When did momondo last update prices for flights from Washington to London Southend Airport?

Prices for flights from Washington to London Southend Airport are updated daily.

How old do you have to be to fly from Washington to London Southend Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to London Southend Airport.

What documentation or ID do you need to fly to London Southend Airport?

The required travel and health documents for your London Southend Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Southend Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$343 Cheap Flights from State of Washington to London Southend Airport in 2025/26

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2:35 pm - 2:50 pmSEA-SEN

16h 15m2 stops

5:25 pm - 6:00 pmSEN-SEA

31h 35m2 stops

$671Multiple Airlines

Find Deal

Sun, Mar 1 - Sun, Mar 15

8:10 am - 12:50 pmSEA-SEN

20h 40m3 stops

6:05 pm - 12:10 pmSEN-SEA

26h 05m2 stops

$700Multiple Airlines

Find Deal

Thu, Dec 4 - Thu, Dec 11

2:35 pm - 5:15 pmSEA-SEN

18h 40m2 stops

4:50 pm - 5:00 pmSEN-SEA

32h 10m2 stops

$746Multiple Airlines

Find Deal

Wed, Nov 19 - Sun, Nov 23

9:50 am - 9:00 pmPDX-SEN

27h 10m3 stops

7:10 am - 9:15 amSEN-PDX

34h 05m3 stops

$910Multiple Airlines

Find Deal

Wed, Dec 3 - Wed, Dec 10

2:35 pm - 8:10 pmSEA-SEN

21h 35m2 stops

7:15 am - 5:00 pmSEN-SEA

17h 45m2 stops

$2,513Multiple Airlines

Find Deal

Sat, Dec 20 - Sat, Dec 27

1:40 pm - 8:10 pmSEA-SEN

22h 30m2 stops

7:15 am - 5:00 pmSEN-SEA

17h 45m2 stops

$2,745Multiple Airlines

Find Deal

Sat, Dec 20 - Sat, Dec 27

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Sun 3/1

2:35 pm-2:50 pm

2 stops16h 15m

London Southend

Sun 3/15

5:25 pm-6:00 pm

2 stops31h 35m

$671

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Thu 12/4

8:10 am-12:50 pm

3 stops20h 40m

London Southend

Thu 12/11

6:05 pm-12:10 pm

2 stops26h 05m

$700

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Wed 11/19

2:35 pm-5:15 pm

2 stops18h 40m

London Southend

Sun 11/23

4:50 pm-5:00 pm

2 stops32h 10m

$746

PortlandLondon

PDX - SEN

PDXSEN

Portland

Wed 12/3

9:50 am-9:00 pm

3 stops27h 10m

London Southend

Wed 12/10

7:10 am-9:15 am

3 stops34h 05m

$910

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Sat 12/20

2:35 pm-8:10 pm

2 stops21h 35m

London Southend

Sat 12/27

7:15 am-5:00 pm

2 stops17h 45m

$2,513

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Sat 12/20

1:40 pm-8:10 pm

2 stops22h 30m

London Southend

Sat 12/27

7:15 am-5:00 pm

2 stops17h 45m

$2,745

PortlandLondon

PDX - SEN

PDXSEN

Portland

Mon 12/1

2:45 pm-10:00 am

2 stops35h 15m

$343

PortlandLondon

PDX - SEN

PDXSEN

Portland

Tue 2/10

7:38 am-10:45 pm

3 stops31h 07m

$348

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Wed 11/26

11:26 am-12:50 pm

3 stops41h 24m

$350

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Sat 11/22

11:55 am-10:30 am

3 stops38h 35m

$352

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to London Southend Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to London Southend Airport?

Flight times from State of Washington to London Southend Airport vary, but if you’re flying out of Seattle and flying into London Heathrow Airport (one of the most popular routes), then the duration is 9h 15m on average. Another popular route from State of Washington to London Southend Airport is flying from Spokane to London Heathrow Airport, which will take roughly 13h 10m. Keep in mind that layovers or delays could extend your travel time.

Cheap State of Washington to London Southend Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to London Southend Airport

Direct flights	None

There are no direct flights from State of Washington to London Southend Airport. There are no popular flight routes from State of Washington to London Southend Airport.

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When did momondo last update prices for flights from Washington to London Southend Airport?
Prices for flights from Washington to London Southend Airport are updated daily.
How old do you have to be to fly from Washington to London Southend Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to London Southend Airport.
What documentation or ID do you need to fly to London Southend Airport?
The required travel and health documents for your London Southend Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Southend Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Brentwood

Chelmsford

Wembley

Folkestone

Romford

Ilford

Cobham

Stansted

Harrow

Watford

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Can I find flights from Washington to London with flexible booking policies on momondo?

All flight searches from Washington to London on momondo can be filtered to show those which offer flexible booking policies.

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Once all potential Washington to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Washington and alert you when they change.