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Cheap flights from London Luton Airport to Washington from £298

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
14 Jul — 21 Jul1
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 14 June 2026.

Sat 12/911:00
LTN
-
SEA
2 stops34h 45m
Multiple Airlines
Sat 19/915:55
SEA
-
LTN
2 stops22h 00m
Multiple Airlines
Deal found 14/6£586
Sat 5/908:00
LTN
-
SEA
2 stops17h 55m
Multiple Airlines
Sat 12/915:40
SEA
-
LTN
2 stops17h 20m
Multiple Airlines
Deal found 9/6£620
Mon 7/918:05
LTN
-
SEA
3 stops47h 35m
Multiple Airlines
Sat 19/919:00
SEA
-
LTN
2 stops18h 00m
Multiple Airlines
Deal found 11/6£622
Mon 7/918:05
LTN
-
SEA
3 stops47h 35m
Multiple Airlines
Wed 16/919:00
SEA
-
LTN
2 stops19h 15m
Multiple Airlines
Deal found 11/6£623
Wed 8/706:15
LTN
-
SEA
2 stops22h 25m
Multiple Airlines
Tue 21/715:40
SEA
-
LTN
2 stops15h 50m
Multiple Airlines
Deal found 11/6£632
Mon 13/708:15
LTN
-
SEA
2 stops35h 30m
Multiple Airlines
Mon 20/715:40
SEA
-
LTN
2 stops23h 10m
Multiple Airlines
Deal found 9/6£634
Thu 9/707:00
LTN
-
SEA
2 stops17h 00m
Multiple Airlines
Thu 23/718:05
SEA
-
LTN
2 stops17h 50m
Multiple Airlines
Deal found 11/6£643
Sun 1/1113:10
LTN
-
SEA
1 stop13h 10m
Multiple Airlines
Sun 15/1120:05
SEA
-
LTN
1 stop14h 55m
Multiple Airlines
Deal found 11/6£644
Mon 6/718:05
LTN
-
SEA
3 stops47h 35m
Multiple Airlines
Thu 30/715:40
SEA
-
LTN
2 stops18h 45m
Multiple Airlines
Deal found 11/6£646
Wed 19/806:15
LTN
-
SEA
3 stops35h 25m
Multiple Airlines
Thu 27/819:00
SEA
-
LTN
2 stops19h 10m
Multiple Airlines
Deal found 13/6£649
Fri 26/617:50
LTN
-
PDX
2 stops27h 15m
Multiple Airlines
Sat 11/715:10
PDX
-
LTN
2 stops24h 15m
Multiple Airlines
Deal found 10/6£855
Fri 26/608:50
LTN
-
PDX
2 stops34h 55m
Multiple Airlines
Thu 9/715:30
PDX
-
LTN
2 stops22h 40m
Multiple Airlines
Deal found 11/6£859

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 14 June 2026.

Round-trip from

£586

One-way from

£298

Popular in

July

Cheapest in

February

Average price

£620
12/9-19/9
  • 12/9-19/9
  • 4 total stops
  • 56h 45m total
  • London to Washington
Search Deals
18/8
  • 18/8
  • 3 total stops
  • 50h 00m 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 (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 14 June 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

Sat 12/9

11:00-13:45

2 stops34h 45m

Seattle/Tacoma Intl

Sat 19/9

15:55-21:55

2 stops22h 00m

£586

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 7/9

18:05-09:40

3 stops47h 35m

Seattle/Tacoma Intl

Wed 16/9

19:00-22:15

2 stops19h 15m

£623

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 19/8

06:15-09:40

3 stops35h 25m

Seattle/Tacoma Intl

Mon 31/8

19:00-17:10

2 stops14h 10m

£655

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 5/8

20:50-16:00

2 stops27h 10m

Seattle/Tacoma Intl

Wed 19/8

17:40-20:10

2 stops18h 30m

£708

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 26/6

05:40-18:45

3 stops45h 05m

Seattle/Tacoma Intl

Thu 9/7

15:40-23:10

2 stops23h 30m

£711

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 1/9

08:50-17:55

2 stops17h 05m

Seattle/Tacoma Intl

Wed 16/9

19:00-22:15

2 stops19h 15m

£748

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 17/7

05:40-09:40

3 stops36h 00m

Seattle/Tacoma Intl

Wed 22/7

15:40-18:05

2 stops18h 25m

£809

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 26/6

06:20-21:00

2 stops22h 40m

Seattle/Tacoma Intl

Tue 30/6

13:30-22:25

3 stops24h 55m

£831

LondonPortland

LTN - PDX

LTNPDX

London Luton

Fri 26/6

08:50-11:45

2 stops34h 55m

Portland

Thu 9/7

15:30-22:10

2 stops22h 40m

£859

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 30/6

09:40-18:45

2 stops17h 05m

Seattle/Tacoma Intl

Sun 12/7

15:40-18:25

2 stops18h 45m

£864

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 41 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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