HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Southampton

$473+ Cheap flights from Reagan-National (DCA) to Southampton (SOU)

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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SOU
janv. 11 — janv. 181
dim. 1/11
dim. 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to Southampton with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Reagan-National to Southampton

Cheapest flights from Reagan-National to Southampton
Explore the most affordable flight options available from Reagan-National to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on décembre 12, 2025.

This Trip.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 12/114:30 pmDCA - SOU
2 stops19h 55mKLM
sam. 12/139:25 amSOU - DCA
2 stops18h 34mKLM
Deal found 12/10$1,070

Find flight deals from Reagan-National to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 décembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$765
(lastminute.com)

One-way from

$473
(KLM)

Popular in

December

Cheapest in

September

Average price

$977
Provider with most accurate pricing for Washington, D.C. Reagan-National-Southampton Eastleigh flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-Southampton Eastleigh flights.
Search Deals
From Washington, D.C. Reagan-National to Southampton Eastleigh
Search Deals
One-way flight from Washington, D.C. Reagan-National to Southampton Eastleigh
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 2,558,603 searches. Data last updated décembre 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Southampton that are best for you.

Fly from

Reagan-National

Fly to

Southampton

Route

Depart

Return

Price

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

sam. 1/24

6:00 am-5:15 pm

2 stops30h 15m

Southampton Eastleigh

sam. 1/31

9:25 am-10:53 pm

2 stops18h 28m

$765

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

sam. 1/24

6:15 pm-5:15 pm

2 stops18h 00m

Southampton Eastleigh

sam. 1/31

9:25 am-8:32 pm

2 stops16h 07m

$772

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

dim. 1/25

1:40 pm-8:50 am

2 stops14h 10m

Southampton Eastleigh

dim. 2/1

5:45 pm-4:29 pm

2 stops27h 44m

$781

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

sam. 1/24

4:15 pm-8:50 am

3 stops35h 35m

Southampton Eastleigh

sam. 1/31

9:30 am-10:53 pm

3 stops18h 23m

$1,406

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

dim. 1/25

4:15 pm-5:30 pm

3 stops20h 15m

Southampton Eastleigh

dim. 2/1

3:25 pm-9:58 pm

3 stops35h 33m

$2,294

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

jeu. 1/15

12:55 pm-8:25 am

2 stops14h 30m

$473

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

jeu. 1/15

4:10 pm-5:30 pm

3 stops20h 20m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Compare providers for flights from Reagan-National to Southampton

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Reagan-National to Southampton in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Southampton flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Reagan-National Airport-Southampton flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-Southampton flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Southampton flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Reagan-National Airport-Southampton flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Reagan-National to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Reagan-National with our price prediction graph.
Estimated round-trip 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. Reagan-National Airport to Southampton

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Southampton?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Southampton (average of $31). Flying from Washington, D.C. Reagan-National Airport to Southampton in June is currently the most expensive (average of $836). 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.

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

Find hourly flight availability from Reagan-National to Southampton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated décembre 12, 2025.

It’s typically best to fly out from Washington, D.C. Reagan-National Airport to Southampton at noon. Doing so could potentially save you 48% on the flight price compared to flying in the morning, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National?

    If you book a flight to Southampton from Washington, D.C. Reagan-National, you will be flying to Eastleigh, which is the city’s only airport. Southampton Eastleigh (SOU) is located 3.5 mi from the center of Southampton. There are 0 flights from Washington, D.C. Reagan-National to Eastleigh per day from 0 different airlines.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Southampton?

    Virgin Atlantic and KLM can get you from Washington, D.C. Reagan-National Airport to Southampton in just under 18h. Your travel time can differ by up to 12h 15m. The distance from Washington, D.C. Reagan-National Airport to Southampton is about 3626 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Reagan-National to Southampton that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Southampton flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Southampton.

  • Can I find deals for business class flights from Reagan-National to Southampton?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to Southampton?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Southampton (average of $31). Flying from Washington, D.C. Reagan-National Airport to Southampton in June is currently the most expensive (average of $836). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National 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
Reagan-National to Gatwick flights
Dulles Intl to Stansted flights
Dulles Intl to Luton flights
Dulles Intl to Edinburgh flights
Baltimore to Luton flights
Reagan-National to Luton flights
Baltimore to Edinburgh flights
Reagan-National to Edinburgh flights
Dulles Intl to Manchester flights
Baltimore to Manchester flights
Baltimore to Stansted flights
Reagan-National to Manchester flights
Reagan-National to London City flights
Baltimore to London City flights
Dulles Intl to Newcastle upon Tyne flights
Dulles Intl to Leeds flights
Reagan-National to Stansted flights
Baltimore to Newcastle upon Tyne flights
Reagan-National to Newcastle upon Tyne flights
Baltimore to Leeds flights
Reagan-National to Leeds flights
Dulles Intl to Birmingham flights
Baltimore to Birmingham flights
Dulles Intl to Liverpool flights
Reagan-National to Birmingham flights
Baltimore to Liverpool flights
Dulles Intl to Southampton flights
Reagan-National to Liverpool flights
Dulles Intl to Bristol flights
Dulles Intl to Southend flights
Baltimore to Southampton flights
Baltimore to Bristol flights
Reagan-National to Bristol flights
Baltimore to Newquay flights
Dulles Intl to Newquay flights
Dulles Intl to Exeter flights
Reagan-National to Newquay flights
Baltimore to Exeter flights
Dulles Intl to Doncaster flights
Baltimore to East Midlands flights
Reagan-National to East Midlands flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.