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Cheap flights from London Southend Airport to Washington, D.C. from $507

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Southend Airport to Washington, D.C. departing on 12/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Southend Airport to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:15 am - 7:30 pmSEN-IAD
17h 15m2 stops
Multiple Airlines Logo
5:05 pm - 2:50 pmIAD-SEN
16h 45m2 stops
$1,020Multiple Airlines
Find Deal
Sat, Dec 13 - Sun, Dec 28
Multiple Airlines Logo
7:15 am - 7:30 pmSEN-IAD
17h 15m2 stops
Multiple Airlines Logo
5:05 pm - 2:50 pmIAD-SEN
16h 45m2 stops
$1,022Multiple Airlines
Find Deal
Sat, Dec 13 - Sun, Dec 28
Multiple Airlines Logo
7:15 am - 4:05 pmSEN-IAD
13h 50m1 stop
Multiple Airlines Logo
6:05 pm - 2:50 pmIAD-SEN
15h 45m1 stop
$1,129Multiple Airlines
Find Deal
Sat, Dec 13 - Sun, Dec 28
Multiple Airlines Logo
6:40 am - 4:05 pmSEN-IAD
14h 25m1 stop
Multiple Airlines Logo
6:50 pm - 5:15 pmIAD-SEN
17h 25m2 stops
$1,165Multiple Airlines
Find Deal
Fri, Dec 19 - Wed, Jan 7
Multiple Airlines Logo
6:40 am - 4:05 pmSEN-IAD
14h 25m1 stop
Multiple Airlines Logo
6:05 pm - 10:00 amIAD-SEN
10h 55m1 stop
$1,182Multiple Airlines
Find Deal
Fri, Dec 26 - Fri, Jan 2
Multiple Airlines Logo
6:40 am - 4:05 pmSEN-IAD
14h 25m1 stop
Multiple Airlines Logo
6:05 pm - 10:00 amIAD-SEN
10h 55m1 stop
$1,191Multiple Airlines
Find Deal
Fri, Dec 26 - Fri, Jan 2
Multiple Airlines Logo
6:40 am - 4:05 pmSEN-IAD
14h 25m1 stop
Multiple Airlines Logo
6:05 pm - 10:00 amIAD-SEN
10h 55m1 stop
$1,218Multiple Airlines
Find Deal
Fri, Dec 26 - Fri, Jan 2
Multiple Airlines Logo
7:10 am - 6:45 pmSEN-IAD
16h 35m2 stops
Multiple Airlines Logo
9:45 am - 12:00 pmIAD-SEN
21h 15m3 stops
$1,326Multiple Airlines
Find Deal
Sun, Dec 21 - Wed, Jan 7
Multiple Airlines Logo
7:15 am - 4:05 pmSEN-IAD
13h 50m1 stop
Multiple Airlines Logo
6:05 pm - 2:50 pmIAD-SEN
15h 45m1 stop
$1,383Multiple Airlines
Find Deal
Sat, Dec 13 - Sun, Dec 28
Multiple Airlines Logo
7:15 am - 7:30 pmSEN-IAD
17h 15m2 stops
Multiple Airlines Logo
5:05 pm - 8:10 pmIAD-SEN
22h 05m2 stops
$1,426Multiple Airlines
Find Deal
Sat, Dec 13 - Sat, Dec 20

momondo Fare Finder

 
Customize your flight search to find flights from London Southend Airport to Washington, D.C. 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, momondo users made 832,500 searches. Data last updated November 17, 2025.
Use the filters below to find and compare flights from London Southend Airport to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 12/13

7:15 am-7:30 pm

2 stops17h 15m

Washington, D.C. Dulles Intl

Sun 12/28

5:05 pm-2:50 pm

2 stops16h 45m

$1,020

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 12/13

7:15 am-7:30 pm

2 stops17h 15m

Washington, D.C. Dulles Intl

Sun 12/28

5:05 pm-2:50 pm

2 stops16h 45m

$1,022

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 12/13

7:15 am-4:05 pm

1 stop13h 50m

Washington, D.C. Dulles Intl

Sun 12/28

6:05 pm-2:50 pm

1 stop15h 45m

$1,129

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 12/19

6:40 am-4:05 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Wed 1/7

6:50 pm-5:15 pm

2 stops17h 25m

$1,165

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 12/26

6:40 am-4:05 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Fri 1/2

6:05 pm-10:00 am

1 stop10h 55m

$1,182

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 12/26

6:40 am-4:05 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Fri 1/2

6:05 pm-10:00 am

1 stop10h 55m

$1,191

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 12/26

6:40 am-4:05 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Fri 1/2

6:05 pm-10:00 am

1 stop10h 55m

$1,218

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 12/21

7:10 am-6:45 pm

2 stops16h 35m

Washington, D.C. Dulles Intl

Wed 1/7

9:45 am-12:00 pm

3 stops21h 15m

$1,326

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 12/13

7:15 am-4:05 pm

1 stop13h 50m

Washington, D.C. Dulles Intl

Sun 12/28

6:05 pm-2:50 pm

1 stop15h 45m

$1,383

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 12/13

7:15 am-7:30 pm

2 stops17h 15m

Washington, D.C. Dulles Intl

Sat 12/20

5:05 pm-8:10 pm

2 stops22h 05m

$1,426

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London Southend Airport to Washington, D.C.

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from London Southend Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $777. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Southend Airport to Washington, D.C. for around $936.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the evening is the cheapest time of day to fly from London Southend Airport to Washington, D.C. when you can find flight prices for as low as $762. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $867. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from London Southend Airport to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from London Southend Airport to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Southend Airport to Washington, D.C. (SEN to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Southend Airport to Washington, D.C.

Direct flights

None
There are no direct flights from London Southend Airport to Washington, D.C.. There are no popular flight routes from London Southend Airport to Washington, D.C..
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  • How far is London Southend to Washington, D.C. by plane?

    The straight-line distance from London Southend to Washington, D.C. is 3694.1 mi. A reasonable flight in good conditions will take 13h 50m.

  • When did momondo last update prices for flights from London Southend Airport to Washington, D.C.?

    Prices for flights from London Southend Airport to Washington, D.C. are refreshed on a daily basis.

  • How old do you have to be to fly from London Southend Airport to Washington, D.C.?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Southend Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Reston
Manassas
Gaithersburg
Fairfax
Glen Burnie
Linthicum Heights
Springfield

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

It is quick and easy to find London to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

Flights from London to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Washington, D.C.?

momondo helps you find the best flight between London and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport