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Cheap flights from London Southend Airport to Washington, D.C. from £336

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 31/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from London Southend Airport to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:15 - 22:15
SEN
-
IAD
15h 00m
2 stops
Multiple Airlines Logo
20:30 - 16:40
IAD
-
SEN
15h 10m
2 stops
£683Multiple Airlines
Wed, 22 Jul - Wed, 29 Jul
Multiple Airlines Logo
07:35 - 15:35
SEN
-
IAD
13h 00m
1 stop
Multiple Airlines Logo
17:40 - 10:15
IAD
-
SEN
11h 35m
1 stop
£886Multiple Airlines
Sun, 23 Aug - Sat, 29 Aug
Multiple Airlines Logo
16:30 - 15:45
SEN
-
IAD
28h 15m
2 stops
Multiple Airlines Logo
18:15 - 10:45
IAD
-
SEN
11h 30m
1 stop
£1,029Multiple Airlines
Fri, 7 Aug - Thu, 13 Aug
Multiple Airlines Logo
12:15 - 19:35
SEN
-
IAD
12h 20m
1 stop
Multiple Airlines Logo
18:15 - 10:30
IAD
-
SEN
11h 15m
1 stop
£1,072Multiple Airlines
Wed, 29 Jul - Sun, 9 Aug
Multiple Airlines Logo
07:00 - 19:00
SEN
-
IAD
17h 00m
2 stops
Multiple Airlines Logo
17:45 - 13:00
IAD
-
SEN
14h 15m
2 stops
£1,121Multiple Airlines
Tue, 14 Jul - Thu, 16 Jul
Multiple Airlines Logo
07:45 - 16:05
SEN
-
IAD
13h 20m
1 stop
Multiple Airlines Logo
21:45 - 16:40
IAD
-
SEN
13h 55m
1 stop
£1,139Multiple Airlines
Mon, 20 Jul - Wed, 19 Aug
Multiple Airlines Logo
07:35 - 19:25
SEN
-
IAD
16h 50m
2 stops
Multiple Airlines Logo
20:55 - 18:50
IAD
-
SEN
16h 55m
2 stops
£1,171Multiple Airlines
Sun, 2 Aug - Sun, 16 Aug
Multiple Airlines Logo
07:35 - 19:25
SEN
-
IAD
16h 50m
2 stops
Multiple Airlines Logo
17:40 - 10:15
IAD
-
SEN
11h 35m
1 stop
£1,265Multiple Airlines
Sun, 9 Aug - Sat, 22 Aug
Multiple Airlines Logo
07:35 - 19:25
SEN
-
IAD
16h 50m
2 stops
Multiple Airlines Logo
17:40 - 10:15
IAD
-
SEN
11h 35m
1 stop
£1,272Multiple Airlines
Sun, 9 Aug - Sat, 15 Aug
Multiple Airlines Logo
11:20 - 19:35
SEN
-
IAD
13h 15m
1 stop
Multiple Airlines Logo
20:55 - 19:20
IAD
-
SEN
41h 25m
2 stops
£1,911Multiple Airlines
Fri, 7 Aug - Fri, 14 Aug

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momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 27 June 2026.
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

Cheapest return flight

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Wed 22/7

12:15-22:15

2 stops15h 00m

Washington, D.C. Dulles Intl

Wed 29/7

20:30-16:40

2 stops15h 10m

£683

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 23/8

07:35-15:35

1 stop13h 00m

Washington, D.C. Dulles Intl

Sat 29/8

17:40-10:15

1 stop11h 35m

£886

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 7/8

16:30-15:45

2 stops28h 15m

Washington, D.C. Dulles Intl

Thu 13/8

18:15-10:45

1 stop11h 30m

£1,029
Fastest return journey

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Wed 29/7

12:15-19:35

1 stop12h 20m

Washington, D.C. Dulles Intl

Sun 9/8

18:15-10:30

1 stop11h 15m

£1,072

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Tue 14/7

07:00-19:00

2 stops17h 00m

Washington, D.C. Dulles Intl

Thu 16/7

17:45-13:00

2 stops14h 15m

£1,121

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Mon 20/7

07:45-16:05

1 stop13h 20m

Washington, D.C. Dulles Intl

Wed 19/8

21:45-16:40

1 stop13h 55m

£1,139

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 2/8

07:35-19:25

2 stops16h 50m

Washington, D.C. Dulles Intl

Sun 16/8

20:55-18:50

2 stops16h 55m

£1,171

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 9/8

07:35-19:25

2 stops16h 50m

Washington, D.C. Dulles Intl

Sat 22/8

17:40-10:15

1 stop11h 35m

£1,265

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 9/8

07:35-19:25

2 stops16h 50m

Washington, D.C. Dulles Intl

Sat 15/8

17:40-10:15

1 stop11h 35m

£1,272

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 7/8

11:20-19:35

1 stop13h 15m

Washington, D.C. Dulles Intl

Fri 14/8

20:55-19:20

2 stops41h 25m

£1,911

Flights are sorted by cheapest return 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 Wednesday. momondo users have found tickets for Wednesday departures for as low as £579. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from London Southend Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £622.

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

At midday 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 £584. Flying to Washington, D.C. at midday is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly in the morning, with an average ticket price of £593. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 return 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.

Fastest flight time

13h 00m

Direct flights

None
The fastest flight from London Southend Airport to Washington, D.C. takes 13h 00m
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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Frequently asked questions about flying from London Southend Airport to Washington, D.C.

  • How far is London Southend to Washington, D.C. by plane?

    The distance between London Southend and Washington, D.C. is about 3694.1 mi. Typically, this will take 13h 00m by plane in normal conditions.

  • 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. refresh daily.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
College Park
Springfield
Fairfax
Arlington
Gettysburg
Linthicum Heights
National Harbor
Ellicott City
Cambridge
Glen Burnie
Westminster
Laurel
Lutherville Timonium
Lexington Park
Owings Mills
Woodbridge
Bethesda
Silver Spring
Rockville

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Washington, D.C.. momondo saves you time and could save you money on your trip.

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 offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Washington, D.C..

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.

An easier way to manage your Washington, D.C. trip

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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