How long is the flight from Southampton to Washington, D.C.?

For as low as £491, Delta can have you in Washington, D.C. from Southampton in 12h 25m. The distance from Southampton to Washington, D.C. is about 3639 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What is the cheapest day to fly from Southampton to Washington, D.C.?

Travellers seeking maximum savings on their Southampton to Washington, D.C. flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C., 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

What are the most popular routes from Southampton to Washington, D.C.?

The most popular route from Southampton to Washington, D.C. is Southampton Eastleigh - Washington, D.C. Dulles Intl. You may also consider Southampton Eastleigh - Baltimore/Washington or Southampton Eastleigh - Washington, D.C. Reagan-National.

What is the cheapest day to fly round-trip from Southampton to Washington, D.C.?

Flights from Southampton to Washington, D.C. are found to be more expensive on Thursday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C..

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

Travelers have found it’s best to book a flight 60 days in advance to save up to 26% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 60 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Southampton to Washington, D.C. 1-2 weeks in advance for as low as £526, or £778 for flights within the next 24 hours.

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

February can be a great time to fly to Washington, D.C. from Southampton with a flight ticket averaging about £541. Cheapflights users have found deals in the month of February for as cheap as £225. The most expensive prices can be found in the month of July.

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

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

What airport do you fly from for flights from Southampton to Washington, D.C.?

Southampton Eastleigh (SOU) is the airport you will fly out of if you book a flight from Southampton to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Eastleigh; the airport handles an average of 0 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Southampton airport to Washington, D.C.. It is only a 3.5 mi journey to Eastleigh (SOU) from Southampton’s city center.

Can I find deals for flights from Southampton to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Southampton to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Southampton to Washington, D.C.?

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

Can I find deals for business class flights from Southampton to Washington, D.C.?

Yes. Cheapflights offers flight deals from Southampton to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£480+ Flights from Southampton to Washington, D.C.

Cheap flight deals from Southampton to Washington, D.C.

Round-trip from	£480
Popular in	July
Cheapest in	February
Average price	£491

Delta
28/10-4/11
4 total stops
35h 14m total
Southampton to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£49 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Southampton to Washington, D.C.

Cheapest flights from Southampton to Washington, D.C.
Explore the most affordable flight options available from Southampton to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.

Tue 28/1008:40SOU - BWI

2 stops18h 22mDelta

Tue 4/1110:18BWI - SOU

2 stops16h 52mDelta

Deal found 13/9£480

Tue 28/1017:30SOU - IAD

1 stop27h 35mKLM

Tue 4/1118:05IAD - SOU

1 stop17h 55mKLM

Deal found 13/9£490

Tue 28/1008:40SOU - IAD

1 stop12h 25mVirgin Atlantic

Tue 4/1113:00IAD - SOU

2 stops14h 10mVirgin Atlantic

Deal found 13/9£491

Tue 28/1008:40SOU - IAD

2 stops18h 20mDelta

Tue 4/1117:10IAD - SOU

2 stops18h 50mDelta

Deal found 13/9£496

Tue 28/1008:40SOU - DCA

2 stops17h 03mDelta

Tue 4/1115:00DCA - SOU

2 stops21h 00mDelta

Deal found 13/9£496

Tue 28/1020:50SOU - IAD

2 stops23h 45mBritish Airways

Tue 4/1118:20IAD - SOU

3 stops14h 35mBritish Airways

Deal found 13/9£678

Tue 28/1020:10SOU - IAD

3 stops29h 50mMultiple Airlines

Tue 4/1117:30IAD - SOU

3 stops21h 10mMultiple Airlines

Deal found 13/9£704

Best flights from Southampton to Washington, D.C.
Discover carefully curated flight deals from Southampton to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 September 2025.

Tue 28/1008:40SOU - BWI

2 stops18h 22mDelta

Tue 4/1110:18BWI - SOU

2 stops16h 52mDelta

Deal found 13/9£480

Tue 28/1017:30SOU - IAD

1 stop27h 35mKLM

Tue 4/1118:05IAD - SOU

1 stop17h 55mKLM

Deal found 13/9£490

Tue 28/1008:40SOU - IAD

1 stop12h 25mVirgin Atlantic

Tue 4/1113:00IAD - SOU

2 stops14h 10mVirgin Atlantic

Deal found 13/9£491

Tue 28/1020:50SOU - IAD

2 stops23h 45mBritish Airways

Tue 4/1118:20IAD - SOU

3 stops14h 35mBritish Airways

Deal found 13/9£678

Tue 28/1008:40SOU - IAD

2 stops18h 20mDelta

Tue 4/1117:10IAD - SOU

2 stops18h 50mDelta

Deal found 13/9£496

Tue 28/1008:40SOU - DCA

2 stops17h 03mDelta

Tue 4/1115:00DCA - SOU

2 stops21h 00mDelta

Deal found 13/9£496

Last-minute flights from Southampton to Washington, D.C.
Discover last-minute flight deals from Southampton to Washington, D.C.. Data last updated 15 September 2025 and is based on user searches.

