What is the cheapest airline that flies from Missouri to London Heathrow?

Scandinavian Airlines, British Airways, and Delta are the most popular carriers operating from Missouri to London Heathrow

What airlines fly to London Heathrow Airport?

British Airways, American Airlines and United Airlines are the top three most popular airlines that fly to London Heathrow Airport from Missouri according to our data. British Airways is the first choice among our users, with 42% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 11 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to London Heathrow Airport?

On average, it takes 10h 25m to fly from Missouri to London Heathrow Airport if you fly out of St. Louis (the most popular airport in Missouri) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of Columbia and into London Heathrow Airport, then the flight time is around 10h 26m.

When did momondo last update prices for flights from Missouri to London Heathrow Airport?

Prices for flights from Missouri to London Heathrow Airport were last updated today.

How many operators does momondo search for flights from Missouri to London Heathrow Airport?

As of September 2025, there are 11 operators available to choose from for flights from Missouri to London Heathrow Airport.

How old do you have to be to fly from Missouri to London Heathrow Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents required for your trip to London Heathrow 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 London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$283 Cheap Flights from Missouri to London Heathrow Airport in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Missouri to London

Round-trip

One-way

Last minute

Cheap round-trip flights

10:45 am - 8:50 amSTL-LHR

16h 05m2 stops

6:30 am - 4:46 pmLHR-STL

16h 16m2 stops

$530Delta

Find Deal

Tue, Oct 14 - Wed, Oct 22

4:05 pm - 8:30 amSTL-LHR

10h 25m1 stop

1:00 pm - 3:29 pmLHR-STL

32h 29m1 stop

$531Air Canada

Find Deal

Mon, Jan 19 - Wed, Jan 28

6:30 am - 6:30 amSTL-LHR

18h 00m2 stops

5:50 pm - 3:44 pmLHR-STL

27h 54m2 stops

$536United Airlines

Find Deal

Tue, Oct 14 - Mon, Oct 20

3:19 pm - 11:20 amSTL-LHR

14h 01m2 stops

8:00 am - 7:48 pmLHR-STL

17h 48m2 stops

$543United Airlines

Find Deal

Mon, Dec 8 - Tue, Dec 16

9:15 am - 6:30 amSTL-LHR

15h 15m2 stops

6:50 am - 3:18 pmLHR-STL

14h 28m2 stops

$546Multiple Airlines

Find Deal

Thu, Oct 16 - Thu, Oct 23

9:15 am - 6:35 amSTL-LHR

15h 20m1 stop

6:50 am - 3:18 pmLHR-STL

14h 28m2 stops

$555Multiple Airlines

Find Deal

Thu, Oct 16 - Thu, Oct 23

11:58 am - 6:50 amSTL-LHR

12h 52m1 stop

7:40 pm - 9:57 amLHR-STL

20h 17m2 stops

$561Iberia

Find Deal

Thu, Jan 15 - Mon, Jan 26

11:58 am - 8:15 amSTL-LHR

14h 17m1 stop

7:40 pm - 9:57 amLHR-STL

20h 17m2 stops

$562Iberia

Find Deal

Thu, Jan 15 - Mon, Jan 26

12:25 pm - 10:40 amSTL-LHR

16h 15m2 stops

8:25 pm - 3:44 pmLHR-STL

25h 19m2 stops

$567Lufthansa

Find Deal

Sun, Oct 5 - Mon, Oct 13

6:32 pm - 3:40 pmMCI-LHR

15h 08m2 stops

6:30 am - 3:56 pmLHR-MCI

15h 26m2 stops

$668Lufthansa

Find Deal

Mon, Sep 29 - Wed, Oct 15

Iberia flights from Missouri to London Heathrow Airport

Our best Iberia deals on Missouri to London Heathrow Airport flight tickets

Iberia

Jan 15

STL11:58 amLambert-St Louis

12h 52m

1 stop

LHR6:50 amLondon Heathrow

Jan 26

LHR7:40 pmLondon Heathrow

20h 17m

2 stops

STL9:57 amLambert-St Louis

$561

Find similar

Iberia

Jan 15

STL11:58 amLambert-St Louis

14h 17m

1 stop

LHR8:15 amLondon Heathrow

Jan 26

LHR7:40 pmLondon Heathrow

20h 17m

2 stops

STL9:57 amLambert-St Louis

$562

Find similar

Iberia

Nov 17

STL2:50 pmLambert-St Louis

10h 10m

1 stop

LHR7:00 amLondon Heathrow

Nov 23

LHR3:00 pmLondon Heathrow

13h 34m

1 stop

STL10:34 pmLambert-St Louis

$577

Find similar

