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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Stansted Airport to Washington.

What documentation or ID do you need to fly to Washington?

The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£378 Cheap Flights from London Stansted Airport to State of Washington in 2026

Find the cheapest flights from London Stansted Airport to Washington

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

07:00 - 17:55STN London Stansted-SEA Seattle/Tacoma Intl

18h 55m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl

19:00 - 23:20SEA Seattle/Tacoma Intl-STN London Stansted

20h 20m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

£491Multiple Airlines

Wed, 7 Oct - Sun, 18 Oct

05:55 - 17:00STN London Stansted-SEA Seattle/Tacoma Intl

19h 05m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl

14:35 - 16:55SEA Seattle/Tacoma Intl-STN London Stansted

18h 20m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

£508Multiple Airlines

Fri, 6 Nov - Sun, 8 Nov

10:15 - 12:20STN London Stansted-SEA Seattle/Tacoma Intl

34h 05m2 stops Gothenburg Landvetter Frankfurt am Main

14:10 - 19:25SEA Seattle/Tacoma Intl-STN London Stansted

21h 15m2 stops Frankfurt am Main Gothenburg Landvetter

£512Multiple Airlines

Wed, 7 Oct - Wed, 14 Oct

05:55 - 17:00STN London Stansted-SEA Seattle/Tacoma Intl

19h 05m2 stops Berlin Brandenburg Reykjavik Keflavik Intl

14:35 - 21:45SEA Seattle/Tacoma Intl-STN London Stansted

23h 10m2 stops Reykjavik Keflavik Intl Berlin Brandenburg

£523Multiple Airlines

Tue, 22 Dec - Tue, 5 Jan

22:05 - 13:45STN London Stansted-SEA Seattle/Tacoma Intl

23h 40m1 stop Kastrup Copenhagen

15:55 - 19:25SEA Seattle/Tacoma Intl-STN London Stansted

43h 30m2 stops Kastrup Copenhagen Gothenburg Landvetter

£531Multiple Airlines

Thu, 1 Oct - Tue, 6 Oct

05:55 - 20:40STN London Stansted-SEA Seattle/Tacoma Intl

22h 45m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl

14:35 - 21:35SEA Seattle/Tacoma Intl-STN London Stansted

23h 00m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

£532Multiple Airlines

Sat, 24 Oct - Sun, 1 Nov

07:00 - 20:40STN London Stansted-SEA Seattle/Tacoma Intl

21h 40m2 stops Oslo Gardermoen Reykjavik Keflavik Intl

15:40 - 00:20SEA Seattle/Tacoma Intl-STN London Stansted

24h 40m2 stops Reykjavik Keflavik Intl Oslo Gardermoen

£533Multiple Airlines

Thu, 15 Oct - Mon, 19 Oct

07:10 - 13:45STN London Stansted-SEA Seattle/Tacoma Intl

14h 35m1 stop Kastrup Copenhagen

15:55 - 11:45SEA Seattle/Tacoma Intl-STN London Stansted

35h 50m2 stops Kastrup Copenhagen Gothenburg Landvetter

£533Multiple Airlines

Tue, 6 Oct - Sun, 11 Oct

05:55 - 13:45STN London Stansted-SEA Seattle/Tacoma Intl

15h 50m1 stop Kastrup Copenhagen

15:55 - 11:45SEA Seattle/Tacoma Intl-STN London Stansted

35h 50m2 stops Kastrup Copenhagen Gothenburg Landvetter

£533Multiple Airlines

Sat, 10 Oct - Sun, 11 Oct

07:10 - 13:45STN London Stansted-SEA Seattle/Tacoma Intl

14h 35m1 stop Kastrup Copenhagen

15:55 - 21:20SEA Seattle/Tacoma Intl-STN London Stansted

45h 25m2 stops Kastrup Copenhagen Gothenburg Landvetter

£536Multiple Airlines

Tue, 6 Oct - Sat, 10 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

22:00 - 09:40STN London Stansted-SEA Seattle/Tacoma Intl

43h 40m2 stops Dublin Calgary

15:55 - 07:40SEA Seattle/Tacoma Intl-STN London Stansted

31h 45m1 stop Kastrup Copenhagen

£601Multiple Airlines

Thu, 17 Sep - Sat, 3 Oct

16:15 - 18:45STN London Stansted-SEA Seattle/Tacoma Intl

34h 30m2 stops Dublin Calgary

15:55 - 07:40SEA Seattle/Tacoma Intl-STN London Stansted

31h 45m1 stop Kastrup Copenhagen

£602Multiple Airlines

Thu, 17 Sep - Sat, 3 Oct

22:00 - 09:40STN London Stansted-SEA Seattle/Tacoma Intl

43h 40m2 stops Dublin Calgary

15:55 - 07:40SEA Seattle/Tacoma Intl-STN London Stansted

31h 45m1 stop Kastrup Copenhagen

£603Multiple Airlines

Thu, 17 Sep - Sat, 3 Oct

06:30 - 18:45STN London Stansted-SEA Seattle/Tacoma Intl

20h 15m2 stops Dublin Calgary

15:55 - 06:45SEA Seattle/Tacoma Intl-STN London Stansted

30h 50m1 stop Kastrup Copenhagen

£630Multiple Airlines

Tue, 15 Sep - Sun, 20 Sep

16:15 - 18:45STN London Stansted-SEA Seattle/Tacoma Intl

34h 30m2 stops Dublin Calgary

15:55 - 07:40SEA Seattle/Tacoma Intl-STN London Stansted

31h 45m1 stop Kastrup Copenhagen

£630Multiple Airlines

Thu, 17 Sep - Sat, 3 Oct

16:15 - 18:45STN London Stansted-SEA Seattle/Tacoma Intl

34h 30m2 stops Dublin Calgary

15:55 - 07:40SEA Seattle/Tacoma Intl-STN London Stansted