Tue 28/1008:40SOU - BWI

2 stops18h 22mDelta

Tue 4/1110:18BWI - SOU

2 stops16h 52mDelta

Deal found 13/9£480

Tue 28/1017:30SOU - IAD

1 stop27h 35mKLM

Tue 4/1118:05IAD - SOU

1 stop17h 55mKLM

Deal found 13/9£490

Tue 28/1008:40SOU - IAD

1 stop12h 25mVirgin Atlantic

Tue 4/1113:00IAD - SOU

2 stops14h 10mVirgin Atlantic

Deal found 13/9£491

Tue 28/1008:40SOU - IAD

2 stops18h 20mDelta

Tue 4/1117:10IAD - SOU

2 stops18h 50mDelta

Deal found 13/9£496

Tue 28/1008:40SOU - DCA

2 stops17h 03mDelta

Tue 4/1115:00DCA - SOU

2 stops21h 00mDelta

Deal found 13/9£496

Tue 28/1020:50SOU - IAD

2 stops23h 45mBritish Airways

Tue 4/1118:20IAD - SOU

3 stops14h 35mBritish Airways

Deal found 13/9£678

Tue 28/1020:10SOU - IAD

3 stops29h 50mMultiple Airlines

Tue 4/1117:30IAD - SOU

3 stops21h 10mMultiple Airlines

Deal found 13/9£704

One-way flights from Southampton to Washington, D.C.
Search for one-way flight options from Southampton to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 15 September 2025.

Tue 20/120:30SOU - IAD

2 stops28h 25mBritish Airways

Deal found 14/9£554

Wed 19/1108:40SOU - IAD

2 stops16h 15mBritish Airways

Deal found 14/9£568

Sat 25/1009:55SOU - IAD

2 stops15h 25mBritish Airways

Deal found 14/9£1,011

Mon 19/120:30SOU - BWI

2 stops27h 15mBritish Airways

Deal found 14/9£1,051

Mon 19/120:30SOU - IAD

2 stops24h 05mBritish Airways

Deal found 14/9£1,051

Wed 19/1119:55SOU - BWI

2 stops27h 50mBritish Airways

Deal found 14/9£2,682

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Tue 28/10

08:40-23:02

2 stops18h 22m

Baltimore/Washington

Tue 4/11

10:18-08:10

2 stops16h 52m

£480

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Tue 28/10

17:30-17:05

1 stop27h 35m

Washington, D.C. Dulles Intl

Tue 4/11

18:05-17:00

1 stop17h 55m

£490

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Tue 28/10

08:40-17:05

1 stop12h 25m

Washington, D.C. Dulles Intl

Tue 4/11

13:00-08:10

2 stops14h 10m

£491

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Tue 28/10

08:40-23:00

2 stops18h 20m

Washington, D.C. Dulles Intl

Tue 4/11

17:10-17:00

2 stops18h 50m

£496

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Tue 28/10

08:40-21:43

2 stops17h 03m

Washington, D.C. Reagan-National

Tue 4/11

15:00-17:00

2 stops21h 00m

£496

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Tue 28/10

20:50-16:35

2 stops23h 45m

Washington, D.C. Dulles Intl

Tue 4/11

18:20-13:55

3 stops14h 35m

£678

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Tue 20/1

20:30-19:55

2 stops28h 25m

£554

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 19/11

08:40-19:55

2 stops16h 15m

£568

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Sat 25/10

09:55-20:20

2 stops15h 25m

£1,011

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Mon 19/1

20:30-18:45

2 stops27h 15m

£1,051

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 14 results

Best time to book a flight from Southampton to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Southampton 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 Southampton to Washington, D.C.

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

Currently, January is the cheapest month in which you can book a flight from Southampton to Washington, D.C. (average of £599). Flying from Southampton to Washington, D.C. in July is currently the most expensive (average of £947). 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’s the top stopover airport for flights from Southampton to Washington, D.C.?

