What is the cheapest airline that flies from Lambert-St Louis to United Kingdom?

United Airlines, KLM, and Delta are the most popular carriers operating from Lambert-St Louis to United Kingdom

What is the most punctual flight time for St. Louis to the United Kingdom flights?

Generally, flights departing at night tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Friday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

How often are flights from St. Louis to the United Kingdom delayed?

Historically, on average around 22% of flights between St. Louis and United Kingdom have experienced a delay on any given week. The average delay length over the past 12 months has been 118 minutes.

Which airline has the best punctuality record on St. Louis to the United Kingdom flights?

According to our data, British Airways have had the least number of delays on this route over the last 12 months; with about 22% of their flights experiencing any sort of delay.

How many flights depart from St. Louis to United Kingdom on average per week?

15 flights are operational weekly from St. Louis to United Kingdom as of August 2026. The most popular departure day for this route is Tue, with 33% of flights per week taking off on this day.

How many flights depart from St. Louis to United Kingdom on average per day?

The number of flights available between St. Louis and United Kingdom is 2 per day as of August 2026. The most frequent departure time is 9:00PM, with 100% of daily flights leaving in the evening.

What airlines fly to United Kingdom?

British Airways, American Airlines and United Airlines are the top three most popular airlines that fly to United Kingdom from St. Louis according to our data. British Airways is the first choice among our users, with 51% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 9 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

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

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

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

There are 9 operators available for flights from Lambert-St Louis Airport to United Kingdom as of August 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to United Kingdom.

What documentation or ID do you need to fly to United Kingdom?

The necessary travel and health documents for your United Kingdom trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$230 Cheap Flights from St. Louis to the United Kingdom in 2026

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

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:34 pm - 10:00 amSTL Lambert-St Louis-LGW London Gatwick

