Which airlines fly to St. Louis?

Finnair is the airline most momondo users in United Kingdom opt for when booking flights to St. Louis. British Airways, Virgin Atlantic and Lufthansa are also popular choices when flying to St. Louis from United Kingdom. Most major airlines flying from United Kingdom to St. Louis will offer flights on a regular basis, though your options may vary depending on what airport you fly from.

Finnair Flights to St. Louis

Finnair operates around 5 flights into St. Louis in any given week. The most common departure point for these flights was from Dallas/Fort Worth, with the best round-trip Finnair deal found being £504 (Edinburgh Turnhouse to St. Louis). Users have rated Finnair 7.6/10 in over 1,323 reviews on momondo.

Scandinavian Airlines Flights to St. Louis

Scandinavian Airlines flies to St. Louis 6 times per week usually, making it a popular airline to fly with, particularly when heading to St. Louis from Atlanta Hartsfield-Jackson. Scandinavian Airlines (rating: 7.4, 1,484 reviews) varies in price depending on when and where you want to fly to St. Louis from. The best Scandinavian Airlines ticket price found on momondo to St. Louis was from London Heathrow (£475 round-trip).

How long does it take to fly to St. Louis?

If you’re flying from a popular airport in United Kingdom, such as London Heathrow or Manchester, and flying into St. Louis, then you can expect flight times to average 11h 44m and 15h 28m, respectively.

£315 Cheap Flights to St. Louis in 2025

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

Round-trip

One-way

Last minute

Cheap return flights

06:40 - 21:58LHR-STL

21h 18m2 stops

13:55 - 21:40STL-LHR

25h 45m2 stops

£594Scandinavian Airlines

Find Deal

Mon, 24 Nov - Mon, 1 Dec

07:05 - 21:38LHR-STL

20h 33m3 stops

11:44 - 16:00STL-LHR

22h 16m2 stops

£596Scandinavian Airlines

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Thu, 6 Nov - Mon, 10 Nov

07:05 - 21:58LHR-STL

20h 53m3 stops

13:55 - 16:00STL-LHR

20h 05m2 stops

£597Scandinavian Airlines

Find Deal

Mon, 24 Nov - Mon, 1 Dec

11:45 - 17:29LHR-STL

11h 44m1 stop

13:40 - 07:15STL-LHR

11h 35m1 stop

£636Virgin Atlantic

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Wed, 8 Oct - Wed, 15 Oct

06:30 - 14:55LHR-STL

13h 25m1 stop

13:10 - 06:40STL-LHR

11h 30m1 stop

£643Lufthansa

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Fri, 31 Oct - Thu, 13 Nov

19:30 - 13:55LHR-STL

24h 25m1 stop

18:43 - 11:15STL-LHR

10h 32m1 stop

£645Lufthansa

Find Deal

Thu, 6 Nov - Mon, 10 Nov

11:05 - 23:23LHR-STL

18h 18m1 stop

11:44 - 06:25STL-LHR

12h 41m1 stop

£645Virgin Atlantic

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Mon, 24 Nov - Mon, 1 Dec

13:30 - 23:56LHR-STL

16h 26m2 stops

06:00 - 07:50STL-LHR

19h 50m1 stop

£649Finnair

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Mon, 24 Nov - Mon, 1 Dec

09:50 - 23:56MAN-STL

20h 06m2 stops

14:08 - 19:05STL-MAN

22h 57m2 stops

£779British Airways

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Sat, 15 Nov - Thu, 20 Nov

08:40 - 21:00LCY-STL

18h 20m2 stops

10:44 - 13:50STL-LCY

21h 06m2 stops

£876British Airways

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Sat, 8 Nov - Sat, 22 Nov

Fly from

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

06:40-21:58

2 stops21h 18m

Lambert-St Louis

Mon 1/12

13:55-21:40

2 stops25h 45m

£594

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 6/11

07:05-21:38

3 stops20h 33m

Lambert-St Louis

Mon 10/11

11:44-16:00

2 stops22h 16m

£596

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

07:05-21:58

3 stops20h 53m

Lambert-St Louis

Mon 1/12

13:55-16:00

2 stops20h 05m

£597

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 8/10

11:45-17:29

1 stop11h 44m

Lambert-St Louis

Wed 15/10

13:40-07:15

1 stop11h 35m

£636

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Fri 31/10

06:30-14:55

1 stop13h 25m

Lambert-St Louis

Thu 13/11

13:10-06:40

1 stop11h 30m

£643

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 6/11

19:30-13:55

1 stop24h 25m

Lambert-St Louis

Mon 10/11

18:43-11:15

1 stop10h 32m

£645

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

11:05-23:23

1 stop18h 18m

Lambert-St Louis

Mon 1/12

11:44-06:25

1 stop12h 41m

£645

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

13:30-23:56

2 stops16h 26m

Lambert-St Louis

Mon 1/12

06:00-07:50

1 stop19h 50m

£649

ManchesterSt. Louis

MAN - STL

MANSTL

Manchester

Sat 15/11

09:50-23:56

2 stops20h 06m

Lambert-St Louis

Thu 20/11

14:08-19:05

2 stops22h 57m

£779

LondonSt. Louis

LCY - STL

LCYSTL

London City

Sat 8/11

08:40-21:00

2 stops18h 20m

Lambert-St Louis

Sat 22/11

10:44-13:50

2 stops21h 06m

£876

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

St. Louis flights insights and trends

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

Prices

Other information

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

The month of March is, on average, the cheapest month to fly to St. Louis from United Kingdom, with most prices found around £546. If you’re not able to fly to St. Louis in March, then January is your next best option. Flight prices from United Kingdom to St. Louis during January average around £556.

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

Our data shows that Wednesday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as £596. Flights from United Kingdom to St. Louis on a Sunday will generally be more expensive and average around £710. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our data shows that the cheapest United Kingdom to St. Louis flights are usually those with departure times in the evening. Our users have found flights to St. Louis in the evening for as low as £555. In contrast, the most expensive time of day to depart to St. Louis is in the morning when prices are around £653.

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 £712 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 £611 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 AIRPORT	February	16% cheaper	Flying from London Heathrow Airport to St. Louis costs on average just £601 in February
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM LONDON HEATHROW AIRPORT	August	22% more expensive	It costs about £869 for flights to St. Louis from London Heathrow Airport in August
MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM LONDON HEATHROW AIRPORT	July	674% more users visited	More momondo users searched in flights to St. Louis from London Heathrow Airport in July 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	£315
Best Round-Trip Price	£594
Fastest flight time	24h 57m
Popular in	August

The best one-way flight price to St. Louis from United Kingdom in the last 72 hours is £315 (London Gatwick to Lambert-St Louis).

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The best round-trip flight price to St. Louis from United Kingdom in the last 72 hours is £594 (London Heathrow to Lambert-St Louis).

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The fastest flight to St. Louis from United Kingdom takes 24h 57m (London Heathrow to Lambert-St Louis).

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August has the highest demand for flights to St. Louis, with a 10% price increase on average.

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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 13 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 £716. 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 £506.

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 September 2025, there are 14 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.

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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.