Find flights
When to book
FAQs

Cheap flights from London Luton Airport to St. Louis from £283

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 31/3. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — STL
6 Mar — 13 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 4 February 2026.

Mon 25/508:15
LTN
-
STL
2 stops17h 49m
Multiple Airlines
Fri 5/607:30
STL
-
LTN
2 stops30h 45m
Multiple Airlines
Deal found 2/2£966
Fri 13/305:50
LTN
-
STL
2 stops17h 03m
Multiple Airlines
Tue 17/316:05
STL
-
LTN
2 stops20h 45m
Multiple Airlines
Deal found 3/2£1,285
Fri 6/205:50
LTN
-
STL
2 stops15h 39m
Multiple Airlines
Sat 14/213:11
STL
-
LTN
3 stops27h 44m
Multiple Airlines
Deal found 2/2£1,599
Fri 6/305:50
LTN
-
STL
2 stops15h 39m
Multiple Airlines
Fri 13/306:00
STL
-
LTN
2 stops21h 55m
Multiple Airlines
Deal found 3/2£1,857
Tue 3/310:55
LTN
-
STL
2 stops33h 00m
Multiple Airlines
Tue 10/316:05
STL
-
LTN
2 stops20h 45m
Multiple Airlines
Deal found 2/2£2,027

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 4 February 2026.

Round-trip from

£966

One-way from

£283

Popular in

July

Cheapest in

March

Average price

£613
25/5-5/6
  • 25/5-5/6
  • 4 total stops
  • 48h 34m total
  • London to St. Louis
Search Deals
31/3
  • 31/3
  • 3 total stops
  • 46h 40m total
  • London to St. Louis
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 4 February 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

Mon 25/5

08:15-20:04

2 stops17h 49m

Lambert-St Louis

Fri 5/6

07:30-20:15

2 stops30h 45m

£966

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 13/3

05:50-17:53

2 stops17h 03m

Lambert-St Louis

Tue 17/3

16:05-17:50

2 stops20h 45m

£1,285

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 6/3

05:50-15:29

2 stops15h 39m

Lambert-St Louis

Fri 13/3

06:00-08:55

2 stops21h 55m

£1,857

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 3/3

10:55-13:55

2 stops33h 00m

Lambert-St Louis

Tue 10/3

16:05-17:50

2 stops20h 45m

£2,027

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 31/3

17:50-10:30

3 stops46h 40m

£283

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Wed 1/4

15:55-20:42

3 stops34h 47m

£322

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 15/3

18:40-12:15

3 stops46h 35m

£360

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 17/4

17:50-21:00

3 stops57h 10m

£406

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sat 14/3

18:30-11:19

3 stops45h 49m

£417

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 2/4

14:45-12:21

3 stops51h 36m

£459

Flights are sorted by cheapest return flights first.

Deals found on 3/2

Showing 1-10 of 13 results
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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Luton to St. Louis?

Deals for Luton to St. Louis flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.