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Cheap flights from London Luton Airport to Washington from £374

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 28/2. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
16 Oct — 23 Oct1
1 adult
1 adult, Economy

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 16 September 2025.

Round-trip from

£472

One-way from

£374

Popular in

July

Cheapest in

January

Average price

£498
3/11-16/11
  • 3/11-16/11
  • 4 total stops
  • 42h 25m total
  • London to Washington
Search Deals
28/2
  • 28/2
  • 3 total stops
  • 30h 10m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£61 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 16 September 2025.

Mon 3/1106:00LTN - SEA
2 stops19h 00mMultiple Airlines
Sun 16/1114:35SEA - LTN
2 stops23h 25mMultiple Airlines
Deal found 15/9£472
Wed 15/1010:00LTN - SEA
1 stop15h 50mMultiple Airlines
Mon 20/1019:35SEA - LTN
1 stop17h 50mMultiple Airlines
Deal found 15/9£491
Mon 8/1206:00LTN - SEA
2 stops19h 00mMultiple Airlines
Sun 14/1214:35SEA - LTN
2 stops23h 25mMultiple Airlines
Deal found 15/9£500
Mon 13/1009:00LTN - SEA
2 stops16h 50mMultiple Airlines
Mon 20/1015:45SEA - LTN
2 stops16h 15mMultiple Airlines
Deal found 15/9£564
Fri 3/1008:15LTN - SEA
2 stops20h 25mMultiple Airlines
Mon 6/1015:45SEA - LTN
2 stops21h 15mMultiple Airlines
Deal found 14/9£642
Wed 24/906:05LTN - SEA
2 stops22h 35mMultiple Airlines
Mon 29/919:00SEA - LTN
2 stops15h 30mMultiple Airlines
Deal found 15/9£642
Thu 25/906:05LTN - SEA
2 stops22h 35mMultiple Airlines
Tue 30/915:45SEA - LTN
2 stops22h 30mMultiple Airlines
Deal found 14/9£645
Fri 7/1108:50LTN - SEA
2 stops16h 10mMultiple Airlines
Wed 12/1114:35SEA - LTN
2 stops23h 20mMultiple Airlines
Deal found 13/9£668
Mon 6/1009:00LTN - PDX
3 stops32h 20mMultiple Airlines
Mon 20/1006:15PDX - LTN
3 stops31h 10mMultiple Airlines
Deal found 15/9£687
Wed 29/1008:50LTN - SEA
2 stops16h 10mMultiple Airlines
Wed 5/1114:35SEA - LTN
2 stops21h 25mMultiple Airlines
Deal found 14/9£705
Thu 6/1106:15LTN - SEA
2 stops18h 45mMultiple Airlines
Thu 13/1114:35SEA - LTN
2 stops17h 15mMultiple Airlines
Deal found 14/9£706
Mon 6/1009:00LTN - PDX
3 stops32h 20mMultiple Airlines
Thu 9/1013:45PDX - LTN
2 stops18h 50mMultiple Airlines
Deal found 13/9£720

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 16 September 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

Mon 8/12

06:00-17:00

2 stops19h 00m

Seattle/Tacoma Intl

Sun 14/12

14:35-22:00

2 stops23h 25m

£500

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 13/10

09:00-17:50

2 stops16h 50m

Seattle/Tacoma Intl

Mon 20/10

15:45-16:00

2 stops16h 15m

£564

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 3/10

08:15-20:40

2 stops20h 25m

Seattle/Tacoma Intl

Mon 6/10

15:45-21:00

2 stops21h 15m

£642

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 15/10

06:15-20:40

1 stop22h 25m

Seattle/Tacoma Intl

Mon 20/10

14:05-16:00

2 stops17h 55m

£657

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 7/11

08:50-17:00

2 stops16h 10m

Seattle/Tacoma Intl

Wed 12/11

14:35-21:55

2 stops23h 20m

£668

LondonPortland

LTN - PDX

LTNPDX

London Luton

Mon 6/10

09:00-09:20

3 stops32h 20m

Portland

Mon 20/10

06:15-21:25

3 stops31h 10m

£687

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 3/11

08:00-17:00

1 stop17h 00m

Seattle/Tacoma Intl

Sun 16/11

15:10-16:35

2 stops17h 25m

£695

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 29/10

08:50-18:00

2 stops16h 10m

Seattle/Tacoma Intl

Wed 5/11

14:35-20:00

2 stops21h 25m

£705

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 6/11

06:15-17:00

2 stops18h 45m

Seattle/Tacoma Intl

Thu 13/11

14:35-15:50

2 stops17h 15m

£706

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 14/10

10:00-12:59

2 stops34h 59m

Seattle/Tacoma Intl

Mon 20/10

08:40-21:25

2 stops28h 45m

£712

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 39 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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