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

KLM, at £600, 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 Virgin Atlantic. KLM is priced at 16% lower than the current average price of a flight leaving 3 months from now.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Southampton?

Find a great deal and save up to 16% by booking at least 39 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Washington, D.C. Dulles Intl Airport to Southampton within the next two weeks, with the cheapest ticket starting at £619.

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

The best pricing can be found in the month of January. Prices to Southampton from Washington, D.C. Dulles Intl Airport average £578. You can even find prices in January for less than £578, as users have found deals to Southampton from as low as £298. The month of June appears to be one of the more expensive times to travel to Southampton from Washington, D.C. Dulles Intl Airport. Flying in the targeted month can save you up to 34%.

What is the cheapest time of day to fly from IAD to SOU?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Southampton as you normally would.

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.

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.

£365+ Flights from Washington, D.C. Dulles Intl Airport to Southampton

Cheap flight deals from Dulles Intl to Southampton

Round-trip from	£600
One-way from	£365
Popular in	June
Cheapest in	November
Average price	£520

KLM
23/4-7/5
2 total stops
21h 35m total
Washington, D.C. to Southampton

Search Deals

Virgin Atlantic
20/4
1 total stop
10h 20m total
Washington, D.C. to Southampton

Search Deals

Highest demand for flights based on searches. 23% potential increase in price (£173 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£30 potential savings vs. average return price).

Search Deals

Average for round-trip flights in March 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 25 March 2025.

Wed 23/417:25IAD - SOU

1 stop10h 20mKLM

Wed 7/509:20SOU - IAD

1 stop11h 15mKLM

Deal found 24/3£600

Mon 1/917:25IAD - SOU

1 stop18h 35mDelta

Thu 25/917:35SOU - IAD

1 stop27h 00mDelta

Deal found 23/3£619

Fri 9/517:25IAD - SOU

1 stop10h 20mVirgin Atlantic

Fri 16/517:35SOU - IAD

1 stop27h 00mVirgin Atlantic

Deal found 25/3£682

Fri 9/522:05IAD - SOU

3 stops29h 30mMultiple Airlines

Fri 16/520:15SOU - IAD

2 stops28h 44mMultiple Airlines

Deal found 25/3£713

Sat 13/917:20IAD - SOU

1 stop10h 15mAer Lingus

Mon 22/909:40SOU - IAD

1 stop11h 10mAer Lingus

Deal found 25/3£780

Tue 8/417:20IAD - SOU

1 stop9h 45mBritish Airways

Tue 15/408:40SOU - IAD

2 stops16h 30mBritish Airways

Deal found 25/3£838

Best flights from Dulles Intl to Southampton
Discover carefully curated flight deals from Dulles Intl to Southampton that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 25 March 2025.

Wed 23/417:25IAD - SOU

1 stop10h 20mKLM

Wed 7/509:20SOU - IAD

1 stop11h 15mKLM

Deal found 24/3£600

Mon 1/917:25IAD - SOU

1 stop18h 35mDelta

Thu 25/917:35SOU - IAD

1 stop27h 00mDelta

Deal found 23/3£619

Fri 9/517:25IAD - SOU

1 stop10h 20mVirgin Atlantic

Fri 16/517:35SOU - IAD

1 stop27h 00mVirgin Atlantic

Deal found 25/3£682

Fri 9/522:05IAD - SOU

3 stops29h 30mMultiple Airlines

Fri 16/520:15SOU - IAD

2 stops28h 44mMultiple Airlines

Deal found 25/3£713

Sat 13/917:20IAD - SOU

1 stop10h 15mAer Lingus

Mon 22/909:40SOU - IAD

1 stop11h 10mAer Lingus

Deal found 25/3£780

Tue 8/417:20IAD - SOU

1 stop9h 45mBritish Airways

Tue 15/408:40SOU - IAD

2 stops16h 30mBritish Airways

Deal found 25/3£838

Last-minute flights from Dulles Intl to Southampton
Discover last-minute flight deals from Dulles Intl to Southampton. Data last updated 25 March 2025 and is based on user searches.

