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Flights to Lambert-St Louis

£279 Cheap flights to St. Louis

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to St. Louis departing on 4/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from the United Kingdom to St. Louis

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
14:00 - 13:10LGW  London Gatwick-STL Lambert-St Louis
29h 10m2 stops Orlando Atlanta Hartsfield-Jackson
Multiple Airlines Logo
17:19 - 10:00STL  Lambert-St Louis-LGW London Gatwick
34h 41m1 stop Orlando
£520Multiple Airlines
Sun, 20 Sep - Sun, 27 Sep
Multiple Airlines Logo
14:00 - 16:11LGW  London Gatwick-STL Lambert-St Louis
32h 11m1 stop Orlando
Multiple Airlines Logo
18:39 - 10:00STL  Lambert-St Louis-LGW London Gatwick
33h 21m1 stop Orlando
£528Multiple Airlines
Fri, 4 Sep - Thu, 24 Sep
Finnair Logo
12:15 - 20:44LHR  London Heathrow-STL Lambert-St Louis
14h 29m1 stop Chicago O'Hare Intl
Finnair Logo
12:46 - 12:50STL  Lambert-St Louis-LHR London Heathrow
18h 04m1 stop Dallas/Fort Worth
£587Finnair
Wed, 16 Sep - Wed, 23 Sep
Finnair Logo
16:25 - 19:07LHR  London Heathrow-STL Lambert-St Louis
32h 42m1 stop Dallas/Fort Worth
Finnair Logo
17:18 - 10:50STL  Lambert-St Louis-LHR London Heathrow
11h 32m1 stop Chicago O'Hare Intl
£587Finnair
Tue, 15 Sep - Tue, 29 Sep
Lufthansa Logo
06:30 - 13:25LHR  London Heathrow-STL Lambert-St Louis
12h 55m1 stop Frankfurt am Main
Lufthansa Logo
19:01 - 11:55STL  Lambert-St Louis-LHR London Heathrow
10h 54m1 stop Chicago O'Hare Intl
£613Lufthansa
Tue, 22 Sep - Wed, 30 Sep
Lufthansa Logo
06:30 - 13:25LHR  London Heathrow-STL Lambert-St Louis
12h 55m1 stop Frankfurt am Main
Lufthansa Logo
08:40 - 10:40STL  Lambert-St Louis-LHR London Heathrow
20h 00m1 stop Washington, D.C. Dulles Intl
£613Lufthansa
Mon, 7 Sep - Tue, 15 Sep
Air Canada Logo
08:40 - 18:41LHR  London Heathrow-STL Lambert-St Louis
16h 01m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
12:10 - 06:30STL  Lambert-St Louis-LHR London Heathrow
12h 20m1 stop Montreal Pierre Elliott Trudeau Intl
£615Air Canada
Wed, 23 Sep - Tue, 6 Oct
Air Canada Logo
08:40 - 18:41LHR  London Heathrow-STL Lambert-St Louis
16h 01m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
12:10 - 10:00STL  Lambert-St Louis-LHR London Heathrow
15h 50m1 stop Montreal Pierre Elliott Trudeau Intl
£615Air Canada
Wed, 23 Sep - Wed, 7 Oct
Virgin Atlantic Logo
09:55 - 19:58LHR  London Heathrow-STL Lambert-St Louis
16h 03m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
Virgin Atlantic Logo
10:05 - 06:20STL  Lambert-St Louis-LHR London Heathrow
14h 15m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
£631Virgin Atlantic
Tue, 15 Sep - Tue, 29 Sep
Virgin Atlantic Logo
09:55 - 19:58LHR  London Heathrow-STL Lambert-St Louis
16h 03m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
Virgin Atlantic Logo
12:00 - 11:20STL  Lambert-St Louis-LHR London Heathrow
17h 20m1 stop Atlanta Hartsfield-Jackson
£635Virgin Atlantic
Tue, 15 Sep - Tue, 29 Sep

momondo Fare Finder

 
Locate flights to Lambert-St Louis that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 279,928 searches and data was last updated on 14 August 2026.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSt. Louis

