In terms of precipitation, rainfall in Southampton ranges from 1.0 - 3.0 inches per month. December is typically the wettest month, when rainfall can reach 3.0 in. July is typically the driest time to visit Southampton when rainfall is around 1.0 in.

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 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Southampton?

Find a great deal and save up to 35% by booking at least 48 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. Reagan-National Airport to Southampton within the next two weeks, with the cheapest ticket starting at $770.

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

January is one of the best times of the year to fly to Southampton from Washington, D.C. Reagan-National Airport. Prices for January average $734 per person but you can even find prices for as low as $386. The most expensive prices can be found in the month of June. Opting for a January flight can save you 29% on your journey compared to booking in June

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.

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.

$495+ Flights from Washington, D.C. Reagan-National Airport to Southampton

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Cheap flight deals from Reagan-National to Southampton

Round-trip from	$827 (Delta)
One-way from	$495 (KLM)
Popular in	June
Cheapest in	January
Average price	$808

From Washington, D.C. Reagan-National to Southampton Eastleigh

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One-way flight from Washington, D.C. Reagan-National to Southampton Eastleigh

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Highest demand for flights based on searches. 12% potential increase in price ($99 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find 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 July 29, 2025.

Tue 11/1812:59 pmDCA - SOU

2 stops14h 11mKLM

Thu 12/48:50 amSOU - DCA

2 stops16h 24mKLM

Deal found 7/28

$815

Fri 9/1211:10 amDCA - SOU

2 stops16h 35mDelta

Fri 9/199:20 amSOU - DCA

2 stops17h 51mDelta

Deal found 7/29

$827

Fri 9/126:59 amDCA - SOU

3 stops27h 46mMultiple Airlines

Fri 9/199:40 amSOU - DCA

2 stops17h 54mMultiple Airlines

Deal found 7/29

$1,245

Best flights from Reagan-National to Southampton
Discover carefully curated flight deals from Reagan-National to Southampton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Fri 9/1211:10 amDCA - SOU

2 stops16h 35mDelta

Fri 9/199:20 amSOU - DCA

2 stops17h 51mDelta

Deal found 7/29

$827

Fri 9/126:59 amDCA - SOU

3 stops27h 46mMultiple Airlines

Fri 9/199:40 amSOU - DCA

2 stops17h 54mMultiple Airlines

Deal found 7/29

$1,245

Last-minute flights from Reagan-National to Southampton
Discover last-minute flight deals from Reagan-National to Southampton. Data last updated July 29, 2025 and is based on user searches.

Tue 8/512:29 pmDCA - SOU

2 stops15h 16mDelta

Mon 8/255:35 pmSOU - DCA

2 stops21h 39mDelta

Deal found 7/28

$828

Sat 8/911:00 amDCA - SOU

2 stops16h 45mDelta

Mon 8/186:25 pmSOU - DCA

2 stops27h 08mDelta

Deal found 7/28

$828

One-way flights from Reagan-National to Southampton
Search for one-way flight options from Reagan-National to Southampton. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Fri 9/122:50 pmDCA - SOU

2 stops12h 55mKLM

Deal found 7/29

$495

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Fri 9/12

11:10 am-8:45 am

2 stops16h 35m

Southampton Eastleigh

Fri 9/19

9:20 am-10:11 pm

2 stops17h 51m

$827

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Fri 9/12

6:59 am-3:45 pm

3 stops27h 46m

Southampton Eastleigh

Fri 9/19

9:40 am-10:34 pm

2 stops17h 54m

$1,245

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Fri 9/12

2:50 pm-8:45 am

2 stops12h 55m

$495

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Southampton (average of $787). Flying from Washington, D.C. Reagan-National Airport to Southampton in June is currently the most expensive (average of $1,308). 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?

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

Reviews of airlines servicing Southampton

Get a feel of what it's like to fly with Delta and KLM from Washington, D.C. Reagan-National Airport to Southampton by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,979 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,383 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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.
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, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Southampton (average of $787). Flying from Washington, D.C. Reagan-National Airport to Southampton in June is currently the most expensive (average of $1,308). 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.

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$495+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Reagan-National to Southampton with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Reagan-National to Southampton

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Reagan-National to Southampton

Cheapest flights from Reagan-National to SouthamptonExplore 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 July 29, 2025.

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 July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Southampton that are best for you.

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.

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?

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 July 29, 2025.

Reviews of airlines servicing Southampton

Get a feel of what it's like to fly with Delta and KLM from Washington, D.C. Reagan-National Airport to Southampton by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

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

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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 July 29, 2025.