31h 26m1 stop Orlando

10:10 am - 9:40 amLGW London Gatwick-STL Lambert-St Louis

53h 30m2 stops Orlando Atlanta Hartsfield-Jackson

$610Multiple Airlines

Fri, Oct 23 - Tue, Nov 3

5:19 pm - 10:00 amSTL Lambert-St Louis-LGW London Gatwick

34h 41m1 stop Orlando

2:00 pm - 5:54 pmLGW London Gatwick-STL Lambert-St Louis

33h 54m1 stop Orlando

$660Multiple Airlines

Fri, Sep 25 - Wed, Sep 30

6:30 am - 7:10 amSTL Lambert-St Louis-LHR London Heathrow

18h 40m2 stops Newark Montreal Pierre Elliott Trudeau Intl

6:50 am - 3:41 pmLHR London Heathrow-STL Lambert-St Louis

14h 51m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$751United Airlines

Sun, Feb 7 - Tue, Feb 9

1:30 pm - 9:40 amSTL Lambert-St Louis-LHR London Heathrow

14h 10m1 stop Denver Intl

6:50 am - 3:41 pmLHR London Heathrow-STL Lambert-St Louis

14h 51m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$752United Airlines

Sun, Feb 7 - Tue, Feb 9

3:40 pm - 2:45 pmSTL Lambert-St Louis-LHR London Heathrow

17h 05m1 stop Frankfurt am Main

7:40 am - 11:24 pmLHR London Heathrow-STL Lambert-St Louis

21h 44m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$759Lufthansa

Wed, Nov 11 - Fri, Nov 13

11:29 am - 10:45 amSTL Lambert-St Louis-LHR London Heathrow

17h 16m2 stops Newark Frankfurt am Main

7:40 am - 10:24 pmLHR London Heathrow-STL Lambert-St Louis

20h 44m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$764Lufthansa

Tue, Nov 10 - Thu, Nov 12

11:32 am - 8:35 amSTL Lambert-St Louis-LHR London Heathrow

15h 03m1 stop Chicago O'Hare Intl

7:35 am - 6:17 pmLHR London Heathrow-STL Lambert-St Louis

16h 42m2 stops Madrid Barajas Chicago O'Hare Intl

$837Iberia

Tue, Nov 10 - Wed, Nov 18

1:06 pm - 2:55 pmSTL Lambert-St Louis-INV Inverness

19h 49m2 stops Chicago O'Hare Intl London Heathrow

7:35 am - 7:18 pmINV Inverness-STL Lambert-St Louis

17h 43m2 stops London Heathrow Charlotte Douglas

$840American Airlines

Wed, Oct 7 - Wed, Oct 14

11:32 am - 12:05 pmSTL Lambert-St Louis-LHR London Heathrow

18h 33m2 stops Chicago O'Hare Intl Madrid Barajas

7:35 am - 6:17 pmLHR London Heathrow-STL Lambert-St Louis

16h 42m2 stops Madrid Barajas Chicago O'Hare Intl

$845Iberia

Tue, Nov 10 - Wed, Nov 18

12:49 pm - 10:20 amSTL Lambert-St Louis-INV Inverness

15h 31m2 stops Charlotte Douglas London Heathrow

10:25 am - 12:19 amINV Inverness-STL Lambert-St Louis

19h 54m2 stops London Heathrow Chicago O'Hare Intl

$890American Airlines

Fri, Oct 16 - Fri, Oct 23

Cheap last minute flights

Enter your travel dates to find the best prices.

3:30 pm - 10:40 amSTL Lambert-St Louis-LHR London Heathrow

13h 10m1 stop Frankfurt am Main

6:30 am - 1:25 pmLHR London Heathrow-STL Lambert-St Louis

12h 55m1 stop Frankfurt am Main

$960Lufthansa

Wed, Aug 19 - Tue, Aug 25

7:58 pm - 10:00 amSTL Lambert-St Louis-LGW London Gatwick

32h 02m2 stops Denver Intl Orlando

2:00 pm - 3:28 pmLGW London Gatwick-STL Lambert-St Louis

31h 28m1 stop Orlando

$962Multiple Airlines

Fri, Aug 21 - Sun, Aug 30

3:30 pm - 10:40 amSTL Lambert-St Louis-LHR London Heathrow

13h 10m1 stop Frankfurt am Main

6:30 am - 1:25 pmLHR London Heathrow-STL Lambert-St Louis

12h 55m1 stop Frankfurt am Main

$971Lufthansa

Wed, Aug 19 - Tue, Aug 25

12:10 pm - 6:30 amSTL Lambert-St Louis-LHR London Heathrow

12h 20m1 stop Montreal Pierre Elliott Trudeau Intl

6:30 am - 1:25 pmLHR London Heathrow-STL Lambert-St Louis

12h 55m1 stop Frankfurt am Main

$1,000Multiple Airlines

Wed, Aug 19 - Tue, Aug 25

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$1,044British Airways

Wed, Aug 19 - Fri, Aug 28

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$1,044British Airways

Wed, Aug 19 - Tue, Aug 25

9:15 am - 7:15 amSTL Lambert-St Louis-LHR London Heathrow

16h 00m1 stop Atlanta Hartsfield-Jackson

9:55 am - 8:42 pmLHR London Heathrow-STL Lambert-St Louis

16h 47m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$1,047Delta

Wed, Aug 19 - Tue, Aug 25

8:48 am - 7:10 amSTL Lambert-St Louis-LHR London Heathrow

16h 22m2 stops Minneapolis St Paul Detroit Metropolitan Wayne County

9:55 am - 8:42 pmLHR London Heathrow-STL Lambert-St Louis

16h 47m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$1,052Delta

Wed, Aug 19 - Tue, Aug 25

12:10 pm - 6:30 amSTL Lambert-St Louis-LHR London Heathrow

12h 20m1 stop Montreal Pierre Elliott Trudeau Intl

5:55 pm - 8:24 pmLHR London Heathrow-STL Lambert-St Louis

32h 29m2 stops Brussels Bruxelles-National Toronto Pearson Intl

$1,057Air Canada

Wed, Aug 19 - Mon, Aug 24

12:10 pm - 10:00 amSTL Lambert-St Louis-LHR London Heathrow

15h 50m1 stop Montreal Pierre Elliott Trudeau Intl

8:45 am - 6:42 pmLHR London Heathrow-STL Lambert-St Louis

15h 57m2 stops Zurich Montreal Pierre Elliott Trudeau Intl

$1,090Air Canada

Thu, Aug 20 - Thu, Aug 27

Cheap direct flights

Enter your travel dates to find the best prices.