LGW London Gatwick - STL Lambert-St Louis

LGWSTL

London Gatwick

Sun 20/9

14:00-13:10

2 stops29h 10m

Lambert-St Louis

Sun 27/9

17:19-10:00

1 stop34h 41m

£520

LondonSt. Louis

LGW London Gatwick - STL Lambert-St Louis

LGWSTL

London Gatwick

Fri 4/9

14:00-16:11

1 stop32h 11m

Lambert-St Louis

Thu 24/9

18:39-10:00

1 stop33h 21m

£528

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Wed 16/9

12:15-20:44

1 stop14h 29m

Lambert-St Louis

Wed 23/9

12:46-12:50

1 stop18h 04m

£587

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Tue 15/9

16:25-19:07

1 stop32h 42m

Lambert-St Louis

Tue 29/9

17:18-10:50

1 stop11h 32m

£587
Fastest return journey

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Tue 22/9

06:30-13:25

1 stop12h 55m

Lambert-St Louis

Wed 30/9

19:01-11:55

1 stop10h 54m

£613

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Mon 7/9

06:30-13:25

1 stop12h 55m

Lambert-St Louis

Tue 15/9

08:40-10:40

1 stop20h 00m

£613

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Wed 23/9

08:40-18:41

2 stops16h 01m

Lambert-St Louis

Tue 6/10

12:10-06:30

1 stop12h 20m

£615

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Wed 23/9

08:40-18:41

2 stops16h 01m

Lambert-St Louis

Wed 7/10

12:10-10:00

1 stop15h 50m

£615

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Tue 15/9

09:55-19:58

2 stops16h 03m

Lambert-St Louis

Tue 29/9

10:05-06:20

2 stops14h 15m

£631

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Tue 15/9

09:55-19:58

2 stops16h 03m

Lambert-St Louis

Tue 29/9

12:00-11:20

1 stop17h 20m

£635

Flights are sorted by cheapest return flights first.

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

St. Louis flights insights and trends

Explore insights for your St. Louis flight to craft the best travel plan

What is the cheapest month to fly to St. Louis?

The month of February is, on average, the cheapest month to fly to St. Louis from United Kingdom, with most prices found around £640. If you’re not able to fly to St. Louis in February, then January is your next best option. Flight prices from United Kingdom to St. Louis during January average around £653.

What is the absolute cheapest flight to St. Louis?

See prices from:

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 £591. Flights from United Kingdom to St. Louis on a Sunday will generally be more expensive and average around £921. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around £756 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from United Kingdom for as low as £593 on momondo.

Cheapest flights to Lambert-St Louis

Find the cheapest flights to Lambert-St Louis from your nearest city or airport
Find flights from London Heathrow Airport to St. Louis
CHEAPEST MONTH TO FLY TO ST. LOUIS FROM LONDON HEATHROW AIRPORTFebruary30% cheaperFlying from London Heathrow Airport to St. Louis costs on average just £535 in February
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM LONDON HEATHROW AIRPORTDecember29% more expensiveIt costs about £979 for flights to St. Louis from London Heathrow Airport in December
MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM LONDON HEATHROW AIRPORTMay476% more users visitedMore momondo users searched in flights to St. Louis from London Heathrow Airport in May than any other month

Cheap St. Louis flight deals and tips

Summary info about St. Louis flight prices, duration and airlines

Best One-Way Price

£279

Best Round-Trip Price

£520

Fastest flight time

19h 34m

Popular in

July
The best one-way flight price to St. Louis from United Kingdom in the last 5 days is £279 (London Gatwick to Lambert-St Louis).
Search Deals
The best return flight price to St. Louis from United Kingdom in the last 5 days is £520 (London Gatwick to Lambert-St Louis).
Search Deals
The fastest flight to St. Louis from United Kingdom takes 19h 34m (London City to Lambert-St Louis).
Search Deals
July has the highest demand for flights to St. Louis, with a 19% price increase on average.
Search Deals

Frequently asked questions about flying to St. Louis

How far in advance should I book a flight to St. Louis?

Most flyers found that booking tickets 21 days in advance of their planned departure date is the best time to get cheap flights to St. Louis. During this timeframe, flight prices are around £741. Keep in mind that you might also find cheap flights to St. Louis outside of this time window. In fact, momondo users recently found flights from United Kingdom to St. Louis for £369.

Is there an alternative airport near St. Louis?

Belleville Airport, Marion Williamson County Airport or Springfield Capital Airport can be an alternative airport used for travel to St. Louis.

When did momondo last update prices for flights to Lambert-St Louis Airport?

Prices for flights to Lambert-St Louis Airport are refreshed on a daily basis.

How many operators does momondo search for flights to Lambert-St Louis Airport?

As of August 2026, there are 12 operators available to choose from for flights to Lambert-St Louis Airport.

How old do you have to be to fly to Lambert-St Louis Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Lambert-St Louis Airport.

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

The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near St. Louis?

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

Why use momondo?

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

Finding the right flight to St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options 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 to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight to St. Louis.

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

Yes. momondo can track flight prices for St. Louis and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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