Dublin (DUB) – chosen by Cheapflights users on 85% of one-stop itineraries from Southampton to Washington, D.C. on Cheapflights.

What’s the cheapest stopover airport for flights from Southampton to Washington, D.C.?

Dublin (DUB) is the most affordable one-stop option, with an average return flight price of £591.

What’s the fastest stopover option from Southampton to Washington, D.C.?

Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 11h 10m.

Which airport typically offers the quickest stopover for flights from Southampton to Washington, D.C.?

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 28m.

Reviews of airlines servicing Washington, D.C.

Read reviews from past customers who have flown with Aer Lingus from Southampton to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Aer Lingus

7.2

Good

1,271 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.

Aer Lingus

7.2

Good

1,271 reviews

Aer Lingus

7.2

Good

1,271 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jul 2025

DUB - ORD

Related info for your journey

What airport do you fly from for flights from Southampton to Washington, D.C.?
Southampton Eastleigh (SOU) is the airport you will fly out of if you book a flight from Southampton to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Eastleigh; the airport handles an average of 0 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Southampton airport to Washington, D.C.. It is only a 3.5 mi journey to Eastleigh (SOU) from Southampton’s city center.
How long is the flight from Southampton to Washington, D.C.?
For as low as £491, Delta can have you in Washington, D.C. from Southampton in 12h 25m. The distance from Southampton to Washington, D.C. is about 3639 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most popular routes from Southampton to Washington, D.C.?
The most popular route from Southampton to Washington, D.C. is Southampton Eastleigh - Washington, D.C. Dulles Intl. You may also consider Southampton Eastleigh - Baltimore/Washington or Southampton Eastleigh - Washington, D.C. Reagan-National.
Can I find deals for flights from Southampton to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Southampton to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Southampton to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to Washington, D.C..
Can I find deals for business class flights from Southampton to Washington, D.C.?
Yes. Cheapflights offers flight deals from Southampton to Washington, D.C. 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 Southampton to Washington, D.C.?
Currently, January is the cheapest month in which you can book a flight from Southampton to Washington, D.C. (average of £599). Flying from Southampton to Washington, D.C. in July is currently the most expensive (average of £947). 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 Southampton to Washington, D.C.?

Deals for Southampton to Washington, D.C. flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Southampton to Washington, D.C.?

Cheapflights helps you find that perfect flight to Washington, D.C. from Southampton by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Southampton to Washington, D.C. with no change fees?

Yes, we can. To see specific flights from Southampton to Washington, D.C. with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Southampton to Washington, D.C. become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from Southampton to Washington, D.C. from £480

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Southampton to Washington, D.C.

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Southampton to Washington, D.C.

Cheapest flights from Southampton to Washington, D.C.Explore the most affordable flight options available from Southampton to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.

Explore the most affordable flight options available from Southampton to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Southampton to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Southampton with our price prediction graph.

Cheapflights Insights

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

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

What’s the top stopover airport for flights from Southampton to Washington, D.C.?

Share of one-stop return flights from Southampton to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from Southampton to Washington, D.C.?

Average return fare for one-stop flights from Southampton to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from Southampton to Washington, D.C.?

Shortest average travel time for one-stop one-way flights from Southampton to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from Southampton to Washington, D.C.?

Average stopover duration for one-stop one-way flights from Southampton to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Washington, D.C.

Read reviews from past customers who have flown with Aer Lingus from Southampton to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated 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 Southampton to Washington, D.C.. 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 from for flights from Southampton to Washington, D.C.?

How long is the flight from Southampton to Washington, D.C.?

What are the most popular routes from Southampton to Washington, D.C.?

Can I find deals for flights from Southampton to Washington, D.C. that include hotel bookings?

How can I find direct flights from Southampton to Washington, D.C.?

Can I find deals for business class flights from Southampton to Washington, D.C.?

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

Travelling to a place near Washington, D.C.?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Southampton to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.

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How does Cheapflights help users find flights from Southampton to Washington, D.C.?

Why should you use Cheapflights to find cheap flight tickets from Southampton to Washington, D.C.?

Can Cheapflights find flights from Southampton to Washington, D.C. with no change fees?

Can Cheapflights notify me if prices for flights from Southampton to Washington, D.C. become cheaper?

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Cheapest flights from Southampton to Washington, D.C.
Explore the most affordable flight options available from Southampton to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.