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$987British Airways

Wed, Oct 14 - Wed, Oct 21

9:40 pm - 11:40 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$999British Airways

Sun, Oct 4 - Wed, Oct 21

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$1,012British Airways

Wed, Oct 7 - Wed, Oct 21

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$1,128Iberia

Fri, Oct 16 - Fri, Oct 23

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$1,179American Airlines

Wed, Aug 26 - Wed, Sep 2

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$1,184Iberia

Wed, Oct 7 - Tue, Oct 13

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$1,242Finnair

Fri, Sep 25 - Wed, Sep 30

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$1,254American Airlines

Tue, Oct 13 - Tue, Oct 20

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$1,291Multiple Airlines

Tue, Oct 13 - Tue, Oct 20

9:35 pm - 11:35 amSTL Lambert-St Louis-LHR London Heathrow

8h 00mnonstop

4:25 pm - 7:30 pmLHR London Heathrow-STL Lambert-St Louis

9h 05mnonstop

$1,296Iberia

Wed, Sep 16 - Fri, Oct 16

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KLM flights from St. Louis to United Kingdom

Our best KLM deals on St. Louis to United Kingdom flight tickets

KLM

Dec 1

STL5:37 pmLambert-St Louis

12h 03m

1 stop

LHR11:40 amLondon Heathrow

Dec 8

LHR6:30 amLondon Heathrow

16h 02m

2 stops

STL4:32 pmLambert-St Louis

$862

KLM

Dec 15

STL10:14 amLambert-St Louis

16h 21m

2 stops

BHX8:35 amBirmingham

Jan 19

BHX6:00 amBirmingham

16h 50m

2 stops

STL4:50 pmLambert-St Louis

$939

KLM

Sep 13

STL5:46 pmLambert-St Louis

16h 24m

2 stops

GLA4:10 pmGlasgow Intl

Sep 29

GLA6:00 amGlasgow Intl

19h 58m

2 stops

STL7:58 pmLambert-St Louis

$965

Air Canada flights from St. Louis to United Kingdom

Our best Air Canada deals on St. Louis to United Kingdom flight tickets

Air Canada

Dec 1

STL4:05 pmLambert-St Louis

13h 15m

1 stop

LHR11:20 amLondon Heathrow

Dec 8

LHR6:00 pmLondon Heathrow

27h 26m

1 stop

STL3:26 pmLambert-St Louis

$873

Air Canada

Nov 10

STL4:05 pmLambert-St Louis

10h 25m

1 stop

LHR8:30 amLondon Heathrow

Nov 17

LHR1:00 pmLondon Heathrow

27h 32m

2 stops

STL10:32 amLambert-St Louis

$880

Air Canada

Nov 10

STL10:53 amLambert-St Louis

14h 17m

2 stops

LHR7:10 amLondon Heathrow

Nov 17

LHR3:00 pmLondon Heathrow

27h 10m

2 stops

STL12:10 pmLambert-St Louis

$885

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLondon

STL Lambert-St Louis - LGW London Gatwick

STLLGW

Lambert-St Louis

Fri 10/23

8:34 pm-10:00 am

1 stop31h 26m

London Gatwick

Tue 11/3

10:10 am-9:40 am

2 stops53h 30m

$610

St. LouisLondon

STL Lambert-St Louis - LGW London Gatwick

STLLGW

Lambert-St Louis

Fri 9/25

5:19 pm-10:00 am

1 stop34h 41m

London Gatwick

Wed 9/30

2:00 pm-5:54 pm

1 stop33h 54m

$660

St. LouisLondon

STL Lambert-St Louis - LHR London Heathrow

STLLHR

Lambert-St Louis

Sun 2/7

6:30 am-7:10 am

2 stops18h 40m

London Heathrow

Tue 2/9

6:50 am-3:41 pm

2 stops14h 51m

$751

Quickest round-trip

St. LouisLondon

STL Lambert-St Louis - LHR London Heathrow

STLLHR

Lambert-St Louis

Sun 2/7

1:30 pm-9:40 am

1 stop14h 10m

London Heathrow

Tue 2/9

6:50 am-3:41 pm

2 stops14h 51m

$752

St. LouisLondon

STL Lambert-St Louis - LHR London Heathrow

STLLHR

Lambert-St Louis

Wed 11/11

3:40 pm-2:45 pm

1 stop17h 05m

London Heathrow

Fri 11/13

7:40 am-11:24 pm

2 stops21h 44m

$759

St. LouisLondon

STL Lambert-St Louis - LHR London Heathrow

STLLHR

Lambert-St Louis

Tue 11/10

11:29 am-10:45 am

2 stops17h 16m

London Heathrow

Thu 11/12

7:40 am-10:24 pm

2 stops20h 44m

$764

St. LouisLondon

STL Lambert-St Louis - LHR London Heathrow

STLLHR

Lambert-St Louis

Tue 11/10

11:32 am-8:35 am

1 stop15h 03m

London Heathrow

Wed 11/18

7:35 am-6:17 pm

2 stops16h 42m

$837

