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Cheap flights from London Luton Airport to St. Louis from £384

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — STL
5 Sep — 12 Sep1
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 6 August 2026.

Tue 15/918:00 -
2 stops25h 25m
Tue 22/914:40 -
2 stops20h 15m
Deal found 1/8£876
Wed 16/906:15 -
2 stops13h 45m
Wed 23/914:40 -
2 stops18h 45m
Deal found 2/8£922
Sun 30/806:05 -
2 stops20h 19m
Thu 3/908:55 -
3 stops32h 15m
Deal found 3/8£931
Thu 3/919:55 -
2 stops24h 07m
Thu 10/912:10 -
2 stops15h 15m
Deal found 4/8£1,139
Wed 2/907:00 -
2 stops19h 22m
Wed 30/912:10 -
2 stops20h 15m
Deal found 2/8£1,158
Sun 9/819:55 -
3 stops28h 47m
Fri 14/812:10 -
2 stops27h 30m
Deal found 1/8£1,162
Sat 19/919:55 -
3 stops30h 25m
Sat 26/914:40 -
2 stops17h 55m
Deal found 5/8£1,189

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 6 August 2026.

Round-trip from

£876

One-way from

£384

Popular in

August

Cheapest in

February

Average price

£878
15/9-22/9
  • 15/9-22/9
  • 4 total stops
  • 45h 40m total
  • London to St. Louis
Search Deals
2/9
  • 2/9
  • 3 total stops
  • 36h 52m total
  • London to St. Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£42 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 August 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 6 August 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 London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Tue 15/9

18:00-13:25

2 stops25h 25m

Lambert-St Louis

Tue 22/9

14:40-16:55

2 stops20h 15m

£876
Fastest return journey

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Wed 16/9

06:15-14:00

2 stops13h 45m

Lambert-St Louis

Wed 23/9

14:40-15:25

2 stops18h 45m

£924

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Sun 30/8

06:05-20:24

2 stops20h 19m

Lambert-St Louis

Thu 3/9

08:55-23:10

3 stops32h 15m

£931

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Thu 3/9

19:55-14:02

2 stops24h 07m

Lambert-St Louis

Thu 10/9

12:10-09:25

2 stops15h 15m

£1,139

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Wed 2/9

07:00-20:22

2 stops19h 22m

Lambert-St Louis

Wed 30/9

12:10-14:25

2 stops20h 15m

£1,158

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Sat 19/9

19:55-20:20

3 stops30h 25m

Lambert-St Louis

Sat 26/9

14:40-14:35

2 stops17h 55m

£1,189

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Tue 25/8

19:55-18:42

3 stops28h 47m

Lambert-St Louis

Fri 25/9

15:30-14:35

2 stops17h 05m

£1,245

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Fri 23/10

07:00-18:41

2 stops17h 41m

Lambert-St Louis

Sun 1/11

16:05-13:45

2 stops15h 40m

£1,338

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Thu 15/10

09:15-13:25

2 stops34h 10m

Lambert-St Louis

Mon 26/10

16:05-21:05

3 stops24h 00m

£1,961
Cheapest one-way
Fastest single journey

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Sat 5/9

06:00-17:22

3 stops41h 22m

£397

Flights are sorted by cheapest return flights first.

Deals found on 5/8

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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