Tue 8/417:25IAD - SOU

1 stop10h 20mDelta

Sun 20/418:25SOU - IAD

2 stops33h 42mDelta

Deal found 24/3£691

Tue 8/417:20IAD - SOU

1 stop9h 45mBritish Airways

Tue 15/408:40SOU - IAD

2 stops16h 30mBritish Airways

Deal found 25/3£838

Wed 23/417:25IAD - SOU

1 stop10h 20mKLM

Wed 7/509:20SOU - IAD

1 stop11h 15mKLM

Deal found 24/3£600

Wed 23/418:10IAD - SOU

2 stops20h 00mMultiple Airlines

Wed 7/509:10SOU - IAD

3 stops33h 04mMultiple Airlines

Deal found 24/3£867

One-way flights from Dulles Intl to Southampton
Search for one-way flight options from Dulles Intl to Southampton. Find affordable one-way fares based on user searches. Data last updated 25 March 2025.

Sun 20/417:25IAD - SOU

1 stop10h 20mVirgin Atlantic

Deal found 25/3£365

Sun 20/410:06IAD - SOU

2 stops17h 39mDelta

Deal found 24/3£381

Sun 20/423:05IAD - SOU

3 stops52h 20mMultiple Airlines

Deal found 25/3£401

Mon 16/620:25IAD - SOU

1 stop18h 05mAer Lingus

Deal found 25/3£488

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.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 23/4

17:25-08:45

1 stop10h 20m

Southampton Eastleigh

Wed 7/5

09:20-15:35

1 stop11h 15m

£600

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 1/9

17:25-17:00

1 stop18h 35m

Southampton Eastleigh

Thu 25/9

17:35-15:35

1 stop27h 00m

£619

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Fri 9/5

17:25-08:45

1 stop10h 20m

Southampton Eastleigh

Fri 16/5

17:35-15:35

1 stop27h 00m

£682

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Fri 9/5

22:05-08:35

3 stops29h 30m

Southampton Eastleigh

Fri 16/5

20:15-19:59

2 stops28h 44m

£713

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 13/9

17:20-08:35

1 stop10h 15m

Southampton Eastleigh

Mon 22/9

09:40-15:50

1 stop11h 10m

£780

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Tue 8/4

17:20-08:05

1 stop9h 45m

Southampton Eastleigh

Tue 15/4

08:40-20:10

2 stops16h 30m

£838

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 20/4

17:25-08:45

1 stop10h 20m

£365

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 20/4

10:06-08:45

2 stops17h 39m

£381

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 20/4

23:05-08:25

3 stops52h 20m

£401

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 16/6

20:25-19:30

1 stop18h 05m

£488

Flights are sorted by cheapest return flights first.

Deals found on 25/3

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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Southampton

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

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

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

Delta

8.0

Very Good

7,890 reviews

Check prices

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

7,890 reviews

Delta

8.0

Very Good

7,890 reviews

Check prices

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

1,318 reviews

Delta

8.0

Very Good

7,890 reviews

Check prices

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.

Virgin Atlantic

7.4

Good

634 reviews

Delta

8.0

Very Good

7,890 reviews

Check prices

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.

Aer Lingus

7.0

Good

1,061 reviews

Delta

8.0

Very Good

7,890 reviews

Check prices

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

6,712 reviews

Delta

8.0

Very Good

7,890 reviews

Check prices

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

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 £600, 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 Virgin Atlantic. KLM is priced at 16% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Southampton one-way?
The cheapet airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Southampton are Virgin Atlantic (£365), Delta (£381), and Aer Lingus (£488).
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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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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Cheap flights from Washington, D.C. Dulles Intl Airport to Southampton from £365

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Dulles Intl to Southampton

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Dulles Intl to Southampton

Cheapest flights from Dulles Intl to SouthamptonExplore 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 25 March 2025.

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 25 March 2025.

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.

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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Southampton

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

Rainfall in Southampton by month

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

Temperature in Southampton by month

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

Reviews of airlines servicing Southampton

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?

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

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Southampton one-way?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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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.

Fly with Cheapflights

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

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

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

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

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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 25 March 2025.