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Cheap flights from London Luton Airport to Washington from £297

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 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
19 May — 26 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 19 April 2026.

Wed 22/406:15
LTN
-
SEA
1 stop18h 55m
Multiple Airlines
Sun 26/419:10
SEA
-
LTN
1 stop18h 30m
Multiple Airlines
Deal found 14/4£516
Fri 1/506:20
LTN
-
SEA
3 stops35h 20m
Multiple Airlines
Tue 5/515:40
SEA
-
LTN
3 stops22h 30m
Multiple Airlines
Deal found 15/4£525
Thu 14/509:25
LTN
-
SEA
1 stop15h 45m
Multiple Airlines
Thu 21/519:10
SEA
-
LTN
1 stop20h 15m
Multiple Airlines
Deal found 14/4£527
Fri 29/506:20
LTN
-
SEA
1 stop18h 50m
Multiple Airlines
Fri 5/619:10
SEA
-
LTN
1 stop14h 15m
Multiple Airlines
Deal found 14/4£530
Mon 1/608:15
LTN
-
SEA
1 stop16h 55m
Multiple Airlines
Mon 8/619:10
SEA
-
LTN
1 stop12h 35m
Multiple Airlines
Deal found 17/4£531
Sun 3/509:00
LTN
-
SEA
3 stops41h 45m
Multiple Airlines
Wed 6/515:40
SEA
-
LTN
3 stops21h 50m
Multiple Airlines
Deal found 18/4£553
Tue 19/509:40
LTN
-
SEA
2 stops17h 05m
Multiple Airlines
Tue 2/615:40
SEA
-
LTN
3 stops24h 05m
Multiple Airlines
Deal found 19/4£555
Fri 15/506:20
LTN
-
SEA
1 stop18h 50m
Multiple Airlines
Sat 23/519:10
SEA
-
LTN
1 stop18h 45m
Multiple Airlines
Deal found 16/4£558
Sat 16/511:00
LTN
-
SEA
1 stop14h 10m
Multiple Airlines
Sat 23/519:10
SEA
-
LTN
1 stop12h 55m
Multiple Airlines
Deal found 17/4£563
Tue 19/509:40
LTN
-
SEA
2 stops17h 05m
Multiple Airlines
Mon 25/515:40
SEA
-
LTN
3 stops25h 30m
Multiple Airlines
Deal found 17/4£564
Fri 5/606:20
LTN
-
PDX
3 stops35h 10m
Multiple Airlines
Wed 10/614:30
PDX
-
LTN
2 stops23h 50m
Multiple Airlines
Deal found 14/4£729
Wed 20/506:15
LTN
-
PDX
3 stops35h 15m
Multiple Airlines
Wed 10/614:30
PDX
-
LTN
2 stops23h 50m
Multiple Airlines
Deal found 15/4£746

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 19 April 2026.

Round-trip from

£525

One-way from

£297

Popular in

July

Cheapest in

February

Average price

£539
1/5-5/5
  • 1/5-5/5
  • 6 total stops
  • 57h 50m total
  • London to Washington
Search Deals
19/5
  • 19/5
  • 2 total stops
  • 53h 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 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 19 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

Sun 3/5

09:00-18:45

3 stops41h 45m

Seattle/Tacoma Intl

Wed 6/5

15:40-21:30

3 stops21h 50m

£553

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 23/6

09:40-21:00

2 stops19h 20m

Seattle/Tacoma Intl

Mon 29/6

15:40-01:10

3 stops25h 30m

£566

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 12/5

09:40-09:40

2 stops32h 00m

Seattle/Tacoma Intl

Tue 19/5

15:40-23:45

3 stops24h 05m

£594

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 18/5

06:05-18:45

2 stops20h 40m

Seattle/Tacoma Intl

Mon 25/5

19:00-01:10

3 stops22h 10m

£627

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 1/5

06:20-21:08

2 stops22h 48m

Seattle/Tacoma Intl

Mon 4/5

15:40-01:10

3 stops25h 30m

£633

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 24/6

09:40-09:40

2 stops32h 00m

Seattle/Tacoma Intl

Wed 22/7

19:10-15:25

1 stop12h 15m

£649

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 24/8

14:25-18:45

2 stops36h 20m

Seattle/Tacoma Intl

Mon 7/9

19:10-15:45

1 stop12h 35m

£686

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 3/6

06:15-11:45

1 stop13h 30m

Seattle/Tacoma Intl

Mon 8/6

05:45-22:15

3 stops32h 30m

£711

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 18/5

14:25-18:45

2 stops36h 20m

Seattle/Tacoma Intl

Mon 1/6

19:10-15:45

1 stop12h 35m

£712
Fastest return journey

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 31/5

09:00-17:10

1 stop16h 10m

Seattle/Tacoma Intl

Sun 7/6

19:10-15:25

1 stop12h 15m

£714

Flights are sorted by cheapest return flights first.

Deals found on 18/4

Showing 1-10 of 40 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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