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£367 Find cheap flights from Southampton to Washington, D.C. Dulles Intl Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Southampton to Washington, D.C. departing on 26/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 25/5
Sat 1/6

Search hundreds of travel sites at once for deals on flights to Washington Dulles Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Southampton to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Southampton to Washington, D.C., as well as popular online travel agencies
In the last 7 days, travellers have searched 45,119,101 times on KAYAK, and here's why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Southampton to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
07:55 - 15:30SOU-IAD
36h 35m2 stops
16:55 - 07:25IAD-SOU
33h 30m2 stops
£653Delta
Find Deal
Wed, 25 Sep - Sun, 29 Sep
07:55 - 16:00SOU-IAD
13h 05m1 stop
16:55 - 07:25IAD-SOU
33h 30m2 stops
£659Delta
Find Deal
Wed, 25 Sep - Sun, 29 Sep
07:55 - 16:00SOU-IAD
13h 05m1 stop
17:25 - 16:50IAD-SOU
18h 25m1 stop
£684Delta
Find Deal
Wed, 25 Sep - Sun, 29 Sep
09:55 - 20:30SOU-IAD
15h 35m2 stops
22:50 - 19:25IAD-SOU
15h 35m2 stops
£1,037British Airways
Find Deal
Sat, 20 Jul - Sun, 21 Jul
09:55 - 20:30SOU-IAD
15h 35m2 stops
20:40 - 19:30IAD-SOU
17h 50m1 stop
£1,073British Airways
Find Deal
Sat, 20 Jul - Sun, 21 Jul
09:40 - 15:40SOU-IAD
11h 00m1 stop
17:10 - 09:10IAD-SOU
11h 00m1 stop
£1,224British Airways
Find Deal
Sat, 20 Jul - Sun, 21 Jul
09:40 - 19:10SOU-IAD
14h 30m1 stop
14:05 - 09:10IAD-SOU
14h 05m2 stops
£1,340British Airways
Find Deal
Mon, 5 Aug - Sun, 11 Aug
08:40 - 20:30SOU-IAD
16h 50m2 stops
14:05 - 09:10IAD-SOU
14h 05m2 stops
£1,345British Airways
Find Deal
Mon, 5 Aug - Sun, 11 Aug
09:40 - 15:40SOU-IAD
11h 00m1 stop
17:10 - 09:10IAD-SOU
11h 00m1 stop
£1,361British Airways
Find Deal
Mon, 5 Aug - Sun, 11 Aug
20:00 - 15:53SOU-IAD
24h 53m2 stops
12:41 - 15:45IAD-SOU
22h 04m2 stops
£18,609
Find Deal
Tue, 24 Sep - Fri, 4 Oct

Flights from Southampton to Washington, D.C. - Travel Insights & Trends

Get data-powered insights and trends into flights from Southampton to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Southampton to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Southampton to Washington, D.C. Dulles Intl Airport is September, where tickets cost £502 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is £641 and £623 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Southampton to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Southampton to Washington, D.C. Dulles Intl Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 86 days before departure.

Which airlines provide the cheapest flights from Southampton to Washington Dulles Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Southampton to Washington Dulles Airport were found on Delta (£653) and British Airways (£1,037). KLM proposed the cheapest one-way flight at £1,272.

Good to know - Cheap tickets from Southampton to Washington Dulles Airport

Cheapest flight

£367
Flight from Southampton to Washington Dulles Airport

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

Are your dates flexible? Find out the best times to travel from Southampton to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Southampton to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from Southampton to Washington, D.C. Dulles Intl Airport was £457 for a one-way ticket and £813 for a return.

  • Which airports will I be using when flying from Southampton to Washington Dulles Airport?

    On your way to Washington Dulles Airport, you’ll fly out from Southampton Eastleigh. You’ll be landing at Washington, D.C. Dulles Intl.

  • Which aircraft models fly most regularly from Southampton to Washington Dulles Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Southampton to Washington Dulles Airport?

    SkyTeam, and oneworld are the airline alliances operating flights between Southampton and Washington Dulles Airport, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Southampton to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Southampton to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Southampton to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Southampton is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Southampton to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington Dulles Airport with an airline and back to Southampton with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Southampton to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Southampton up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Southampton to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Southampton to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Southampton to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
Aer LingusOverall score based on 1349 reviews
7.1comfort
8.0crew
6.6food
7.3boarding
7.0entertainment
Airline reviews

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

6.0 Goodroy, Apr 2024DUB - SFO
Read more about Aer Lingus reviews

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

First the price I paid was excellent, my flight was full, but my seat was roomy. The one downside to the experience was they had games on the entertainment console. The guy behind me poked at my head about half the flight. I hope they get rid of this feature.

Aer Lingus doesn't have plug ins for devices at each seat. They also did not give me a dairy free meal as requested and confirmed by staff. It was as if I had not requested anything. Otherwise, they were great!

There were a lot of empty rows. As a single passenger I should not have been seated with 2 others. The WiFi didn’t work. The Kosher meal was awful.

They should. Heck planes more often not when they are suppose to be leaving causing delays

Thankfully not a full flight so although my headphone jack wasn’t working 100% on my window seat, I was able to move to the aisle seat. Food was fine, nothing great but tasty enough. Crew were friendly and made enough rounds. Always have a decent experience with Aer Lingus

Crew was fantastic got lovely food and plenty of water. Entertainment was good. Never had to ask for anything. Left on time and got to Seattle early. Luggage did not take long either.

Great hospitality and service! Seats are better cushioned then some

Great hospitality and service! Seats could always be cushioned better.

Customs is always a challenge. The customs officials were real humans, which was nice-not robots programmed on angry 😊. If you’re in a hurry to get through you’ll be stressed out. Allow yourselves plenty of time and it will be a stress free experience.

Book cheap flights from Southampton to Washington, D.C.

Cheapest flights to Washington, D.C. from Southampton found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Southampton to Washington, D.C. found on KAYAK in the last 72 hours.
26/6Wed
3 stops
37h 25mSOU-IAD
£367
26/6Wed
2 stops
26h 40mSOU-IAD
£507
26/6Wed
1 stopKLM
13h 05mSOU-IAD
£1,272
20/5Mon
1 stopBritish Airways
14h 30mSOU-IAD
£2,093
20/5Mon
2 stopsBritish Airways
16h 50mSOU-IAD
£2,104

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Last minute flights from Southampton to Washington, D.C.

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Southampton to Washington, D.C. that are departing in the next 10 days.
29/4Mon
multi-stopAer Lingus
24h 40mSOU-IAD
6/5Mon
multi-stopAer Lingus
31h 30mIAD-SOU
£896
29/4Mon
multi-stopAer Lingus
29h 30mSOU-IAD
6/5Mon
multi-stopAer Lingus
31h 30mIAD-SOU
£987
29/4Mon
multi-stopBritish Airways
24h 35mSOU-IAD
6/5Mon
multi-stopBritish Airways
13h 05mIAD-SOU
£1,132

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Southampton - Washington Dulles Airport Flights

Departure:

Southampton (SOU)United Kingdom

Destination:

Washington Dulles Airport (IAD)United States

Return flight deals:

Washington Dulles Airport - Southampton

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