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Cheap flights from London Luton Airport to Washington from £306

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
31 May — 7 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Luton to Washington

Enter your travel dates to find the best prices.

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 1 May 2026.

Wed 27/506:15
LTN
-
SEA
1 stop18h 55m
Multiple Airlines
Wed 3/619:10
SEA
-
LTN
1 stop12h 15m
Multiple Airlines
Deal found 29/4£526
Thu 11/609:25
LTN
-
SEA
1 stop15h 45m
Multiple Airlines
Sun 14/619:10
SEA
-
LTN
1 stop18h 30m
Multiple Airlines
Deal found 26/4£538
Fri 12/606:20
LTN
-
SEA
1 stop18h 50m
Multiple Airlines
Mon 22/619:10
SEA
-
LTN
1 stop19h 40m
Multiple Airlines
Deal found 28/4£540
Sat 9/521:25
LTN
-
SEA
3 stops44h 15m
Multiple Airlines
Mon 18/515:40
SEA
-
LTN
3 stops25h 30m
Multiple Airlines
Deal found 27/4£591
Thu 10/921:40
LTN
-
SEA
3 stops44h 00m
Multiple Airlines
Tue 20/1015:40
SEA
-
LTN
3 stops20h 50m
Multiple Airlines
Deal found 30/4£616
Mon 1/608:15
LTN
-
SEA
1 stop16h 55m
Multiple Airlines
Tue 16/619:10
SEA
-
LTN
1 stop19h 00m
Multiple Airlines
Deal found 26/4£629
Mon 1/608:15
LTN
-
SEA
1 stop16h 55m
Multiple Airlines
Tue 30/619:10
SEA
-
LTN
1 stop19h 00m
Multiple Airlines
Deal found 28/4£634
Thu 11/607:00
LTN
-
SEA
2 stops17h 00m
Multiple Airlines
Tue 30/618:05
SEA
-
LTN
2 stops17h 50m
Multiple Airlines
Deal found 29/4£636
Thu 28/509:25
LTN
-
SEA
1 stop15h 45m
Multiple Airlines
Fri 5/619:10
SEA
-
LTN
1 stop14h 15m
Multiple Airlines
Deal found 30/4£637
Thu 28/509:25
LTN
-
SEA
1 stop15h 45m
Multiple Airlines
Tue 9/619:10
SEA
-
LTN
1 stop12h 20m
Multiple Airlines
Deal found 30/4£638
Thu 11/609:25
LTN
-
SEA
3 stops41h 20m
Multiple Airlines
Thu 18/610:30
SEA
-
LTN
3 stops28h 55m
Multiple Airlines
Deal found 27/4£640
Fri 29/506:20
LTN
-
SEA
1 stop18h 50m
Multiple Airlines
Fri 5/619:10
SEA
-
LTN
1 stop14h 15m
Multiple Airlines
Deal found 29/4£641

Find flight deals from Luton to Washington

Keep the following information in mind while searching for Luton to Washington flight deals. Data was last updated 1 May 2026.

Round-trip from

£526

One-way from

£306

Popular in

July

Cheapest in

February

Average price

£538
27/5-3/6
  • 27/5-3/6
  • 2 total stops
  • 31h 10m total
  • London to Washington
Search Deals
15/5
  • 15/5
  • 3 total stops
  • 52h 40m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£51 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 1 May 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

Cheapest return flight

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 15/6

08:50-18:45

2 stops17h 55m

Seattle/Tacoma Intl

Thu 16/7

15:40-22:45

2 stops23h 05m

£647

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 11/6

19:30-16:00

2 stops28h 30m

Seattle/Tacoma Intl

Mon 29/6

18:10-22:15

2 stops20h 05m

£647

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 24/5

09:00-17:10

1 stop16h 10m

Seattle/Tacoma Intl

Wed 3/6

19:10-15:25

1 stop12h 15m

£659

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 13/10

09:40-18:45

2 stops17h 05m

Seattle/Tacoma Intl

Tue 20/10

19:10-15:30

1 stop12h 20m

£691
Fastest return journey

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 24/5

11:00-17:10

1 stop14h 10m

Seattle/Tacoma Intl

Sun 31/5

19:10-15:25

1 stop12h 15m

£715

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 7/10

06:15-20:40

1 stop22h 25m

Seattle/Tacoma Intl

Thu 15/10

19:00-22:10

2 stops19h 10m

£720

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 1/6

18:05-21:08

3 stops35h 03m

Seattle/Tacoma Intl

Sun 14/6

15:40-19:30

2 stops19h 50m

£738

LondonPortland

LTN - PDX

LTNPDX

London Luton

Wed 13/5

21:50-13:35

2 stops23h 45m

Portland

Wed 20/5

13:05-21:30

3 stops24h 25m

£746

LondonPortland

LTN - PDX

LTNPDX

London Luton

Mon 11/5

09:55-09:30

3 stops31h 35m

Portland

Thu 21/5

14:30-23:25

2 stops24h 55m

£763

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 9/9

06:15-11:45

1 stop13h 30m

Seattle/Tacoma Intl

Tue 22/9

19:00-18:30

2 stops15h 30m

£790

Flights are sorted by cheapest return flights first.

Deals found on 26/4

Showing 1-10 of 37 resultsSorted by cheapest first
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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.

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Alternative routes for Luton to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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