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Cheap flights from London Luton Airport to St. Louis from £372

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 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — STL
6 Jun — 13 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap 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 7 May 2026.

Tue 9/619:55
LTN
-
STL
2 stops23h 30m
Multiple Airlines
Sun 21/614:15
STL
-
LTN
3 stops18h 20m
Multiple Airlines
Deal found 5/5£733
Fri 26/606:05
LTN
-
STL
2 stops20h 20m
Multiple Airlines
Sun 12/712:10
STL
-
LTN
3 stops28h 10m
Multiple Airlines
Deal found 2/5£874
Wed 2/918:10
LTN
-
STL
3 stops31h 57m
Multiple Airlines
Wed 23/908:55
STL
-
LTN
3 stops23h 30m
Multiple Airlines
Deal found 2/5£936
Wed 17/605:40
LTN
-
STL
3 stops20h 29m
Multiple Airlines
Wed 24/613:20
STL
-
LTN
2 stops22h 45m
Multiple Airlines
Deal found 3/5£992
Thu 18/609:25
LTN
-
STL
2 stops16h 42m
Multiple Airlines
Thu 25/608:40
STL
-
LTN
3 stops28h 40m
Multiple Airlines
Deal found 4/5£1,044
Thu 24/921:50
LTN
-
STL
3 stops26h 51m
Multiple Airlines
Wed 30/908:55
STL
-
LTN
2 stops22h 50m
Multiple Airlines
Deal found 6/5£1,105
Fri 8/506:20
LTN
-
STL
3 stops35h 46m
Multiple Airlines
Sun 10/513:05
STL
-
LTN
2 stops18h 40m
Multiple Airlines
Deal found 4/5£1,108
Wed 13/506:15
LTN
-
STL
3 stops19h 54m
Multiple Airlines
Tue 19/513:05
STL
-
LTN
2 stops15h 55m
Multiple Airlines
Deal found 3/5£1,134
Sun 19/709:00
LTN
-
STL
2 stops17h 22m
Multiple Airlines
Wed 19/814:40
STL
-
LTN
2 stops18h 45m
Multiple Airlines
Deal found 6/5£1,150

Find 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 7 May 2026.

Round-trip from

£733

One-way from

£372

Popular in

July

Cheapest in

January

Average price

£700
9/6-21/6
  • 9/6-21/6
  • 5 total stops
  • 41h 50m total
  • London to St. Louis
Search Deals
31/5
  • 31/5
  • 3 total stops
  • 49h 43m total
  • London to St. Louis
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£64 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 7 May 2026.
Use the filters below to find and compare flights from London Luton Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 9/6

19:55-13:25

2 stops23h 30m

Lambert-St Louis

Sun 21/6

14:15-14:35

3 stops18h 20m

£733

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 26/6

06:05-20:25

2 stops20h 20m

Lambert-St Louis

Sun 12/7

12:10-22:20

3 stops28h 10m

£874

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Wed 2/9

18:10-20:07

3 stops31h 57m

Lambert-St Louis

Wed 23/9

08:55-14:25

3 stops23h 30m

£936

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Wed 17/6

05:40-20:09

3 stops20h 29m

Lambert-St Louis

Wed 24/6

13:20-18:05

2 stops22h 45m

£992

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 18/6

09:25-20:07

2 stops16h 42m

Lambert-St Louis

Thu 25/6

08:40-19:20

3 stops28h 40m

£1,044

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 24/9

21:50-18:41

3 stops26h 51m

Lambert-St Louis

Wed 30/9

08:55-13:45

2 stops22h 50m

£1,105

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 25/8

20:00-14:02

2 stops24h 02m

Lambert-St Louis

Wed 30/9

15:30-12:50

2 stops15h 20m

£1,108
Fastest return journey

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 19/7

09:00-20:22

2 stops17h 22m

Lambert-St Louis

Wed 19/8

14:40-15:25

2 stops18h 45m

£1,150

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 19/5

19:55-20:25

3 stops30h 30m

Lambert-St Louis

Wed 27/5

13:05-12:35

2 stops17h 30m

£1,325
Cheapest one-way

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 31/5

21:50-17:33

3 stops49h 43m

£372

Flights are sorted by cheapest return flights first.

Deals found on 5/5

Showing 1-10 of 17 resultsSorted by cheapest first
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.

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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