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Cheap flights from London Luton Airport to St. Louis from £445

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 24/3. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — STL
23 Nov — 30 Nov1
1 adult
1 adult, Economy, 0 bags

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 24 October 2025.

Round-trip from

£978

One-way from

£445

Popular in

December

Cheapest in

March

Average price

£754
6/11-9/11
  • 6/11-9/11
  • 4 total stops
  • 41h 00m total
  • London to St. Louis
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24/3
  • 24/3
  • 3 total stops
  • 41h 18m total
  • London to St. Louis
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£30 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 October 2025
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Find flight deals from Luton to St. Louis

Enter your travel dates to find the best prices.

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 24 October 2025.

Tue 28/1006:15LTN - STL
3 stops38h 14mMultiple Airlines
Wed 5/1115:50STL - LTN
2 stops21h 35mMultiple Airlines
Deal found 23/10£943
Thu 6/1119:20LTN - STL
2 stops24h 35mMultiple Airlines
Sun 9/1115:50STL - LTN
2 stops16h 25mMultiple Airlines
Deal found 23/10£978
Sat 6/1206:15LTN - STL
3 stops22h 30mMultiple Airlines
Sat 13/1216:05STL - LTN
2 stops16h 35mMultiple Airlines
Deal found 22/10£986
Thu 20/1121:40LTN - STL
3 stops32h 22mMultiple Airlines
Thu 27/1116:05STL - LTN
2 stops22h 50mMultiple Airlines
Deal found 23/10£1,199
Thu 30/1020:00LTN - STL
2 stops24h 29mMultiple Airlines
Wed 31/1216:05STL - LTN
2 stops18h 55mMultiple Airlines
Deal found 23/10£1,585

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 24 October 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

Thu 6/11

19:20-13:55

2 stops24h 35m

Lambert-St Louis

Sun 9/11

15:50-14:15

2 stops16h 25m

£978

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sat 6/12

06:15-22:45

3 stops22h 30m

Lambert-St Louis

Sat 13/12

16:05-14:40

2 stops16h 35m

£986

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 19/12

05:50-20:51

2 stops21h 01m

Lambert-St Louis

Sat 3/1

16:05-15:35

2 stops17h 30m

£1,402

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sat 20/12

21:00-13:55

2 stops22h 55m

Lambert-St Louis

Sat 3/1

05:22-07:35

2 stops20h 13m

£1,934

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 24/3

08:00-20:18

3 stops41h 18m

£445

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 11/11

20:50-09:07

3 stops42h 17m

£517

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Mon 10/11

08:00-09:07

2 stops31h 07m

£529

Flights are sorted by cheapest return flights first.

Deals found on 22/10

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.

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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?

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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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