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Cheap flights from London Southend Airport to Washington from £388

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 18/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEN — SEA
13 Sep — 20 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Southend to Washington

Enter your travel dates to find the best prices.

Cheapest flights from Southend to Washington
Explore the most affordable flight options available from Southend to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

Tue 15/906:30 -
3 stops35h 10m
Thu 15/1019:00 -
2 stops16h 35m
Deal found 13/8£599
Tue 15/906:30 -
3 stops35h 10m
Thu 24/919:00 -
2 stops16h 35m
Deal found 13/8£675
Thu 3/913:55 -
2 stops31h 50m
Tue 22/915:55 -
2 stops19h 45m
Deal found 11/8£810
Thu 10/910:10 -
3 stops20h 37m
Thu 17/913:30 -
1 stop13h 15m
Deal found 11/8£1,032
Thu 8/1010:10 -
1 stop15h 37m
Wed 21/1013:45 -
2 stops15h 15m
Deal found 13/8£1,090
Sun 18/1007:25 -
2 stops17h 45m
Sat 24/1019:10 -
2 stops16h 35m
Deal found 13/8£1,158
Thu 17/907:20 -
2 stops18h 35m
Thu 24/913:30 -
1 stop13h 15m
Deal found 13/8£1,186
Thu 24/907:20 -
1 stop17h 39m
Thu 1/1019:00 -
2 stops42h 45m
Deal found 10/8£2,167

Find flight deals from Southend to Washington

Keep the following information in mind while searching for Southend to Washington flight deals. Data was last updated 14 August 2026.

Round-trip from

£599

One-way from

£388

Popular in

December

Cheapest in

February

Average price

£620
15/9-15/10
  • 15/9-15/10
  • 5 total stops
  • 51h 45m total
  • London to Washington
Search Deals
18/10
  • 18/10
  • 2 total stops
  • 38h 10m total
  • London to Washington
Search Deals
High demand for flights, 1% potential price rise
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 August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southend to Washington 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 14 August 2026.
Use the filters below to find and compare flights from London Southend Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Tue 15/9

06:30-09:40

3 stops35h 10m

Seattle/Tacoma Intl

Thu 15/10

19:00-19:35

2 stops16h 35m

£599

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Thu 3/9

13:55-13:45

2 stops31h 50m

Seattle/Tacoma Intl

Tue 22/9

15:55-19:40

2 stops19h 45m

£810

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Tue 15/9

06:30-09:40

3 stops35h 10m

Seattle/Tacoma Intl

Thu 24/9

13:30-10:45

1 stop13h 15m

£841

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Thu 10/9

10:10-22:47

3 stops20h 37m

Seattle/Tacoma Intl

Thu 17/9

13:30-10:45

1 stop13h 15m

£1,032
Fastest return journey

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Thu 8/10

10:10-17:47

1 stop15h 37m

Seattle/Tacoma Intl

Wed 21/10

13:45-13:00

2 stops15h 15m

£1,090

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Thu 24/9

07:20-16:59

1 stop17h 39m

Seattle/Tacoma Intl

Thu 1/10

19:00-21:45

2 stops42h 45m

£2,167
Cheapest one-way

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Sun 18/10

11:00-17:10

2 stops38h 10m

£388

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Mon 14/9

11:10-18:45

2 stops39h 35m

£411

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Fri 4/9

16:55-09:40

3 stops48h 45m

£420

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Thu 3/9

10:10-09:40

3 stops55h 30m

£424

Flights are sorted by cheapest return flights first.

Deals found on 11/8

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Southend to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington 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

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. 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 that include hotel bookings?

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

  • How can I find direct flights from Southend to Washington?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Southend to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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How does Cheapflights help users find flights from Southend to Washington?

When you search for this flight from Southend to Washington, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Certainly. Search results for flights to Washington from Southend shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington from Southend today and book when prices fit your budget.

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