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Cheap flights from London Southend Airport to Washington, D.C. from £400

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEN — WAS
20 Feb — 27 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Southend to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest flights from Southend to Washington, D.C.
Explore the most affordable flight options available from Southend to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 January 2026.

Sat 7/315:00
SEN
-
IAD
3 stops35h 00m
Multiple Airlines
Sat 14/321:30
IAD
-
SEN
2 stops15h 35m
Multiple Airlines
Deal found 20/1£668
Sat 28/307:15
SEN
-
IAD
2 stops17h 10m
Multiple Airlines
Sun 5/417:25
IAD
-
SEN
2 stops21h 10m
Multiple Airlines
Deal found 19/1£757
Thu 5/306:50
SEN
-
IAD
2 stops43h 10m
Multiple Airlines
Thu 12/319:05
IAD
-
SEN
1 stop10h 05m
Multiple Airlines
Deal found 18/1£862
Wed 25/207:10
SEN
-
IAD
2 stops16h 20m
Multiple Airlines
Wed 25/220:45
IAD
-
SEN
2 stops19h 15m
Multiple Airlines
Deal found 20/1£999
Mon 2/307:15
SEN
-
IAD
1 stop14h 20m
Multiple Airlines
Sat 7/318:50
IAD
-
SEN
1 stop17h 15m
Multiple Airlines
Deal found 20/1£1,553

Find flight deals from Southend to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Southend (SEN) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 January 2026.

Round-trip from

£757

One-way from

£400

Popular in

July

Cheapest in

February

Average price

£471
28/3-5/4
  • 28/3-5/4
  • 4 total stops
  • 38h 20m total
  • London to Washington, D.C.
Search Deals
13/2
  • 13/2
  • 3 total stops
  • 28h 10m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£58 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Southend 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, Cheapflights users made 858,174 searches. Data last updated 21 January 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

Southend

Fly to

Washington, D.C.

Route

Depart

Return

Price

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 7/3

15:00-21:00

3 stops35h 00m

Washington, D.C. Dulles Intl

Sat 14/3

21:30-17:05

2 stops15h 35m

£668

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 28/3

07:15-20:25

2 stops17h 10m

Washington, D.C. Dulles Intl

Sun 5/4

17:25-19:35

2 stops21h 10m

£757

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Thu 5/3

06:50-21:00

2 stops43h 10m

Washington, D.C. Dulles Intl

Thu 12/3

19:05-09:10

1 stop10h 05m

£862

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Wed 25/2

07:10-18:30

2 stops16h 20m

Washington, D.C. Dulles Intl

Wed 25/2

20:45-21:00

2 stops19h 15m

£999

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Mon 2/3

07:15-16:35

1 stop14h 20m

Washington, D.C. Dulles Intl

Sat 7/3

18:50-17:05

1 stop17h 15m

£1,553

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 13/2

16:05-15:15

3 stops28h 10m

£400

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 14/2

06:30-21:00

3 stops43h 30m

£407

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 25/1

14:20-13:15

2 stops51h 55m

£409

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 15/2

07:10-21:00

2 stops18h 50m

£416

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Wed 11/2

07:10-20:29

3 stops18h 19m

£443

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Showing 1-10 of 11 results
1
2

Best time to book a flight from Southend to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Southend with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Southend Airport to Washington, D.C.
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Southend to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Southend to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Southend to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Southend to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southend to Washington, D.C..

  • Can I find deals for business class flights from Southend to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Southend to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park

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How does Cheapflights help users find flights from Southend to Washington, D.C.?

Cheapflights makes it easy to find Southend to Washington, D.C. flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Southend to Washington, D.C.?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Southend to Washington, D.C..

Can Cheapflights find flights from Southend to Washington, D.C. with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Southend to Washington, D.C., users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Southend to Washington, D.C. become cheaper?

Yes! Start tracking prices for Southend to Washington, D.C. flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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