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Cheap flights from London Luton Airport to St. Louis from £378

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 16/12. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — STL
10 Dec — 17 Dec1
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 10 November 2025.

Round-trip from

£1,650

One-way from

£378

Popular in

December

Cheapest in

March

Average price

£738
22/11-29/11
  • 22/11-29/11
  • 4 total stops
  • 32h 04m total
  • London to St. Louis
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16/12
  • 16/12
  • 3 total stops
  • 46h 13m total
  • London to St. Louis
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£38 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).
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Average for round-trip flights in November 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 10 November 2025.

Sat 15/1106:00LTN - STL
2 stops15h 29mMultiple Airlines
Thu 27/1116:05STL - LTN
3 stops22h 05mMultiple Airlines
Deal found 10/11£1,437
Sat 22/1106:00LTN - STL
2 stops15h 29mMultiple Airlines
Sat 29/1116:05STL - LTN
2 stops16h 35mMultiple Airlines
Deal found 9/11£1,650
Tue 23/1209:00LTN - STL
2 stops34h 55mMultiple Airlines
Tue 30/1216:05STL - LTN
2 stops21h 25mMultiple Airlines
Deal found 8/11£1,950

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 10 November 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

Sat 22/11

06:00-15:29

2 stops15h 29m

Lambert-St Louis

Sat 29/11

16:05-14:40

2 stops16h 35m

£1,650

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 23/12

09:00-13:55

2 stops34h 55m

Lambert-St Louis

Tue 30/12

16:05-19:30

2 stops21h 25m

£1,950

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 16/12

06:20-22:33

3 stops46h 13m

£378

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sat 15/11

09:25-09:40

3 stops54h 15m

£472

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 27/11

06:00-15:29

3 stops39h 29m

£733

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 18/12

07:15-15:29

3 stops38h 14m

£891

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 19/12

05:50-23:55

2 stops24h 05m

£940

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 21/11

05:50-15:29

2 stops15h 39m

£1,080

Flights are sorted by cheapest return flights first.

Deals found on 8/11

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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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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