Cheap flights from London Luton Airport to Washington from £321

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Luton Airport to Washington departing on 3/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from London Luton Airport to Washington

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:50 - 17:00
LTN
-
SEA
18h 10m
2 stops
Multiple Airlines Logo
15:35 - 17:05
SEA
-
LTN
18h 30m
2 stops
£450Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
06:50 - 17:00
LTN
-
SEA
18h 10m
2 stops
Multiple Airlines Logo
15:35 - 17:05
SEA
-
LTN
18h 30m
2 stops
£452Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
08:15 - 17:10
LTN
-
SEA
16h 55m
1 stop
Multiple Airlines Logo
18:55 - 22:50
SEA
-
LTN
19h 55m
1 stop
£491Multiple Airlines
Mon, 11 May - Mon, 18 May
Multiple Airlines Logo
06:50 - 19:20
LTN
-
SEA
19h 30m
1 stop
Multiple Airlines Logo
21:05 - 17:05
SEA
-
LTN
13h 00m
1 stop
£495Multiple Airlines
Wed, 18 Mar - Wed, 25 Mar
Multiple Airlines Logo
09:40 - 20:40
LTN
-
SEA
19h 00m
2 stops
Multiple Airlines Logo
15:40 - 21:40
SEA
-
LTN
22h 00m
2 stops
£497Multiple Airlines
Tue, 12 May - Sun, 24 May
Multiple Airlines Logo
18:40 - 19:25
LTN
-
SEA
32h 45m
2 stops
Multiple Airlines Logo
18:55 - 15:25
SEA
-
LTN
12h 30m
1 stop
£516Multiple Airlines
Mon, 13 Apr - Wed, 6 May
Multiple Airlines Logo
06:15 - 17:10
LTN
-
SEA
18h 55m
1 stop
Multiple Airlines Logo
18:55 - 15:30
SEA
-
LTN
12h 35m
1 stop
£518Multiple Airlines
Wed, 1 Apr - Tue, 14 Apr
Multiple Airlines Logo
09:40 - 17:10
LTN
-
SEA
15h 30m
1 stop
Multiple Airlines Logo
18:55 - 21:40
SEA
-
LTN
18h 45m
1 stop
£519Multiple Airlines
Tue, 12 May - Sun, 24 May
Multiple Airlines Logo
08:15 - 14:19
LTN
-
SEA
38h 04m
3 stops
Multiple Airlines Logo
19:00 - 21:00
SEA
-
LTN
18h 00m
2 stops
£533Multiple Airlines
Mon, 20 Apr - Sat, 2 May
Multiple Airlines Logo
21:40 - 18:00
LTN
-
PDX
27h 20m
2 stops
Multiple Airlines Logo
15:45 - 21:05
PDX
-
LTN
22h 20m
2 stops
£557Multiple Airlines
Sun, 8 Mar - Mon, 16 Mar

momondo Fare Finder

 
Customise your flight search to find flights from London Luton Airport to State of 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, momondo users made 279,928 searches. Data last updated 5 February 2026.
Use the filters below to find and compare flights from London Luton Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 4/3

06:50-17:00

2 stops18h 10m

Seattle/Tacoma Intl

Wed 11/3

15:35-17:05

2 stops18h 30m

£450

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 4/3

06:50-17:00

2 stops18h 10m

Seattle/Tacoma Intl

Wed 11/3

15:35-17:05

2 stops18h 30m

£452

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 11/5

08:15-17:10

1 stop16h 55m

Seattle/Tacoma Intl

Mon 18/5

18:55-22:50

1 stop19h 55m

£491

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 18/3

06:50-19:20

1 stop19h 30m

Seattle/Tacoma Intl

Wed 25/3

21:05-17:05

1 stop13h 00m

£495

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 12/5

09:40-20:40

2 stops19h 00m

Seattle/Tacoma Intl

Sun 24/5

15:40-21:40

2 stops22h 00m

£497

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 13/4

18:40-19:25

2 stops32h 45m

Seattle/Tacoma Intl

Wed 6/5

18:55-15:25

1 stop12h 30m

£516

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 1/4

06:15-17:10

1 stop18h 55m

Seattle/Tacoma Intl

Tue 14/4

18:55-15:30

1 stop12h 35m

£518

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 12/5

09:40-17:10

1 stop15h 30m

Seattle/Tacoma Intl

Sun 24/5

18:55-21:40

1 stop18h 45m

£519

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 20/4

08:15-14:19

3 stops38h 04m

Seattle/Tacoma Intl

Sat 2/5

19:00-21:00

2 stops18h 00m

£532

LondonPortland

LTN - PDX

LTNPDX

London Luton

Sun 8/3

21:40-18:00

2 stops27h 20m

Portland

Mon 16/3

15:45-21:05

2 stops22h 20m

£557

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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

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

Fastest flight time

12h 20m

Direct flights

None
The fastest flight from London Luton Airport to State of Washington takes 12h 20m
There are no direct flights from London Luton Airport to State of Washington. There are no popular flight routes from London Luton Airport to State of Washington.
  • When did momondo last update prices for flights from London Luton Airport to Washington?

    Prices for flights from London Luton Airport to Washington refresh daily.

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

    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 London Luton Airport to Washington.

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

    The required travel and health documents for your Washington 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 Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from London Luton Airport to State of Washington?

    Confirm your travel details to search for the latest offers for flights from London Luton Airport to State of Washington. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from London Luton Airport to State of Washington with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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?

Yes. momondo enables you to select and highlight flights to Washington from London with this policy.

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?

Yes momondo offers price alerts on flights to Washington from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your State of Washington trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 7/3
Sat 14/3

Find better results for your trip to Washington

Popular Cities in Washington

Popular flights according to clicks in the last 7 days on momondo