British Airways flights from Missouri to London Heathrow Airport

Our best British Airways deals on Missouri to London Heathrow Airport flight tickets

British Airways

Nov 17

STL2:05 pmLambert-St Louis

11h 15m

1 stop

LHR7:20 amLondon Heathrow

Nov 23

LHR9:55 amLondon Heathrow

15h 34m

1 stop

STL7:29 pmLambert-St Louis

$576

Find similar

British Airways

Sep 24

STL2:11 pmLambert-St Louis

11h 29m

1 stop

LHR7:40 amLondon Heathrow

Sep 28

LHR9:15 amLondon Heathrow

12h 31m

1 stop

STL3:46 pmLambert-St Louis

$577

Find similar

British Airways

Sep 23

STL12:28 pmLambert-St Louis

11h 57m

1 stop

LHR6:25 amLondon Heathrow

Sep 28

LHR9:15 amLondon Heathrow

20h 38m

1 stop

STL11:53 pmLambert-St Louis

$605

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Missouri to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 10/14

10:45 am-8:50 am

2 stops16h 05m

London Heathrow

Wed 10/22

6:30 am-4:46 pm

2 stops16h 16m

$530

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 1/19

4:05 pm-8:30 am

1 stop10h 25m

London Heathrow

Wed 1/28

1:00 pm-3:29 pm

1 stop32h 29m

$531

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 10/14

6:30 am-6:30 am

2 stops18h 00m

London Heathrow

Mon 10/20

5:50 pm-3:44 pm

2 stops27h 54m

$536

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 12/8

3:19 pm-11:20 am

2 stops14h 01m

London Heathrow

Tue 12/16

8:00 am-7:48 pm

2 stops17h 48m

$543

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 10/16

9:15 am-6:30 am

2 stops15h 15m

London Heathrow

Thu 10/23

6:50 am-3:18 pm

2 stops14h 28m

$546

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 10/16

9:15 am-6:35 am

1 stop15h 20m

London Heathrow

Thu 10/23

6:50 am-3:18 pm

2 stops14h 28m

$555

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 1/15

11:58 am-6:50 am

1 stop12h 52m

London Heathrow

Mon 1/26

7:40 pm-9:57 am

2 stops20h 17m

$561

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 1/15

11:58 am-8:15 am

1 stop14h 17m

London Heathrow

Mon 1/26

7:40 pm-9:57 am

2 stops20h 17m

$562

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sun 10/5

12:25 pm-10:40 am

2 stops16h 15m

London Heathrow

Mon 10/13

8:25 pm-3:44 pm

2 stops25h 19m

$567

Kansas CityLondon

MCI - LHR

MCILHR

Kansas City

Mon 9/29

6:32 pm-3:40 pm

2 stops15h 08m

London Heathrow

Wed 10/15

6:30 am-3:56 pm

2 stops15h 26m

$668

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 Missouri to London Heathrow Airport

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

Other information

What is the cheapest month to fly to London Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Missouri, with most prices found around $739. If you’re not able to fly to London Heathrow Airport in October, then September is your next best option. Flight prices from Missouri to London Heathrow Airport during September average around $779.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Thursday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $906. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $1,015.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Missouri to London Heathrow Airport in the evening for as low as $895. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $996.

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $920 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Missouri for as low as $751 on momondo.

Can stopping save me money on Missouri to London Heathrow Airport flights?

You could potentially save up to 9% on your flight if you consider stops on a Missouri to London Heathrow Airport flight.

Cheap Missouri to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to London Heathrow Airport

Direct flights	None

There are no direct flights from Missouri to London Heathrow Airport. There are no popular flight routes from Missouri to London Heathrow Airport.

