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Cheap flights from London Southend Airport to Washington, D.C. from $556

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 6/2. 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
11:10 am - 7:35 pm
SEN
-
IAD
13h 25m
1 stop
Multiple Airlines Logo
9:45 pm - 4:40 pm
IAD
-
SEN
13h 55m
1 stop
$1,019Multiple Airlines
Mon, Jun 15 - Wed, Jun 24
Multiple Airlines Logo
8:10 am - 4:05 pm
SEN
-
IAD
12h 55m
1 stop
Multiple Airlines Logo
6:15 pm - 10:30 am
IAD
-
SEN
11h 15m
1 stop
$1,057Multiple Airlines
Fri, Jun 12 - Sun, Jun 14
Multiple Airlines Logo
7:25 am - 4:05 pm
SEN
-
IAD
13h 40m
1 stop
Multiple Airlines Logo
6:15 pm - 10:30 am
IAD
-
SEN
11h 15m
1 stop
$1,098Multiple Airlines
Sun, Jun 7 - Sun, Jun 14
Multiple Airlines Logo
7:55 am - 7:35 pm
SEN
-
IAD
16h 40m
1 stop
Multiple Airlines Logo
6:15 pm - 10:25 am
IAD
-
SEN
11h 10m
1 stop
$1,119Multiple Airlines
Sat, Jun 6 - Sat, Jun 13
Multiple Airlines Logo
10:10 am - 7:35 pm
SEN
-
IAD
14h 25m
1 stop
Multiple Airlines Logo
6:15 pm - 10:25 am
IAD
-
SEN
11h 10m
1 stop
$1,166Multiple Airlines
Thu, May 21 - Sat, May 30
Multiple Airlines Logo
10:10 am - 7:35 pm
SEN
-
IAD
14h 25m
1 stop
Multiple Airlines Logo
6:15 pm - 10:25 am
IAD
-
SEN
11h 10m
1 stop
$1,172Multiple Airlines
Thu, May 21 - Sat, May 30
Multiple Airlines Logo
11:10 am - 7:35 pm
SEN
-
IAD
13h 25m
1 stop
Multiple Airlines Logo
6:15 pm - 10:30 am
IAD
-
SEN
11h 15m
1 stop
$1,186Multiple Airlines
Mon, Jun 22 - Sun, Jun 28
Multiple Airlines Logo
7:50 pm - 7:20 pm
SEN
-
IAD
28h 30m
2 stops
Multiple Airlines Logo
8:30 pm - 7:20 pm
IAD
-
SEN
17h 50m
2 stops
$1,236Multiple Airlines
Sun, Aug 23 - Sat, Aug 29
Multiple Airlines Logo
10:10 am - 7:35 pm
SEN
-
IAD
14h 25m
1 stop
Multiple Airlines Logo
9:45 pm - 7:20 pm
IAD
-
SEN
16h 35m
1 stop
$1,255Multiple Airlines
Thu, Jun 18 - Sat, Jun 27
Multiple Airlines Logo
10:10 am - 7:35 pm
SEN
-
IAD
14h 25m
1 stop
Multiple Airlines Logo
9:45 pm - 7:20 pm
IAD
-
SEN
16h 35m
1 stop
$1,260Multiple Airlines
Thu, Jun 18 - Sat, Jun 27

momondo Fare Finder

 
Customize your flight search to find flights from London Southend Airport to Washington, D.C. Dulles Intl Airport 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 May 10, 2026.
Use the filters below to find and compare flights from London Southend Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Mon 6/15

11:10 am-7:35 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Wed 6/24

9:45 pm-4:40 pm

1 stop13h 55m

$1,019
Quickest round-trip

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 6/12

8:10 am-4:05 pm

1 stop12h 55m

Washington, D.C. Dulles Intl

Sun 6/14

6:15 pm-10:30 am

1 stop11h 15m

$1,057

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 6/7

7:25 am-4:05 pm

1 stop13h 40m

Washington, D.C. Dulles Intl

Sun 6/14

6:15 pm-10:30 am

1 stop11h 15m

$1,098

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 6/6

7:55 am-7:35 pm

1 stop16h 40m

Washington, D.C. Dulles Intl

Sat 6/13

6:15 pm-10:25 am

1 stop11h 10m

$1,119

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Thu 5/21

10:10 am-7:35 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Sat 5/30

6:15 pm-10:25 am

1 stop11h 10m

$1,166

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Thu 5/21

10:10 am-7:35 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Sat 5/30

6:15 pm-10:25 am

1 stop11h 10m

$1,172

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Mon 6/22

11:10 am-7:35 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Sun 6/28

6:15 pm-10:30 am

1 stop11h 15m

$1,186

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 8/23

7:50 pm-7:20 pm

2 stops28h 30m

Washington, D.C. Dulles Intl

Sat 8/29

8:30 pm-7:20 pm

2 stops17h 50m

$1,236

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Thu 6/18

10:10 am-7:35 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Sat 6/27

9:45 pm-7:20 pm

1 stop16h 35m

$1,255

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Thu 6/18

10:10 am-7:35 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Sat 6/27

9:45 pm-7:20 pm

1 stop16h 35m

$1,260

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. Dulles Intl Airport

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. Dulles Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $753. 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. Dulles Intl Airport for around $858.

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

Flying to Washington, D.C. Dulles Intl Airport from London Southend Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $792 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $814 on average. Flights to Washington, D.C. Dulles Intl Airport from London Southend Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Are you open to changing your travel dates? Check out the ideal times to fly from London Southend Airport to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport (SEN to IAD) flight deals and tips

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

Fastest flight time

12h 55m

Direct flights

None
The fastest flight from London Southend Airport to Washington, D.C. Dulles Intl Airport takes 12h 55m
There are no direct flights from London Southend Airport to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from London Southend Airport to Washington, D.C. Dulles Intl Airport.
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Frequently asked questions about flying from London Southend Airport to Washington, D.C. Dulles Intl Airport

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

    London Southend and Washington, D.C. Dulles Intl are 3709.0 mi apart from one another. A reasonable flight in good conditions will take 12h 55m.

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

    Prices for flights from London Southend Airport to Washington, D.C. Dulles Intl Airport are updated daily.

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

    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. Dulles Intl Airport.

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

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted 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
Winchester
Waldorf
Woodbridge
Laurel
Gaithersburg
Colonial Beach
Towson
Fredericksburg
Silver Spring
Rockville
Manassas
Sterling
Linthicum Heights
Tysons
Bethesda
Springfield

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from London.

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 simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from London and alert you when they change.

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