Find flights
When to book
FAQs

Cheap flights from London Luton Airport to St. Louis from £420

LTN — STL
2 Oct — 9 Oct1
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

Tue 13/1021:50 -
3 stops26h 51m
Tue 20/1012:10 -
2 stops20h 25m
Deal found 28/8£1,029
Mon 7/919:55 -
3 stops28h 46m
Wed 7/1008:55 -
3 stops18h 30m
Deal found 29/8£1,058
Sat 26/921:50 -
2 stops21h 35m
Sat 3/1012:10 -
2 stops16h 50m
Deal found 29/8£1,094
Wed 14/1019:55 -
3 stops28h 46m
Wed 21/1012:10 -
2 stops15h 15m
Deal found 29/8£1,096
Wed 7/1021:50 -
3 stops26h 51m
Thu 22/1014:40 -
2 stops15h 45m
Deal found 1/9£1,114
Sun 20/907:35 -
2 stops18h 45m
Tue 6/1014:40 -
2 stops18h 10m
Deal found 31/8£1,166
Wed 30/919:55 -
3 stops28h 46m
Fri 2/1014:40 -
2 stops18h 20m
Deal found 1/9£1,171
Fri 2/1021:50 -
3 stops28h 30m
Fri 16/1012:10 -
2 stops16h 50m
Deal found 31/8£1,177
Mon 5/1021:20 -
3 stops29h 00m
Fri 16/1012:10 -
2 stops16h 50m
Deal found 31/8£1,179
Sun 4/1008:30 -
2 stops34h 55m
Fri 16/1014:40 -
2 stops17h 20m
Deal found 31/8£1,213
Tue 29/921:50 -
3 stops28h 30m
Tue 6/1012:10 -
2 stops15h 20m
Deal found 1/9£1,213

Find flight deals from Luton to St. Louis

Round-trip from

£1,029

One-way from

£420

Popular in

August

Cheapest in

February

Average price

£692
13/10-20/10
  • 13/10-20/10
  • 5 total stops
  • 47h 16m total
  • London to St. Louis
Search Deals
8/9
  • 8/9
  • 3 total stops
  • 30h 45m total
  • London to St. Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£56 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
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 13/10

21:50-18:41

3 stops26h 51m

Lambert-St Louis

Tue 20/10

12:10-14:35

2 stops20h 25m

£1,029

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Wed 14/10

19:55-18:41

3 stops28h 46m

Lambert-St Louis

Wed 21/10

12:10-09:25

2 stops15h 15m

£1,096

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Sun 20/9

07:35-20:20

2 stops18h 45m

Lambert-St Louis

Tue 6/10

14:40-14:50

2 stops18h 10m

£1,166

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Fri 2/10

21:50-20:20

3 stops28h 30m

Lambert-St Louis

Fri 16/10

12:10-11:00

2 stops16h 50m

£1,177

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Mon 5/10

21:20-20:20

3 stops29h 00m

Lambert-St Louis

Fri 16/10

12:10-11:00

2 stops16h 50m

£1,179

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Sun 4/10

08:30-13:25

2 stops34h 55m

Lambert-St Louis

Fri 16/10

14:40-14:00

2 stops17h 20m

£1,213
Fastest return journey

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Wed 23/9

07:00-18:41

2 stops17h 41m

Lambert-St Louis

Tue 29/9

12:10-11:00

2 stops16h 50m

£1,347

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Tue 22/12

08:55-21:08

3 stops18h 13m

Lambert-St Louis

Tue 29/12

11:31-16:05

3 stops22h 34m

£1,553

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Sun 11/10

09:15-20:20

2 stops17h 05m

Lambert-St Louis

Mon 12/10

08:55-21:05

3 stops30h 10m

£1,681
Cheapest one-way

LondonSt. Louis

LTN London Luton - STL Lambert-St Louis

LTNSTL

London Luton

Tue 8/9

19:50-20:35

3 stops30h 45m

£420

Flights are sorted by cheapest return flights first.

Deals found on 29/8

Showing 1-10 of 20 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

Related info for your journey

  • 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

Fly with Cheapflights

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.