Search flight deals

When did momondo last update prices for flights from Missouri to London Heathrow Airport?
Prices for flights from Missouri to London Heathrow Airport were last updated today.
How many operators does momondo search for flights from Missouri to London Heathrow Airport?
As of September 2025, there are 11 operators available to choose from for flights from Missouri to London Heathrow Airport.
How old do you have to be to fly from Missouri to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents required for your trip to London Heathrow 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 London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Missouri to London Heathrow Airport

Compare and see reviews for airlines that fly from Missouri to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom $530	Free Cancellation	Rating 7.8 1,386 reviews	Search KLM flights
United Airlines	PriceFrom $580	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
British Airways	PriceFrom $590	Free Cancellation	Rating 6.7 7,373 reviews	Search British Airways flights
Finnair	PriceFrom $599	Free Cancellation	Rating 7.6 1,324 reviews	Search Finnair flights
Virgin Atlantic	PriceFrom $620	Free Cancellation	Rating 7.4 664 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $631	Free Cancellation	Rating 7.9 7,964 reviews	Search Delta flights
Air Canada	PriceFrom $634	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
American Airlines	PriceFrom $637	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Iberia	PriceFrom $658	Free Cancellation	Rating 7.0 2,926 reviews	Search Iberia flights
Scandinavian Airlines	PriceFrom $669	Free Cancellation	Rating 7.4 1,487 reviews	Search Scandinavian Airlines flights

Gatwick

Hounslow

Dover

Luton

Slough

Milton Keynes

Hayes

Guildford

Dartford

Crawley

Stansted

Chelmsford

Salisbury

Brentwood

Ilford

Folkestone

Colchester

Swindon

Stratford-upon-Avon

Watford

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Missouri.

Can I find flights from Missouri to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Missouri with this policy.

How can momondo help me find flights from Missouri to London?

momondo helps you find the best flight between Missouri and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Missouri to London 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 London Heathrow Airport 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Sun 10/19

Sun 10/26

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Flights to London Gatwick Airportfrom $349

Flights to London City Airportfrom $452

Flights to London Stansted Airportfrom $401

Flights to London Luton Airportfrom $404

Flights to Glasgow Intl Airportfrom $374

Flights to Belfast Intl Airportfrom $464

Flights to London Southend Airportfrom $486

Flights to Belfast City Airportfrom $514

Cheap flights from Missouri to London from $283

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to London departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Missouri to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Iberia flights from Missouri to London Heathrow Airport

Our best Iberia deals on Missouri to London Heathrow Airport flight tickets

British Airways flights from Missouri to London Heathrow Airport

Our best British Airways deals on Missouri to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Missouri to London Heathrow Airport that are best for you.

See travel insights to London from

How to get the cheapest flight ticket from Missouri to London Heathrow Airport

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 month to fly to London Heathrow Airport?

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Thursday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $906. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $1,015.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

How far in advance should I book a flight to London Heathrow Airport?

Can stopping save me money on Missouri to London Heathrow Airport flights?

You could potentially save up to 9% on your flight if you consider stops on a Missouri to London Heathrow Airport flight.

What is the cheapest airline that flies from Missouri to London Heathrow?

Scandinavian Airlines, British Airways, and Delta are the most popular carriers operating from Missouri to London Heathrow

What airlines fly to London Heathrow Airport?

How long does it take to fly to London Heathrow Airport?

Cheap Missouri to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to London Heathrow Airport

Direct flights

When did momondo last update prices for flights from Missouri to London Heathrow Airport?

How many operators does momondo search for flights from Missouri to London Heathrow Airport?

How old do you have to be to fly from Missouri to London Heathrow Airport?

What documentation or ID do you need to fly to London Heathrow Airport?

Best airlines flying from Missouri to London Heathrow Airport

Compare and see reviews for airlines that fly from Missouri to London Heathrow Airport with momondo

Traveling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to London?

Can I find flights from Missouri to London with flexible booking policies on momondo?

How can momondo help me find flights from Missouri to London?

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

An easier way to manage your London Heathrow Airport 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 London

Popular cities in the United Kingdom

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