31h 45m1 stop Kastrup Copenhagen

£632Multiple Airlines

Thu, 17 Sep - Sat, 3 Oct

06:30 - 18:45STN London Stansted-SEA Seattle/Tacoma Intl

20h 15m2 stops Dublin Calgary

15:35 - 20:10SEA Seattle/Tacoma Intl-STN London Stansted

21h 35m2 stops Reykjavik Keflavik Intl Glasgow Intl

£664Multiple Airlines

Tue, 15 Sep - Sat, 31 Oct

06:30 - 18:45STN London Stansted-SEA Seattle/Tacoma Intl

20h 15m2 stops Dublin Calgary

19:00 - 22:40SEA Seattle/Tacoma Intl-STN London Stansted

19h 40m2 stops Reykjavik Keflavik Intl Glasgow Intl

£675Multiple Airlines

Tue, 15 Sep - Tue, 22 Sep

22:00 - 09:40STN London Stansted-SEA Seattle/Tacoma Intl

43h 40m2 stops Dublin Calgary

15:55 - 00:05SEA Seattle/Tacoma Intl-STN London Stansted

24h 10m1 stop Kastrup Copenhagen

£679Multiple Airlines

Thu, 17 Sep - Sat, 3 Oct

13:15 - 18:45STN London Stansted-SEA Seattle/Tacoma Intl

37h 30m2 stops Dublin Calgary

15:55 - 00:05SEA Seattle/Tacoma Intl-STN London Stansted

24h 10m1 stop Kastrup Copenhagen

£679Multiple Airlines

Thu, 17 Sep - Sat, 3 Oct

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Wed 7/10

07:00-17:55

2 stops18h 55m

Seattle/Tacoma Intl

Sun 18/10

19:00-23:20

2 stops20h 20m

£491

Fastest return journey

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Fri 6/11

05:55-17:00

2 stops19h 05m

Seattle/Tacoma Intl

Sun 8/11

14:35-16:55

2 stops18h 20m

£508

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Wed 7/10

10:15-12:20

2 stops34h 05m

Seattle/Tacoma Intl

Wed 14/10

14:10-19:25

2 stops21h 15m

£512

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Tue 22/12

05:55-17:00

2 stops19h 05m

Seattle/Tacoma Intl

Tue 5/1

14:35-21:45

2 stops23h 10m

£523

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Thu 1/10

22:05-13:45

1 stop23h 40m

Seattle/Tacoma Intl

Tue 6/10

15:55-19:25

2 stops43h 30m

£531

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Sat 24/10

05:55-20:40

2 stops22h 45m

Seattle/Tacoma Intl

Sun 1/11

14:35-21:35

2 stops23h 00m

£532

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Thu 15/10

07:00-20:40

2 stops21h 40m

Seattle/Tacoma Intl

Mon 19/10

15:40-00:20

2 stops24h 40m

£533

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Tue 6/10

07:10-13:45

1 stop14h 35m

Seattle/Tacoma Intl

Sun 11/10

15:55-11:45

2 stops35h 50m

£533

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Sat 10/10

05:55-13:45

1 stop15h 50m

Seattle/Tacoma Intl

Sun 11/10

15:55-11:45

2 stops35h 50m

£533

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Tue 6/10

07:10-13:45

1 stop14h 35m

Seattle/Tacoma Intl

Sat 10/10

15:55-21:20

2 stops45h 25m

£536

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

What is the cheapest airline that flies from London Stansted to Washington?

Lufthansa and Turkish Airlines are the most popular carriers operating from London Stansted to Washington

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

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

Best price found	£378
Fastest flight time	13h 10m
Direct flights	None

The best one-way flight to State of Washington from London Stansted Airport in the past 72 hours is £378. The best return flight deal from London Stansted Airport to State of Washington found on momondo in the last 72 hours is £491.

The fastest flight from London Stansted Airport to State of Washington takes 13h 10m

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

Search flight deals

Frequently asked questions about flying from London Stansted Airport to Washington

When did momondo last update prices for flights from London Stansted Airport to Washington?
Prices for flights from London Stansted Airport to Washington refresh daily.
How old do you have to be to fly from London Stansted Airport to Washington?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Stansted Airport to Washington.
What documentation or ID do you need to fly to Washington?
The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Washington . Millions of users trust and use momondo every year so you are in good hands.

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

Flights from London to Washington with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Washington?

Once all potential London to Washington 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 London to Washington right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Washington now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington and let you know when they change.