St. LouisInverness

STL Lambert-St Louis - INV Inverness

STLINV

Lambert-St Louis

Wed 10/7

1:06 pm-2:55 pm

2 stops19h 49m

Inverness

Wed 10/14

7:35 am-7:18 pm

2 stops17h 43m

$840

St. LouisLondon

STL Lambert-St Louis - LHR London Heathrow

STLLHR

Lambert-St Louis

Tue 11/10

11:32 am-12:05 pm

2 stops18h 33m

London Heathrow

Wed 11/18

7:35 am-6:17 pm

2 stops16h 42m

$845

St. LouisInverness

STL Lambert-St Louis - INV Inverness

STLINV

Lambert-St Louis

Fri 10/16

12:49 pm-10:20 am

2 stops15h 31m

Inverness

Fri 10/23

10:25 am-12:19 am

2 stops19h 54m

$890

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to United Kingdom

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

Prices

Airlines

Delays

Other information

What is the cheapest month to fly to United Kingdom?

In general, October is the cheapest month to fly from St. Louis to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $703. If you aren’t able to travel to United Kingdom during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $740.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from St. Louis to United Kingdom is on a Thursday when prices can be found for as low as $756. The most expensive day to fly to United Kingdom is Friday, with ticket prices averaging around $1,193.

What is the cheapest Lambert-St Louis to United Kingdom flight route?

Fly from Lambert-St Louis to London Heathrow for the best Lambert-St Louis - United Kingdom flight prices

How far in advance should I book a flight from St. Louis to the United Kingdom?

You are more likely to see cheaper flights to United Kingdom from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around $948 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from St. Louis for as low as $844 on momondo.

What cabin class options are available on St. Louis to United Kingdom flights?

There are 3 cabin classes available to choose from on St. Louis to United Kingdom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to United Kingdom flights?

You could potentially save up to 36% on your flight if you consider stops on a St. Louis to United Kingdom flight.

Cheap St. Louis to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to United Kingdom

Best Price Found	$541
Fastest flight time	8h 00m
Direct flights	Mon, Wed, Thu and Sat
Airports in United Kingdom	1,285 airports

The best one-way flight to United Kingdom from St. Louis in the past 72 hours is $541. The best round-trip flight deal from St. Louis to United Kingdom found on momondo in the last 72 hours is $1,016.

The fastest flight from St. Louis to United Kingdom takes 8h 00m

Direct flights go from St. Louis to United Kingdom on Monday, Wednesday, Thursday and Saturday. There are no airlines offering direct flights.

There are 1,285 airports in United Kingdom. From St. Louis there are direct flights to London Heathrow (LHR).

Search flight deals

Frequently asked questions about flying from St. Louis to the United Kingdom

When did momondo last update prices for flights from Lambert-St Louis Airport to United Kingdom?
Prices for flights from Lambert-St Louis Airport to United Kingdom are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to United Kingdom?
There are 9 operators available for flights from Lambert-St Louis Airport to United Kingdom as of August 2026.
How old do you have to be to fly from Lambert-St Louis Airport to United Kingdom?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The necessary travel and health documents for your United Kingdom trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from St. Louis to United Kingdom?
Based on momondo bookings for flights between St. Louis and United Kingdom, the leading plane model is Boeing 787-8 Dreamliner, making up 97.95% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 0.91%, Airbus A330-300 with 0.45%, and Boeing 787 Dreamliner with 0.45%.

