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Cheap flights from London Luton Airport to St. Louis from £356

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Luton Airport to St. Louis departing on 21/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from London Luton Airport to St. Louis

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:05 - 20:25
LTN
-
STL
20h 20m
2 stops
Multiple Airlines Logo
07:05 - 09:25
STL
-
LTN
20h 20m
3 stops
£837Multiple Airlines
Sun, 17 May - Sun, 24 May
Multiple Airlines Logo
08:00 - 12:06
LTN
-
STL
34h 06m
3 stops
Multiple Airlines Logo
14:40 - 15:25
STL
-
LTN
18h 45m
2 stops
£854Multiple Airlines
Fri, 12 Jun - Sun, 5 Jul
Multiple Airlines Logo
06:05 - 20:25
LTN
-
STL
20h 20m
2 stops
Multiple Airlines Logo
07:05 - 12:55
STL
-
LTN
23h 50m
2 stops
£957Multiple Airlines
Fri, 15 May - Fri, 22 May
Multiple Airlines Logo
06:05 - 20:25
LTN
-
STL
20h 20m
2 stops
Multiple Airlines Logo
07:05 - 12:55
STL
-
LTN
23h 50m
2 stops
£964Multiple Airlines
Fri, 15 May - Fri, 22 May
Multiple Airlines Logo
05:40 - 12:06
LTN
-
STL
36h 26m
3 stops
Multiple Airlines Logo
14:15 - 11:25
STL
-
LTN
15h 10m
2 stops
£1,012Multiple Airlines
Wed, 13 May - Sun, 24 May
Multiple Airlines Logo
05:40 - 12:06
LTN
-
STL
36h 26m
3 stops
Multiple Airlines Logo
07:05 - 19:55
STL
-
LTN
30h 50m
3 stops
£1,018Multiple Airlines
Wed, 13 May - Sun, 24 May
Multiple Airlines Logo
06:05 - 20:25
LTN
-
STL
20h 20m
2 stops
Multiple Airlines Logo
14:40 - 19:55
STL
-
LTN
23h 15m
3 stops
£1,059Multiple Airlines
Sun, 28 Jun - Thu, 16 Jul
Multiple Airlines Logo
06:05 - 20:25
LTN
-
STL
20h 20m
2 stops
Multiple Airlines Logo
08:55 - 20:00
STL
-
LTN
29h 05m
3 stops
£1,064Multiple Airlines
Sun, 28 Jun - Sat, 11 Jul
Multiple Airlines Logo
06:05 - 20:25
LTN
-
STL
20h 20m
2 stops
Multiple Airlines Logo
08:55 - 20:00
STL
-
LTN
29h 05m
3 stops
£1,069Multiple Airlines
Sun, 28 Jun - Sat, 11 Jul
Multiple Airlines Logo
19:55 - 20:25
LTN
-
STL
30h 30m
3 stops
Multiple Airlines Logo
07:05 - 11:25
STL
-
LTN
22h 20m
3 stops
£1,084Multiple Airlines
Sun, 17 May - Sun, 24 May

momondo Fare Finder

 
Customise your flight search to find flights from London Luton Airport 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, momondo users made 279,928 searches. Data last updated 4 April 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
Fastest return journey

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 17/5

06:05-20:25

2 stops20h 20m

Lambert-St Louis

Sun 24/5

07:05-09:25

3 stops20h 20m

£837

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 12/6

08:00-12:06

3 stops34h 06m

Lambert-St Louis

Sun 5/7

14:40-15:25

2 stops18h 45m

£854

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 15/5

06:05-20:25

2 stops20h 20m

Lambert-St Louis

Fri 22/5

07:05-12:55

2 stops23h 50m

£957

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 15/5

06:05-20:25

2 stops20h 20m

Lambert-St Louis

Fri 22/5

07:05-12:55

2 stops23h 50m

£964

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Wed 13/5

05:40-12:06

3 stops36h 26m

Lambert-St Louis

Sun 24/5

14:15-11:25

2 stops15h 10m

£1,012

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Wed 13/5

05:40-12:06

3 stops36h 26m

Lambert-St Louis

Sun 24/5

07:05-19:55

3 stops30h 50m

£1,018

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 28/6

06:05-20:25

2 stops20h 20m

Lambert-St Louis

Thu 16/7

14:40-19:55

3 stops23h 15m

£1,059

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 28/6

06:05-20:25

2 stops20h 20m

Lambert-St Louis

Sat 11/7

08:55-20:00

3 stops29h 05m

£1,064

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 28/6

06:05-20:25

2 stops20h 20m

Lambert-St Louis

Sat 11/7

08:55-20:00

3 stops29h 05m

£1,069

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 17/5

19:55-20:25

3 stops30h 30m

Lambert-St Louis

Sun 24/5

07:05-11:25

3 stops22h 20m

£1,084

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from London Luton Airport to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Saturday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as £604. Flights from London Luton Airport to St. Louis on a Sunday will generally be more expensive and average around £775. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

When to book flights from London Luton Airport to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from London Luton Airport to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Luton Airport to St. Louis (LTN to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Luton Airport to St. Louis

Fastest flight time

23h 35m

Direct flights

None
The fastest flight from London Luton Airport to St. Louis takes 23h 35m
There are no direct flights from London Luton Airport to St. Louis. There are no popular flight routes from London Luton Airport to St. Louis.
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Frequently asked questions about flying from London Luton Airport to St. Louis

  • How far is London Luton to Lambert-St Louis by plane?

    London Luton and Lambert-St Louis are 4176.8 mi apart from one another. 23h 35m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London Luton Airport to Lambert-St Louis Airport?

    Prices for flights from London Luton Airport to Lambert-St Louis Airport refresh daily.

  • How old do you have to be to fly from London Luton Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Luton Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Collinsville

Why use momondo?

Why should I use momondo to find a flight deal from London to St. Louis?

Finding the right flight to St. Louis from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from London to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to St. Louis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from London.

I’m not ready to book a flight from London to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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