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Cheap flights from London Southend Airport to Washington, D.C. Dulles Intl Airport from £409

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEN — IAD
8 Jul — 15 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Southend to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Southend to Dulles Intl
Explore the most affordable flight options available from Southend to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 June 2026.

Wed 22/712:15
SEN
-
IAD
2 stops15h 00m
Multiple Airlines
Wed 5/820:30
IAD
-
SEN
2 stops15h 10m
Multiple Airlines
Deal found 7/6£759
Tue 25/806:30
SEN
-
IAD
2 stops19h 54m
Multiple Airlines
Mon 31/815:45
IAD
-
SEN
2 stops14h 35m
Multiple Airlines
Deal found 7/6£837
Wed 17/608:25
SEN
-
IAD
2 stops17h 10m
Multiple Airlines
Fri 3/722:50
IAD
-
SEN
2 stops17h 55m
Multiple Airlines
Deal found 6/6£911
Wed 15/707:05
SEN
-
IAD
2 stops37h 05m
Multiple Airlines
Wed 29/718:15
IAD
-
SEN
1 stop17h 25m
Multiple Airlines
Deal found 6/6£971
Mon 20/716:00
SEN
-
IAD
2 stops33h 35m
Multiple Airlines
Mon 27/721:45
IAD
-
SEN
1 stop33h 00m
Multiple Airlines
Deal found 5/6£1,051
Tue 30/607:00
SEN
-
IAD
2 stops17h 00m
Multiple Airlines
Thu 9/717:45
IAD
-
SEN
2 stops14h 15m
Multiple Airlines
Deal found 7/6£1,133
Sun 5/707:35
SEN
-
IAD
2 stops16h 40m
Multiple Airlines
Sun 5/723:20
IAD
-
SEN
2 stops14h 30m
Multiple Airlines
Deal found 3/6£1,250
Fri 26/611:20
SEN
-
IAD
1 stop13h 15m
Multiple Airlines
Thu 2/718:15
IAD
-
SEN
1 stop11h 30m
Multiple Airlines
Deal found 7/6£1,252
Tue 16/607:00
SEN
-
IAD
2 stops17h 00m
Multiple Airlines
Tue 16/622:20
IAD
-
SEN
2 stops19h 00m
Multiple Airlines
Deal found 5/6£1,253

Find flight deals from Southend to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Southend (SEN) to Dulles Intl (IAD). 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 8 June 2026.

Round-trip from

£759

One-way from

£409

Popular in

June

Cheapest in

February

Average price

£595
22/7-5/8
  • 22/7-5/8
  • 4 total stops
  • 30h 10m total
  • London to Washington, D.C.
Search Deals
5/10
  • 5/10
  • 2 total stops
  • 32h 35m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£43 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southend to Dulles Intl 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 8 June 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 return flight

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Wed 22/7

12:15-19:35

1 stop12h 20m

Washington, D.C. Dulles Intl

Wed 5/8

21:45-16:40

1 stop13h 55m

£947

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Mon 20/7

16:00-20:35

2 stops33h 35m

Washington, D.C. Dulles Intl

Mon 27/7

21:45-11:45

1 stop33h 00m

£1,051

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Tue 30/6

07:00-19:00

2 stops17h 00m

Washington, D.C. Dulles Intl

Thu 9/7

17:45-13:00

2 stops14h 15m

£1,133

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 5/7

07:35-19:15

2 stops16h 40m

Washington, D.C. Dulles Intl

Sun 5/7

23:20-18:50

2 stops14h 30m

£1,250
Fastest return journey

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 26/6

11:20-19:35

1 stop13h 15m

Washington, D.C. Dulles Intl

Thu 2/7

18:15-10:45

1 stop11h 30m

£1,252

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sun 2/8

07:35-15:35

1 stop13h 00m

Washington, D.C. Dulles Intl

Sun 9/8

21:45-18:50

2 stops16h 05m

£1,256

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Wed 15/7

12:15-16:05

1 stop32h 50m

Washington, D.C. Dulles Intl

Wed 29/7

21:45-16:40

1 stop13h 55m

£1,975
Cheapest one-way

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Tue 3/11

15:55-19:05

3 stops32h 10m

£410

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Thu 17/9

17:15-19:25

2 stops31h 10m

£423

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Tue 7/7

06:30-15:10

2 stops37h 40m

£423

Flights are sorted by cheapest return flights first.

Deals found on 5/6

Showing 1-10 of 17 resultsSorted by cheapest first
1
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Best time to book a flight from Southend to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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.

Related info for your journey

Find useful and relevant information for your journey from Southend to Dulles Intl. 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 Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Southend to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Southend to Dulles Intl?

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

  • Can I find deals for business class flights from Southend to Dulles Intl?

    Yes. Cheapflights offers flight deals from Southend to Dulles Intl 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. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Alexandria
Sterling

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Why should you use Cheapflights to find cheap flight tickets from Southend to Dulles Intl?

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Can Cheapflights find flights from Southend to Dulles Intl with no change fees?

Need flexible booking options for your flight to Dulles Intl from Southend? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Southend to Dulles Intl become cheaper?

Of course! You can now track prices for flights from Southend to Dulles Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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