Best airlines flying from St. Louis to United Kingdom

Compare and see reviews for airlines that fly from St. Louis to United Kingdom with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $238	Free Cancellation	Rating 7.8 8,502 reviews	Search Delta flights
Virgin Atlantic	PriceFrom $324	Free Cancellation	Rating 7.5 694 reviews	Search Virgin Atlantic flights
Air Canada	PriceFrom $572	Free Cancellation	Rating 7.1 11,479 reviews	Search Air Canada flights
Iberia	PriceFrom $580	Free Cancellation	Rating 7.0 3,257 reviews	Search Iberia flights
United Airlines	PriceFrom $580	Free Cancellation	Rating 7.4 10,104 reviews	Search United Airlines flights
British Airways	PriceFrom $581	Free Cancellation	Rating 6.7 8,167 reviews	Search British Airways flights
American Airlines	PriceFrom $596	Free Cancellation	Rating 7.1 11,951 reviews	Search American Airlines flights
Scandinavian Airlines	PriceFrom $602	Free Cancellation	Rating 7.4 1,953 reviews	Search Scandinavian Airlines flights
Lufthansa	PriceFrom $632	Free Cancellation	Rating 6.8 8,195 reviews	Search Lufthansa flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to United Kingdom. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

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 from St. Louis to United Kingdom.

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

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

An easier way to manage your United Kingdom trip

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Complete your trip

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Popular cities in the United Kingdom

Flights to Londonfrom $387

Flights to Manchesterfrom $571

Flights to Edinburghfrom $529

Flights to Glasgowfrom $552

Flights to Birminghamfrom $549

Flights to Newcastle upon Tynefrom $660

Flights to Belfastfrom $634

Flights to Bristolfrom $726

Flights to Invernessfrom $633

Flights to Aberdeenfrom $719

Flights to Liverpoolfrom $588

Flights to Leedsfrom $610

Cheap flights from St. Louis to the United Kingdom from $230

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to the United Kingdom departing on 10/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

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KLM flights from St. Louis to United Kingdom

Our best KLM deals on St. Louis to United Kingdom flight tickets

Air Canada flights from St. Louis to United Kingdom

Our best Air Canada deals on St. Louis to United Kingdom flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to the United Kingdom that are best for you.

See travel insights to the United Kingdom from

How to get the cheapest flight ticket from St. Louis to United Kingdom

What is the cheapest month to fly to United Kingdom?

What is the cheapest day to depart on your flight to United Kingdom?

What is the cheapest Lambert-St Louis to United Kingdom flight route?

How far in advance should I book a flight from St. Louis to the United Kingdom?

What cabin class options are available on St. Louis to United Kingdom flights?

Can stopping save me money on St. Louis to United Kingdom flights?

What is the cheapest airline that flies from Lambert-St Louis to United Kingdom?

What airlines fly to United Kingdom?

How often are flights from St. Louis to the United Kingdom delayed?

What is the most punctual flight time for St. Louis to the United Kingdom flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on St. Louis to the United Kingdom flights?

How many flights depart from St. Louis to United Kingdom on average per day?

How many flights depart from St. Louis to United Kingdom on average per week?

Cheap St. Louis to United Kingdom flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in United Kingdom

Frequently asked questions about flying from St. Louis to the United Kingdom

Best airlines flying from St. Louis to United Kingdom

Compare and see reviews for airlines that fly from St. Louis to United Kingdom with momondo

Why use momondo?

An easier way to manage your United Kingdom trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

St. Louis flight routes

According to popular flight searches on momondo this year

United Kingdom flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to the United Kingdom

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to the United Kingdom

List of cabin classes available on flights landing in the United Kingdom. Availability may vary depending on flight origin and airline.

Complete your trip to the United Kingdom

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According to popular flight searches on momondo this year