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Cheap flights from London Luton Airport to Washington from £377

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 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
3 Sep — 10 Sep1
1 adult

Cheap flight deals from Luton to Washington

Keep the following information in mind while searching for Luton to Washington flight deals. Data was last updated 29 August 2025.

Round-trip from

£508

One-way from

£377

Popular in

August

Cheapest in

January

Average price

£696
12/10-19/10
  • 12/10-19/10
  • 2 total stops
  • 28h 00m total
  • London to Washington
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30/9
  • 30/9
  • 2 total stops
  • 30h 04m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from Luton to Washington

Cheapest flights from Luton to Washington
Explore the most affordable flight options available from Luton to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Sun 12/1009:55LTN - SEA
1 stop15h 55mMultiple Airlines
Sun 19/1019:35SEA - LTN
1 stop12h 05mMultiple Airlines
Deal found 28/8£508
Wed 24/910:00LTN - PDX
3 stops21h 01mMultiple Airlines
Wed 1/1006:15PDX - LTN
3 stops32h 40mMultiple Airlines
Deal found 27/8£560
Sat 13/907:00LTN - SEA
2 stops20h 21mMultiple Airlines
Tue 7/1007:05SEA - LTN
2 stops31h 05mMultiple Airlines
Deal found 28/8£592
Mon 22/908:50LTN - PDX
3 stops22h 11mMultiple Airlines
Mon 6/1013:45PDX - LTN
2 stops18h 15mMultiple Airlines
Deal found 27/8£616
Tue 25/1107:00LTN - SEA
3 stops34h 31mMultiple Airlines
Thu 11/1215:10SEA - LTN
2 stops15h 35mMultiple Airlines
Deal found 28/8£631
Sat 11/1006:05LTN - PDX
3 stops24h 56mMultiple Airlines
Sat 18/1009:55PDX - LTN
3 stops19h 50mMultiple Airlines
Deal found 27/8£633
Wed 1/1007:00LTN - SEA
2 stops20h 14mMultiple Airlines
Wed 8/1008:40SEA - LTN
2 stops26h 45mMultiple Airlines
Deal found 28/8£639
Sun 14/909:55LTN - SEA
3 stops44h 21mMultiple Airlines
Wed 24/912:00SEA - LTN
2 stops26h 55mMultiple Airlines
Deal found 27/8£641
Wed 10/907:00LTN - SEA
2 stops20h 21mMultiple Airlines
Sun 14/919:00SEA - LTN
2 stops19h 05mMultiple Airlines
Deal found 27/8£651
Mon 8/919:50LTN - SEA
2 stops27h 15mMultiple Airlines
Mon 22/917:05SEA - LTN
2 stops17h 25mMultiple Airlines
Deal found 27/8£684
Tue 2/910:00LTN - SEA
3 stops19h 00mMultiple Airlines
Tue 16/914:05SEA - LTN
2 stops24h 05mMultiple Airlines
Deal found 28/8£688
Mon 8/911:00LTN - PDX
2 stops34h 35mMultiple Airlines
Sun 14/918:35PDX - LTN
2 stops15h 40mMultiple Airlines
Deal found 27/8£763

Cheapflights Fare Finder

 
Customise your flight search to find flights from Luton 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 29 August 2025.
Use the filters below to find and compare flights from London Luton Airport to Washington that are best for you.

Fly from

Luton

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 12/10

09:55-17:50

1 stop15h 55m

Seattle/Tacoma Intl

Sun 19/10

19:35-15:40

1 stop12h 05m

£508

LondonPortland

LTN - PDX

LTNPDX

London Luton

Wed 24/9

10:00-23:01

3 stops21h 01m

Portland

Wed 1/10

06:15-22:55

3 stops32h 40m

£560

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 13/9

07:00-19:21

2 stops20h 21m

Seattle/Tacoma Intl

Tue 7/10

07:05-22:10

2 stops31h 05m

£592

LondonPortland

LTN - PDX

LTNPDX

London Luton

Mon 22/9

08:50-23:01

3 stops22h 11m

Portland

Mon 6/10

13:45-16:00

2 stops18h 15m

£616

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 25/11

07:00-09:31

3 stops34h 31m

Seattle/Tacoma Intl

Thu 11/12

15:10-14:45

2 stops15h 35m

£631

LondonPortland

LTN - PDX

LTNPDX

London Luton

Sat 11/10

06:05-23:01

3 stops24h 56m

Portland

Sat 18/10

09:55-13:45

3 stops19h 50m

£633

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 1/10

07:00-19:14

2 stops20h 14m

Seattle/Tacoma Intl

Wed 8/10

08:40-19:25

2 stops26h 45m

£639

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 14/9

09:55-22:16

3 stops44h 21m

Seattle/Tacoma Intl

Wed 24/9

12:00-22:55

2 stops26h 55m

£641

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 10/9

07:00-19:21

2 stops20h 21m

Seattle/Tacoma Intl

Sun 14/9

19:00-22:05

2 stops19h 05m

£651

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 8/9

19:50-15:05

2 stops27h 15m

Seattle/Tacoma Intl

Mon 22/9

17:05-18:30

2 stops17h 25m

£684

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 35 results
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Best time to book a flight from Luton to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Luton 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 Luton 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 Luton 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 Luton to Washington that include hotel bookings?

    Yes. In addition to deals on Luton to Washington flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Luton to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luton to Washington.

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

    Yes. Cheapflights offers flight deals from Luton 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.

  • What is the cheapest month to book a flight from London Luton Airport to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from London Luton Airport to State of Washington (average of £622). Flying from London Luton Airport to State of Washington in July is currently the most expensive (average of £946). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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