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Cheap flights from London Southend Airport to Washington, D.C. Dulles Intl Airport from £433

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEN — IAD
11 Jan — 18 Jan1
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 12 December 2025.

Sat 20/1207:15SEN - IAD
2 stops17h 15mMultiple Airlines
Sat 27/1217:05IAD - SEN
2 stops22h 05mMultiple Airlines
Deal found 11/12£1,187
Fri 26/1206:40SEN - IAD
1 stop14h 25mMultiple Airlines
Fri 2/118:05IAD - SEN
1 stop10h 55mMultiple Airlines
Deal found 10/12£1,217
Wed 17/1210:35SEN - IAD
2 stops33h 40mMultiple Airlines
Sun 21/1218:50IAD - SEN
1 stop10h 40mMultiple Airlines
Deal found 12/12£1,436
Wed 31/1207:10SEN - IAD
2 stops17h 20mMultiple Airlines
Wed 31/1222:55IAD - SEN
2 stops17h 05mMultiple Airlines
Deal found 11/12£1,659

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 12 December 2025.

Round-trip from

£1,217

One-way from

£433

Popular in

July

Cheapest in

February

Average price

£596
26/12-2/1
  • 26/12-2/1
  • 2 total stops
  • 25h 20m total
  • London to Washington, D.C.
Search Deals
10/6
  • 10/6
  • 2 total stops
  • 27h 40m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£59 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 December 2025
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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 12 December 2025.
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

Southend

Fly to

Dulles Intl

Route

Depart

Return

Price

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 26/12

06:40-16:05

1 stop14h 25m

Washington, D.C. Dulles Intl

Fri 2/1

18:05-10:00

1 stop10h 55m

£1,217

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Wed 31/12

07:10-19:30

2 stops17h 20m

Washington, D.C. Dulles Intl

Wed 31/12

22:55-21:00

2 stops17h 05m

£1,659

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Wed 10/6

20:15-18:55

2 stops27h 40m

£433

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Thu 18/12

06:30-21:00

3 stops43h 30m

£439

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 28/2

20:00-15:35

3 stops24h 35m

£441

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Mon 12/1

17:30-14:35

3 stops26h 05m

£448

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 16/1

07:35-18:30

2 stops15h 55m

£459

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Sat 4/4

08:40-20:35

2 stops40h 55m

£472

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 26/12

16:50-18:45

3 stops30h 55m

£487

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Wed 17/12

17:20-15:15

3 stops26h 55m

£489

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 11 results
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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
Woodbridge
Arlington
Alexandria
College Park

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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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