Eastleigh

Sun 13/4

18:25-15:35

1 stop26h 10m

£623

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 6/4

12:11-08:45

2 stops15h 34m

Southampton Eastleigh

Sun 13/4

09:20-15:35

1 stop11h 15m

£705

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 6/4

20:30-14:55

2 stops13h 25m

Southampton Eastleigh

Sun 13/4

20:00-21:15

3 stops30h 15m

£740

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Fri 28/2

18:00-13:05

2 stops14h 05m

Southampton Eastleigh

Sun 2/3

09:30-15:40

1 stop11h 10m

£1,593

Flights are sorted by cheapest return flights first.

Deals found on 19/2

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Dulles Intl to Southampton

Get recent, data-driven insights about flights from Dulles Intl to Southampton including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Southampton?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Southampton (average of £203). Flying from Washington, D.C. Dulles Intl Airport to Southampton in November is currently the most expensive (average of £262). 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.

Rainfall in Southampton by month

Plan your trip to Southampton by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Southampton ranges from 25.0 - 76.0 inches per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Southampton when rainfall is around 25.0 mm.

Temperature in Southampton by month

Plan your trip to Southampton by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Southampton, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Southampton

Get insights into the airlines that provide service to Southampton. 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 Southampton. Reviews last updated 21 February 2025.
Delta
8.0
Very Good
8,217 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very Good
8,217 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

British Airways
6.6
Okay
6,762 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Southampton round-trip?

    KLM, at £623, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Southampton.Alternate airlines flying return to your destination include Delta and British Airways. KLM is priced at 12% lower than the current average price of a flight leaving 3 months from now.

  • 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.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Southampton?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Southampton (average of £203). Flying from Washington, D.C. Dulles Intl Airport to Southampton in November is currently the most expensive (average of £262). 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.

See more FAQs

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Alternative routes for Dulles Intl to Southampton

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Baltimore to Heathrow flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
Dulles Intl to London City flights
Baltimore to Gatwick flights
Baltimore to Stansted flights
Reagan-National to Gatwick flights
Dulles Intl to Edinburgh flights
Dulles Intl to Luton flights
Baltimore to Luton flights
Baltimore to Edinburgh flights
Reagan-National to Edinburgh flights
Dulles Intl to Manchester flights
Baltimore to Manchester flights
Reagan-National to Manchester flights
Baltimore to London City flights
Dulles Intl to Leeds flights
Dulles Intl to Newcastle upon Tyne flights
Baltimore to Newcastle upon Tyne flights
Dulles Intl to Birmingham flights
Dulles Intl to Liverpool flights
Baltimore to Birmingham flights
Baltimore to Leeds flights
Baltimore to Southampton flights
Dulles Intl to Bristol flights
Reagan-National to Stansted flights
Reagan-National to Bristol flights
Baltimore to Bristol flights
Reagan-National to Luton flights
Dulles Intl to Bournemouth flights
Dulles Intl to Exeter flights
Baltimore to East Midlands flights
Dulles Intl to East Midlands flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Dulles Intl to Southampton?

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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