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.

£247 Cheap Flights from Washington, D.C. Dulles Intl Airport to London Southend Airport in 2026

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

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

19:40 - 22:00IAD Washington, D.C. Dulles Intl-SEN London Southend

21h 20m2 stops Reykjavik Keflavik Intl Amsterdam Schiphol

08:15 - 18:30SEN London Southend-IAD Washington, D.C. Dulles Intl

15h 15m2 stops Amsterdam Schiphol Reykjavik Keflavik Intl

£600Multiple Airlines

Thu, 3 Dec - Tue, 8 Dec

20:20 - 19:35IAD Washington, D.C. Dulles Intl-SEN London Southend

18h 15m2 stops Kastrup Copenhagen Amsterdam Schiphol

16:50 - 17:00SEN London Southend-IAD Washington, D.C. Dulles Intl

29h 10m3 stops Amsterdam Schiphol Stockholm Arlanda Kastrup Copenhagen

£638Multiple Airlines

Sun, 27 Sep - Wed, 30 Sep

19:40 - 14:50IAD Washington, D.C. Dulles Intl-SEN London Southend

14h 10m2 stops Reykjavik Keflavik Intl Amsterdam Schiphol

07:35 - 18:30SEN London Southend-IAD Washington, D.C. Dulles Intl

15h 55m2 stops Amsterdam Schiphol Reykjavik Keflavik Intl

£648Multiple Airlines

Sun, 6 Dec - Fri, 11 Dec

19:40 - 18:35IAD Washington, D.C. Dulles Intl-SEN London Southend

17h 55m2 stops Reykjavik Keflavik Intl Paris Charles de Gaulle

07:10 - 18:30SEN London Southend-IAD Washington, D.C. Dulles Intl

16h 20m2 stops Paris Charles de Gaulle Reykjavik Keflavik Intl

£696Multiple Airlines

Wed, 9 Dec - Wed, 23 Dec

20:50 - 14:35IAD Washington, D.C. Dulles Intl-SEN London Southend

12h 45m2 stops Dublin Paris Charles de Gaulle

15:55 - 15:45SEN London Southend-IAD Washington, D.C. Dulles Intl

28h 50m2 stops Paris Charles de Gaulle Dublin

£837Multiple Airlines

Sun, 13 Dec - Sun, 27 Dec

18:15 - 10:45IAD Washington, D.C. Dulles Intl-SEN London Southend

11h 30m1 stop Paris Charles de Gaulle

10:10 - 19:35SEN London Southend-IAD Washington, D.C. Dulles Intl

14h 25m1 stop Paris Charles de Gaulle

£850Multiple Airlines

Thu, 8 Oct - Thu, 15 Oct

18:15 - 10:30IAD Washington, D.C. Dulles Intl-SEN London Southend

11h 15m1 stop Paris Charles de Gaulle

07:25 - 19:35SEN London Southend-IAD Washington, D.C. Dulles Intl

17h 10m1 stop Paris Charles de Gaulle

£1,010Multiple Airlines

Sun, 11 Oct - Sun, 18 Oct

18:15 - 10:30IAD Washington, D.C. Dulles Intl-SEN London Southend

11h 15m1 stop Paris Charles de Gaulle

07:25 - 19:35SEN London Southend-IAD Washington, D.C. Dulles Intl

17h 10m1 stop Paris Charles de Gaulle

£1,010Multiple Airlines

Sun, 11 Oct - Sun, 18 Oct

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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 Washington, D.C. Dulles Intl - SEN London Southend

IADSEN

Washington, D.C. Dulles Intl

Thu 3/12

19:40-22:00

2 stops21h 20m

London Southend

Tue 8/12

08:15-18:30

2 stops15h 15m

£600

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - SEN London Southend

IADSEN

Washington, D.C. Dulles Intl

Sun 27/9

20:20-19:35

2 stops18h 15m

London Southend

Wed 30/9

16:50-17:00

3 stops29h 10m

£638

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - SEN London Southend

IADSEN

Washington, D.C. Dulles Intl

Sun 6/12

19:40-14:50

2 stops14h 10m

London Southend

Fri 11/12

07:35-18:30

2 stops15h 55m

£648

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - SEN London Southend

IADSEN

Washington, D.C. Dulles Intl

Wed 9/12

19:40-18:35

2 stops17h 55m

London Southend

Wed 23/12

07:10-18:30

2 stops16h 20m

£696

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - SEN London Southend

IADSEN

Washington, D.C. Dulles Intl

Sun 13/12

20:50-14:35

2 stops12h 45m

London Southend

Sun 27/12

15:55-15:45

2 stops28h 50m

£837

Fastest return journey

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - SEN London Southend

IADSEN

Washington, D.C. Dulles Intl

Thu 8/10

18:15-10:45

1 stop11h 30m

London Southend

Thu 15/10

10:10-19:35

1 stop14h 25m

£850

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - SEN London Southend

IADSEN

Washington, D.C. Dulles Intl

Sun 11/10

18:15-10:30

1 stop11h 15m

London Southend

Sun 18/10

07:25-19:35

1 stop17h 10m

£1,010

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - SEN London Southend

IADSEN

Washington, D.C. Dulles Intl

Sun 11/10

18:15-10:30

1 stop11h 15m

London Southend

Sun 18/10

07:25-19:35

1 stop17h 10m

£1,010

Cheapest one-way

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - SEN London Southend

IADSEN

Washington, D.C. Dulles Intl

Mon 19/10

20:30-16:10

3 stops38h 40m

£247

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - SEN London Southend

IADSEN

Washington, D.C. Dulles Intl

Fri 11/12

19:40-22:40

3 stops22h 00m

£258

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 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

Best price found	£247
Fastest flight time	11h 15m
Direct flights	None

The best one-way flight to London Southend Airport from Washington, D.C. Dulles Intl Airport in the past 72 hours is £247. The best return flight deal from Washington, D.C. Dulles Intl Airport to London Southend Airport found on momondo in the last 72 hours is £600.

The fastest flight from Washington, D.C. Dulles Intl Airport to London Southend Airport takes 11h 15m

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.

Search flight deals

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 15m 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

Wembley

Gatwick

Milton Keynes

Southend-on-Sea

Luton

Slough

Ipswich

Maidstone

Folkestone

Hastings

Ilford

Canterbury

Chichester

Hayes

Guildford

Bedford

Harlow

Colchester

Chelmsford

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.