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Cheap flights from London Luton Airport to Washington from £401

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
20 Jul — 27 Jul1
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 15 July 2025.

Round-trip from

£570

One-way from

£401

Popular in

August

Cheapest in

January

Average price

£706
3/10-8/10
  • 3/10-8/10
  • 4 total stops
  • 58h 09m total
  • London to Washington
18/9
  • 18/9
  • 3 total stops
  • 22h 32m total
  • London to Washington
Highest demand for flights based on searches. 14% potential increase in price (£67 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Average for round-trip flights in July 2025

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 15 July 2025.

Fri 3/1017:50LTN - SEA
2 stops33h 24mMultiple Airlines
Wed 8/1013:50SEA - LTN
2 stops24h 45mMultiple Airlines
Deal found 13/7£570
Wed 27/806:05LTN - PDX
3 stops44h 52mMultiple Airlines
Wed 3/915:25PDX - LTN
3 stops21h 20mMultiple Airlines
Deal found 13/7£625

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 15 July 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

Fri 3/10

17:50-19:14

2 stops33h 24m

Seattle/Tacoma Intl

Wed 8/10

13:50-22:35

2 stops24h 45m

£570

LondonPortland

LTN - PDX

LTNPDX

London Luton

Wed 27/8

06:05-18:57

3 stops44h 52m

Portland

Wed 3/9

15:25-20:45

3 stops21h 20m

£625

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 18/9

06:05-20:37

3 stops22h 32m

£401

LondonPortland

LTN - PDX

LTNPDX

London Luton

Wed 3/12

07:30-17:00

1 stop17h 30m

£429

Flights are sorted by cheapest return flights first.

Deals found on 13/7

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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