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Cheap flights from London Luton Airport to Washington from £315

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
1 May — 8 May1
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 April 2026.

Mon 11/508:15
LTN
-
SEA
1 stop16h 55m
Multiple Airlines
Mon 18/519:10
SEA
-
LTN
1 stop12h 35m
Multiple Airlines
Deal found 27/3£517
Fri 1/506:20
LTN
-
SEA
3 stops35h 20m
Multiple Airlines
Mon 4/515:40
SEA
-
LTN
3 stops25h 30m
Multiple Airlines
Deal found 29/3£518
Thu 14/509:25
LTN
-
SEA
1 stop15h 45m
Multiple Airlines
Thu 21/519:10
SEA
-
LTN
1 stop20h 15m
Multiple Airlines
Deal found 30/3£520
Tue 12/509:40
LTN
-
SEA
1 stop15h 30m
Multiple Airlines
Tue 19/519:10
SEA
-
LTN
1 stop12h 20m
Multiple Airlines
Deal found 28/3£521
Mon 13/408:15
LTN
-
SEA
1 stop16h 55m
Multiple Airlines
Sun 26/419:10
SEA
-
LTN
1 stop12h 15m
Multiple Airlines
Deal found 31/3£524
Fri 15/506:20
LTN
-
SEA
1 stop18h 50m
Multiple Airlines
Fri 22/519:10
SEA
-
LTN
1 stop21h 20m
Multiple Airlines
Deal found 31/3£528
Tue 14/409:15
LTN
-
SEA
3 stops42h 05m
Multiple Airlines
Tue 21/415:40
SEA
-
LTN
3 stops24h 05m
Multiple Airlines
Deal found 31/3£533
Mon 13/407:15
LTN
-
SEA
2 stops16h 55m
Multiple Airlines
Mon 27/418:10
SEA
-
LTN
2 stops16h 15m
Multiple Airlines
Deal found 28/3£541
Fri 1/506:20
LTN
-
SEA
1 stop18h 50m
Multiple Airlines
Tue 5/519:10
SEA
-
LTN
1 stop19h 00m
Multiple Airlines
Deal found 28/3£552
Mon 4/508:15
LTN
-
PDX
3 stops33h 15m
Multiple Airlines
Mon 18/513:05
PDX
-
LTN
3 stops28h 05m
Multiple Airlines
Deal found 29/3£583
Fri 15/521:50
LTN
-
PDX
2 stops23h 15m
Multiple Airlines
Sat 23/515:10
PDX
-
LTN
2 stops21h 55m
Multiple Airlines
Deal found 30/3£669
Wed 6/506:15
LTN
-
PDX
3 stops35h 15m
Multiple Airlines
Wed 27/510:10
PDX
-
LTN
3 stops28h 05m
Multiple Airlines
Deal found 27/3£686

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 April 2026.

Round-trip from

£517

One-way from

£315

Popular in

July

Cheapest in

February

Average price

£531
11/5-18/5
  • 11/5-18/5
  • 2 total stops
  • 29h 30m total
  • London to Washington
Search Deals
10/5
  • 10/5
  • 2 total stops
  • 35h 20m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£58 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 April 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 April 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

Fri 1/5

06:20-09:40

3 stops35h 20m

Seattle/Tacoma Intl

Mon 4/5

15:40-01:10

3 stops25h 30m

£518
Fastest return journey

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 13/4

08:15-17:10

1 stop16h 55m

Seattle/Tacoma Intl

Sun 26/4

19:10-15:25

1 stop12h 15m

£524

LondonPortland

LTN - PDX

LTNPDX

London Luton

Mon 4/5

08:15-09:30

3 stops33h 15m

Portland

Mon 18/5

13:05-01:10

3 stops28h 05m

£608

LondonPortland

LTN - PDX

LTNPDX

London Luton

Fri 15/5

21:50-13:05

2 stops23h 15m

Portland

Sat 23/5

15:10-21:05

2 stops21h 55m

£669

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 16/5

05:40-20:40

2 stops23h 00m

Seattle/Tacoma Intl

Sat 23/5

15:40-23:40

2 stops24h 00m

£673

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 1/5

06:20-17:10

1 stop18h 50m

Seattle/Tacoma Intl

Fri 15/5

19:10-17:25

1 stop14h 15m

£681

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 16/9

06:15-17:55

1 stop19h 40m

Seattle/Tacoma Intl

Tue 29/9

19:00-22:50

2 stops19h 50m

£719

LondonPortland

LTN - PDX

LTNPDX

London Luton

Mon 20/4

06:05-18:30

3 stops44h 25m

Portland

Mon 4/5

15:30-22:05

2 stops22h 35m

£730

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 22/5

06:20-09:40

3 stops35h 20m

Seattle/Tacoma Intl

Wed 24/6

08:00-22:25

3 stops30h 25m

£753

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 17/4

06:20-17:10

1 stop18h 50m

Seattle/Tacoma Intl

Mon 20/4

19:10-15:45

1 stop12h 35m

£774

Flights are sorted by cheapest return flights first.

Deals found on 29/3

Showing 1-10 of 35 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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