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Southend

$333+ Cheap flights from Dulles Intl (IAD) to Southend (SEN)

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SEN
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
1 adult, Economy
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Cheap flight deals from Dulles Intl to Southend

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

This Mytrip deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/199:55 am
IAD
-
SEN
2 stops22h 55m
Multiple Airlines
Sun 3/226:05 pm
SEN
-
IAD
2 stops31h 00m
Multiple Airlines
Deal found 2/17$710
This Booking.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/197:50 pm
IAD
-
SEN
1 stop13h 00m
Multiple Airlines
Mon 3/237:15 am
SEN
-
IAD
1 stop17h 15m
Multiple Airlines
Deal found 2/19$867
This Booking.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/84:30 pm
IAD
-
SEN
2 stops18h 20m
Multiple Airlines
Tue 3/177:35 am
SEN
-
IAD
2 stops16h 51m
Multiple Airlines
Deal found 2/20$1,038
This Mytrip deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/288:30 pm
IAD
-
SEN
2 stops19h 20m
Multiple Airlines
Wed 3/47:10 am
SEN
-
IAD
2 stops15h 05m
Multiple Airlines
Deal found 2/20$1,067
This Mytrip deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/155:45 pm
IAD
-
SEN
2 stops17h 05m
Multiple Airlines
Sat 3/217:15 am
SEN
-
IAD
2 stops17h 15m
Multiple Airlines
Deal found 2/17$1,543
This Mytrip deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/1411:55 pm
IAD
-
SEN
2 stops16h 15m
Multiple Airlines
Sat 3/217:15 am
SEN
-
IAD
2 stops17h 11m
Multiple Airlines
Deal found 2/18$1,599
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:20 pm
IAD
-
SEN
2 stops30h 35m
Multiple Airlines
Mon 4/134:55 pm
SEN
-
IAD
1 stop27h 40m
Multiple Airlines
Deal found 2/20$2,363

Find flight deals from Dulles Intl to Southend

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Southend (SEN). 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 February 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$698
(Mytrip)

One-way from

$333
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$644
Provider with most accurate pricing for Washington, D.C. (WAS)-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London (LON) flights.
Search Deals
From Washington, D.C. Dulles Intl to London Southend
Search Deals
One-way flight from Washington, D.C. Dulles Intl to London Southend
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($97 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Southend 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 2,558,603 searches. Data last updated February 21, 2026.
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

Dulles Intl

Fly to

Southend

Route

Depart

Return

Price

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Thu 3/19

9:55 am-12:50 pm

2 stops22h 55m

London Southend

Sun 3/22

6:05 pm-9:05 pm

2 stops31h 00m

$710

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Thu 3/19

7:50 pm-12:50 pm

1 stop13h 00m

London Southend

Mon 3/23

7:15 am-8:30 pm

1 stop17h 15m

$867

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 3/8

4:30 pm-2:50 pm

2 stops18h 20m

London Southend

Tue 3/17

7:35 am-8:26 pm

2 stops16h 51m

$1,038

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 3/15

5:45 pm-2:50 pm

2 stops17h 05m

London Southend

Sat 3/21

7:15 am-8:30 pm

2 stops17h 15m

$1,543

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sat 3/14

11:55 pm-8:10 pm

2 stops16h 15m

London Southend

Sat 3/21

7:15 am-8:26 pm

2 stops17h 11m

$1,599

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Mon 4/6

8:20 pm-7:55 am

2 stops30h 35m

London Southend

Mon 4/13

4:55 pm-3:35 pm

1 stop27h 40m

$2,363

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 4/12

8:30 pm-7:50 pm

3 stops42h 20m

$352

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Wed 8/19

5:15 pm-9:25 pm

2 stops23h 10m

$359

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 5/3

8:30 pm-11:20 am

3 stops33h 50m

$363

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 3/22

8:40 pm-11:00 pm

3 stops22h 20m

$371

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 16 results
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Best time to book a flight from Dulles Intl to Southend

Have a flexible travel schedule? Discover the best time to fly to Southend from Dulles Intl with our price prediction graph.
Estimated round-trip 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 Dulles Intl to Southend. 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 Dulles Intl to Southend that include hotel bookings?

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

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

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

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

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

Traveling to a place near London Southend Airport?

Book flights to London Southend Airport if you plan to visit one of these locations
Ilford
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Kingston upon Thames
Eastbourne
Sutton
Slough

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