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Cheap flights from London Southend Airport to Washington from £397

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEN — SEA
22 May — 29 May1
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 22 April 2026.

Thu 11/610:10
SEN
-
SEA
2 stops18h 30m
Multiple Airlines
Wed 24/615:40
SEA
-
SEN
2 stops17h 00m
Multiple Airlines
Deal found 19/4£716
Sat 4/707:55
SEN
-
SEA
2 stops18h 00m
Multiple Airlines
Sat 11/719:00
SEA
-
SEN
2 stops16h 20m
Multiple Airlines
Deal found 20/4£1,090
Sat 18/408:40
SEN
-
SEA
2 stops20h 00m
Multiple Airlines
Sat 25/415:40
SEA
-
SEN
3 stops22h 20m
Multiple Airlines
Deal found 17/4£1,686
Wed 22/417:30
SEN
-
SEA
2 stops30h 30m
Multiple Airlines
Wed 29/418:40
SEA
-
SEN
1 stop32h 05m
Multiple Airlines
Deal found 22/4£1,821

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 22 April 2026.

Round-trip from

£716

One-way from

£397

Popular in

July

Cheapest in

February

Average price

£539
11/6-24/6
  • 11/6-24/6
  • 4 total stops
  • 35h 30m total
  • London to Washington
Search Deals
14/10
  • 14/10
  • 3 total stops
  • 33h 50m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£51 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 22 April 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 - SEA

SENSEA

London Southend

Thu 11/6

10:10-20:40

2 stops18h 30m

Seattle/Tacoma Intl

Wed 24/6

15:40-16:40

2 stops17h 00m

£716
Fastest return journey

LondonSeattle

SEN - SEA

SENSEA

London Southend

Sat 4/7

07:55-17:55

2 stops18h 00m

Seattle/Tacoma Intl

Sat 11/7

19:00-19:20

2 stops16h 20m

£1,090
Cheapest one-way

LondonSeattle

SEN - SEA

SENSEA

London Southend

Mon 15/6

16:55-18:45

3 stops33h 50m

£401

LondonSeattle

SEN - SEA

SENSEA

London Southend

Thu 3/9

17:15-16:00

2 stops30h 45m

£425

LondonSeattle

SEN - SEA

SENSEA

London Southend

Wed 20/5

08:25-09:40

2 stops33h 15m

£426

LondonSeattle

SEN - SEA

SENSEA

London Southend

Thu 7/5

10:10-22:40

3 stops20h 30m

£437

LondonSeattle

SEN - SEA

SENSEA

London Southend

Sat 9/5

16:50-09:29

3 stops48h 39m

£438

LondonSeattle

SEN - SEA

SENSEA

London Southend

Mon 11/5

11:10-19:52

2 stops40h 42m

£441

LondonSeattle

SEN - SEA

SENSEA

London Southend

Tue 19/5

06:30-10:38

2 stops36h 08m

£456

LondonSeattle

SEN - SEA

SENSEA

London Southend

Thu 20/8

20:40-17:10

3 stops28h 30m

£459

Flights are sorted by cheapest return flights first.

Deals found on 18/4

Showing 1-10 of 14 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.

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Alternative routes for Southend to Washington

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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.

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

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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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