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Cheap flights from London Luton Airport to St. Louis from £411

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 13/6. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — STL
26 Feb — 5 Mar1
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 27 January 2026.

Sun 19/421:50
LTN
-
STL
3 stops26h 37m
Multiple Airlines
Tue 19/507:30
STL
-
LTN
3 stops29h 20m
Multiple Airlines
Deal found 25/1£868
Thu 12/318:45
LTN
-
STL
2 stops25h 10m
Multiple Airlines
Thu 19/314:19
STL
-
LTN
2 stops13h 26m
Multiple Airlines
Deal found 26/1£942
Wed 11/310:25
LTN
-
STL
3 stops34h 04m
Multiple Airlines
Wed 18/316:05
STL
-
LTN
2 stops19h 55m
Multiple Airlines
Deal found 25/1£960
Sun 19/421:50
LTN
-
STL
3 stops26h 37m
Multiple Airlines
Sun 26/416:05
STL
-
LTN
3 stops23h 00m
Multiple Airlines
Deal found 25/1£1,020
Thu 3/909:25
LTN
-
STL
2 stops16h 37m
Multiple Airlines
Thu 10/909:10
STL
-
LTN
3 stops23h 25m
Multiple Airlines
Deal found 25/1£1,085
Mon 24/818:05
LTN
-
STL
2 stops25h 20m
Multiple Airlines
Thu 3/912:10
STL
-
LTN
3 stops25h 30m
Multiple Airlines
Deal found 25/1£1,157
Mon 27/412:15
LTN
-
STL
3 stops33h 09m
Multiple Airlines
Fri 1/513:00
STL
-
LTN
3 stops29h 10m
Multiple Airlines
Deal found 26/1£1,351

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 27 January 2026.

Round-trip from

£868

One-way from

£411

Popular in

July

Cheapest in

March

Average price

£551
19/4-19/5
  • 19/4-19/5
  • 6 total stops
  • 55h 57m total
  • London to St. Louis
Search Deals
13/6
  • 13/6
  • 3 total stops
  • 45h 52m total
  • London to St. Louis
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£72 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 27 January 2026.
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

Sun 19/4

21:50-18:27

3 stops26h 37m

Lambert-St Louis

Tue 19/5

07:30-18:50

3 stops29h 20m

£868

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 19/4

21:50-18:27

3 stops26h 37m

Lambert-St Louis

Sun 26/4

16:05-21:05

3 stops23h 00m

£1,020

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 12/3

18:45-14:55

2 stops25h 10m

Lambert-St Louis

Thu 19/3

14:19-08:45

2 stops13h 26m

£1,032

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Mon 27/4

12:15-15:24

3 stops33h 09m

Lambert-St Louis

Fri 1/5

13:00-00:10

3 stops29h 10m

£1,351

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Mon 27/4

12:15-15:24

3 stops33h 09m

Lambert-St Louis

Sun 3/5

07:30-18:30

3 stops29h 00m

£1,471

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Mon 23/2

13:20-17:44

3 stops34h 24m

Lambert-St Louis

Fri 27/2

16:05-21:55

2 stops23h 50m

£2,006

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sat 13/6

21:25-13:17

3 stops45h 52m

£411

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 5/4

21:50-23:25

3 stops55h 35m

£418

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 12/2

14:10-06:51

3 stops46h 41m

£424

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 10/2

20:50-14:09

3 stops47h 19m

£462

Flights are sorted by cheapest return flights first.

Deals found on 25/1

Showing 1-10 of 13 results
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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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