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Cheap flights from London Luton Airport to St. Louis from £559

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 22/12. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — STL
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Luton to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Luton (LTN) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 September 2025.

Round-trip from

£937

One-way from

£559

Popular in

December

Cheapest in

March

Average price

£688
31/10-7/11
  • 31/10-7/11
  • 5 total stops
  • 49h 54m total
  • London to St. Louis
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22/12
  • 22/12
  • 2 total stops
  • 19h 47m total
  • London to St. Louis
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£31 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Luton to St. Louis

Cheapest flights from Luton to St. Louis
Explore the most affordable flight options available from Luton to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Fri 31/1010:30LTN - STL
3 stops33h 59mMultiple Airlines
Fri 7/1116:05STL - LTN
2 stops15h 55mMultiple Airlines
Deal found 16/9£937
Thu 9/1008:00LTN - STL
2 stops35h 30mMultiple Airlines
Wed 15/1016:05STL - LTN
2 stops17h 20mMultiple Airlines
Deal found 14/9£989
Wed 24/914:10LTN - STL
3 stops35h 47mMultiple Airlines
Wed 1/1016:05STL - LTN
2 stops17h 20mMultiple Airlines
Deal found 15/9£1,052
Thu 2/1006:40LTN - STL
3 stops18h 58mMultiple Airlines
Fri 17/1009:15STL - LTN
3 stops22h 35mMultiple Airlines
Deal found 16/9£1,351
Fri 17/1006:05LTN - STL
3 stops32h 04mMultiple Airlines
Thu 30/1016:05STL - LTN
2 stops17h 45mMultiple Airlines
Deal found 15/9£1,369
Thu 9/1015:35LTN - STL
2 stops27h 55mMultiple Airlines
Sat 18/1016:05STL - LTN
2 stops26h 00mMultiple Airlines
Deal found 16/9£1,398
Tue 7/1007:00LTN - STL
2 stops18h 38mMultiple Airlines
Wed 22/1016:05STL - LTN
2 stops20h 40mMultiple Airlines
Deal found 15/9£1,461

Cheapflights Fare Finder

 
Customise your flight search to find flights from Luton to St. Louis 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 16 September 2025.
Use the filters below to find and compare flights from London Luton Airport to St. Louis that are best for you.

Fly from

Luton

Fly to

St. Louis

Route

Depart

Return

Price

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 31/10

10:30-15:29

3 stops33h 59m

Lambert-St Louis

Fri 7/11

16:05-14:00

2 stops15h 55m

£937

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 9/10

08:00-13:30

2 stops35h 30m

Lambert-St Louis

Wed 15/10

16:05-15:25

2 stops17h 20m

£989

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 2/10

06:40-19:38

3 stops18h 58m

Lambert-St Louis

Fri 17/10

15:30-00:10

2 stops26h 40m

£1,358

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 17/10

06:05-08:09

3 stops32h 04m

Lambert-St Louis

Thu 30/10

16:05-14:50

2 stops17h 45m

£1,369

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 9/10

15:35-13:30

2 stops27h 55m

Lambert-St Louis

Sat 18/10

16:05-00:05

2 stops26h 00m

£1,398

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 7/10

07:00-19:38

2 stops18h 38m

Lambert-St Louis

Wed 22/10

16:05-18:45

2 stops20h 40m

£1,461

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sat 15/11

11:00-13:55

2 stops32h 55m

Lambert-St Louis

Fri 21/11

16:05-21:00

2 stops22h 55m

£2,083

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Mon 22/12

07:20-21:07

2 stops19h 47m

£559

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 2/10

21:20-13:30

2 stops22h 10m

£634

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Mon 6/10

21:20-19:57

3 stops28h 37m

£645

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 11 results
1
2

Best time to book a flight from Luton to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis 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.

Related info for your journey

Find useful and relevant information for your journey from Luton to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from London Luton?

    For a flight from London Luton to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 inbound flights from London Luton per day. 0 airlines have flights to Lambert-St Louis from London Luton on a regular basis.

  • Can I find deals for flights from Luton to St. Louis that include hotel bookings?

    Yes. In addition to deals on Luton to St. Louis flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Luton to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luton to St. Louis.

  • Can I find deals for business class flights from Luton to St. Louis?

    Yes. Cheapflights offers flight deals from Luton to St. Louis 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 St. Louis?

    Currently, February is the cheapest month in which you can book a flight from London Luton Airport to St. Louis (average of £722). Flying from London Luton Airport to St. Louis in December is currently the most expensive (average of £1,033). 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.

See more FAQs

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Why should you use Cheapflights to find cheap flight tickets from Luton to St. Louis?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Luton to St. Louis.

Can Cheapflights find flights from Luton to St. Louis with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Luton to St. Louis flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Luton to St. Louis become cheaper?

Yes! Start tracking prices for Luton to St. Louis flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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