How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

What documentation or ID do you need to fly to London Southend Airport?

The necessary travel and health documents for your London Southend Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£317 Cheap Flights from Washington, D.C. Dulles Intl Airport to London Southend Airport in 2026

1 adult

0 bags

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to London

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

20:20 - 16:40

IAD

SEN

15h 20m

2 stops

16:50 - 17:00

SEN

IAD

29h 10m

2 stops

£665Multiple Airlines

Wed, 9 Sep - Wed, 23 Sep

23:20 - 18:50

IAD

SEN

14h 30m

2 stops

07:00 - 15:45

SEN

IAD

37h 45m

3 stops

£747Multiple Airlines

Sun, 5 Jul - Tue, 14 Jul

23:20 - 18:50

IAD

SEN

14h 30m

2 stops

07:00 - 15:45

SEN

IAD

37h 45m

3 stops

£748Multiple Airlines

Sun, 5 Jul - Tue, 14 Jul

23:20 - 18:50

IAD

SEN

14h 30m

2 stops

07:00 - 15:45

SEN

IAD

37h 45m

3 stops

£758Multiple Airlines

Sun, 5 Jul - Tue, 14 Jul

23:20 - 18:50

IAD

SEN

14h 30m

2 stops

07:00 - 15:45

SEN

IAD

37h 45m

3 stops

£761Multiple Airlines

Sun, 5 Jul - Tue, 14 Jul

23:20 - 18:50

IAD

SEN

14h 30m

2 stops

06:30 - 15:45

SEN

IAD

38h 15m

3 stops

£766Multiple Airlines

Sun, 5 Jul - Tue, 14 Jul

23:20 - 18:50

IAD

SEN

14h 30m

2 stops

06:30 - 15:45

SEN

IAD

38h 15m

3 stops

£768Multiple Airlines

Sun, 5 Jul - Tue, 14 Jul

23:20 - 18:50

IAD

SEN

14h 30m

2 stops

06:30 - 15:45

SEN

IAD

38h 15m

3 stops

£785Multiple Airlines

Sun, 5 Jul - Tue, 14 Jul

09:45 - 21:25

IAD

SEN

30h 40m

3 stops

11:00 - 15:45

SEN

IAD

33h 45m

2 stops

£836Multiple Airlines

Wed, 19 Aug - Sun, 23 Aug

15:45 - 12:50

IAD

SEN

16h 05m

2 stops

17:15 - 15:45

SEN

IAD

27h 30m

2 stops

£840Multiple Airlines

Wed, 19 Aug - Thu, 20 Aug

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to London Southend Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Wed 9/9

20:20-16:40

2 stops15h 20m

London Southend

Wed 23/9

16:50-17:00

2 stops29h 10m

£665

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 5/7

23:20-18:50

2 stops14h 30m

London Southend

Tue 14/7

07:00-15:45

3 stops37h 45m

£747

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 5/7

23:20-18:50

2 stops14h 30m

London Southend

Tue 14/7

07:00-15:45

3 stops37h 45m

£748

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 5/7

23:20-18:50

2 stops14h 30m

London Southend

Tue 14/7

07:00-15:45

3 stops37h 45m

£758

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 5/7

23:20-18:50

2 stops14h 30m

London Southend

Tue 14/7

07:00-15:45

3 stops37h 45m

£761

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 5/7

23:20-18:50

2 stops14h 30m

London Southend

Tue 14/7

06:30-15:45

3 stops38h 15m

£766

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 5/7

23:20-18:50

2 stops14h 30m

London Southend

Tue 14/7

06:30-15:45

3 stops38h 15m

£768

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 5/7

23:20-18:50

2 stops14h 30m

London Southend

Tue 14/7

06:30-15:45

3 stops38h 15m

£785

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Wed 19/8

09:45-21:25

3 stops30h 40m

London Southend

Sun 23/8

11:00-15:45

2 stops33h 45m

£836

Fastest return journey

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Wed 19/8

15:45-12:50

2 stops16h 05m

London Southend

Thu 20/8

17:15-15:45

2 stops27h 30m

£840

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Estimated return price

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

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

Fastest flight time	11h 30m
Direct flights	None

The fastest flight from Washington, D.C. Dulles Intl Airport to London Southend Airport takes 11h 30m

There are no direct flights from Washington, D.C. Dulles Intl Airport to London Southend Airport. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to London Southend Airport.

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Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to London Southend Airport

How far is Washington, D.C. Dulles Intl to London Southend by plane?
There are 3709.0 mi between Washington, D.C. Dulles Intl and London Southend. Typically, this will take 11h 30m by plane in normal conditions.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to London Southend Airport?
Prices for flights from Washington, D.C. Dulles Intl Airport to London Southend Airport are updated daily.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to London Southend Airport?
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 Washington, D.C. Dulles Intl Airport to London Southend Airport.
What documentation or ID do you need to fly to London Southend Airport?
The necessary travel and health documents for your London Southend Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to London Southend Airport

How do I get Price Alerts for flights from Washington, D.C. Dulles Intl Airport to London Southend Airport?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Washington, D.C. Dulles Intl Airport from London Southend Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.
How can I save money on flights from Washington, D.C. Dulles Intl Airport to London Southend Airport with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Eastbourne

Milton Keynes

Luton

Gatwick

Wembley

Slough

Maidstone

Ipswich

Southend-on-Sea

Canterbury

Ilford

Hayes

Guildford

Folkestone

Chelmsford

Dover

Bedford

Chichester

Harlow

Colchester

Why use momondo?

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

It is quick and easy to find Washington, D.C. to London 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 London that suits you.

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

Flights from Washington, D.C. to London 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 Washington, D.C. to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Washington, D.C..

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

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