In terms of precipitation, rainfall in State of Washington ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit State of Washington when rainfall is around 18.0 mm.

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest time of day to fly from SEN to WA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Southend Airport to State of Washington as you normally would.

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.

£379+ Cheap Flights from London Southend Airport to Washington

Cheap flight deals from Southend to Washington

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 16 September 2026.

Sat 21/1107:15 -

2 stops17h 45m

Sun 29/1114:35 -

2 stops16h 15m

Deal found 12/9£675

Thu 17/917:15 -

2 stops26h 00m

Sat 26/913:30 -

2 stops18h 10m

Deal found 13/9£883

Tue 27/1013:50 -

2 stops35h 20m

Tue 3/1114:35 -

1 stop20h 45m

Deal found 12/9£954

Fri 25/1214:25 -

2 stops30h 06m

Thu 31/1214:30 -

2 stops18h 45m

Deal found 14/9£995

Thu 29/1019:00 -

2 stops30h 10m

Thu 5/1114:35 -

1 stop23h 25m

Deal found 14/9£997

Thu 22/1010:10 -

1 stop15h 37m

Thu 29/1017:05 -

1 stop17h 10m

Deal found 15/9£1,004

Sat 19/1207:15 -

2 stops17h 45m

Sun 27/1214:30 -

2 stops16h 05m

Deal found 11/9£1,106

Sat 19/1207:15 -

2 stops17h 45m

Sat 2/114:35 -

2 stops19h 35m

Deal found 14/9£1,184

Tue 22/1208:15 -

2 stops16h 45m

Sat 2/114:35 -

2 stops19h 35m

Deal found 15/9£1,308

Find flight deals from Southend to Washington

Round-trip from	£675
One-way from	£379
Popular in	August
Cheapest in	February
Average price	£548

21/11-29/11
4 total stops
34h 00m total
London to Washington

Search Deals

13/11-31/12
2 total stops
28h 52m total
London to Washington

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£28 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

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

Fastest return journey

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Fri 13/11

14:55-11:47

2 stops28h 52m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£379

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Wed 7/10

20:15-18:45

3 stops30h 30m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£418

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Sun 15/11

15:55-19:45

2 stops35h 50m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£472

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Tue 20/10

06:30-15:40

2 stops41h 10m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£473

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Wed 28/10

17:20-16:55

3 stops30h 35m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£481

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Sun 4/10

20:05-10:15

3 stops46h 10m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£485

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Sun 27/9

17:30-19:49

3 stops58h 19m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£510

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Sun 18/10

17:30-16:10

3 stops30h 40m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£544

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Sat 19/9

16:50-09:40

2 stops48h 50m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£547

LondonSeattle

SEN London Southend - SEA Seattle/Tacoma Intl

SENSEA

London Southend

Sat 21/11

07:15-17:00

2 stops17h 45m

Seattle/Tacoma Intl

Sun 29/11

14:35-14:50

2 stops16h 15m

£675

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 13 resultsSorted by cheapest first

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.

SEN-SEA

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

SEN-USWA

SEN-SEA

No data available for this route at this time. Please check back soon.

Related info for your journey

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

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Fly with Cheapflights

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?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Southend to Washington for you. Better yet — we are completely free to use.

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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Cheap flights from London Southend Airport to Washington from £379

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Southend to Washington

Cheapest flights from Southend to WashingtonExplore 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 16 September 2026.

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 16 September 2026.

Best flights from Southend to WashingtonDiscover carefully curated flight deals from Southend to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Discover carefully curated flight deals from Southend to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Last-minute flights from Southend to WashingtonDiscover last-minute flight deals from Southend to Washington. Data last updated 16 September 2026 and is based on user searches.

Discover last-minute flight deals from Southend to Washington. Data last updated 16 September 2026 and is based on user searches.

One-way flights from Southend to WashingtonSearch for one-way flight options from Southend to Washington. Find affordable one-way fares based on user searches. Data last updated 16 September 2026.

Search for one-way flight options from Southend to Washington. Find affordable one-way fares based on user searches. Data last updated 16 September 2026.

Find flight deals from Southend to Washington

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Southend Airport to Washington that are best for you.

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.

Cheapflights Insights

Related info for your journey

Can I find deals for flights from Southend to Washington that include hotel bookings?

How can I find direct flights from Southend to Washington?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southend to Washington

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

Complete your trip

Complete your trip to Washington by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Southend to Washington by cabin class

Find flights from Southend to Washington, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Southend and Washington flights

Browse other Southend and Washington flight options. Last updated on 16 September 2026.

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Southend to Washington flights

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

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

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

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

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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 16 September 2026.

Best flights from Southend to Washington
Discover carefully curated flight deals from Southend to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Last-minute flights from Southend to Washington
Discover last-minute flight deals from Southend to Washington. Data last updated 16 September 2026 and is based on user searches.

One-way flights from Southend to Washington
Search for one-way flight options from Southend to Washington. Find affordable one-way fares based on user searches. Data last updated 16 September 2026.