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$272+ Cheap flights from Missouri to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LHR
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Missouri to Heathrow

Keep the following information in mind while searching for Missouri to Heathrow flight deals. Data was last updated September 11, 2025.

Round-trip from

$528
(United Airlines)

One-way from

$272
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$789
From Missouri to London Heathrow
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One-way flight from Missouri to London Heathrow
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Highest demand for flights based on searches. 17% potential increase in price ($193 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Missouri to Heathrow

Cheapest flights from Missouri to Heathrow
Explore the most affordable flight options available from Missouri to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:43 pmSTL - LHR
1 stop10h 32mUnited Airlines
Tue 11/186:00 pmLHR - STL
1 stop27h 29mUnited Airlines
Deal found 9/11$528
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:49 amSTL - LHR
1 stop12h 31mUnited Airlines
Fri 12/56:30 amLHR - STL
1 stop13h 25mUnited Airlines
Deal found 9/11$529
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/114:05 pmSTL - LHR
2 stops33h 05mAir Canada
Tue 11/181:25 pmLHR - STL
2 stops32h 04mAir Canada
Deal found 9/9$530
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:05 pmSTL - LHR
2 stops22h 30mUnited Airlines
Fri 12/197:40 amLHR - STL
1 stop17h 58mUnited Airlines
Deal found 9/10$534
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/211:30 pmSTL - LHR
2 stops14h 45mAir Canada
Tue 10/76:50 amLHR - STL
2 stops14h 28mAir Canada
Deal found 9/10$541
This Netflights deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:52 pmSTL - LHR
1 stop12h 38mVirgin Atlantic
Tue 11/48:55 amLHR - STL
1 stop15h 07mVirgin Atlantic
Deal found 9/9$548
This Ovago deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:36 pmSTL - LHR
1 stop29h 19mBritish Airways
Fri 12/1912:35 pmLHR - STL
1 stop12h 56mBritish Airways
Deal found 9/10$550
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/211:30 pmSTL - LHR
2 stops14h 45mAir Canada
Wed 10/19:30 amLHR - STL
2 stops16h 08mAir Canada
Deal found 9/10$551
This Flightnetwork deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/249:15 amSTL - LHR
2 stops15h 15mAir Canada
Fri 10/316:00 pmLHR - STL
1 stop26h 29mAir Canada
Deal found 9/9$553
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:33 amMCI - LHR
2 stops16h 02mUnited Airlines
Tue 10/76:50 amLHR - MCI
2 stops15h 06mUnited Airlines
Deal found 9/8$619
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:46 pmMCI - LHR
1 stop16h 34mUnited Airlines
Thu 10/236:50 amLHR - MCI
2 stops15h 06mUnited Airlines
Deal found 9/9$620
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/225:26 pmMCI - LHR
1 stop14h 04mDelta
Fri 10/318:55 amLHR - MCI
2 stops19h 56mDelta
Deal found 9/8$621

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Heathrow 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Missouri to London Heathrow Airport that are best for you.

Fly from

Missouri

Fly to

Heathrow

Route

Depart

Return

Price

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 11/11

6:43 pm-11:15 am

1 stop10h 32m

London Heathrow

Tue 11/18

6:00 pm-3:29 pm

1 stop27h 29m

$528

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

9:55 am-10:04 pm

2 stops18h 09m

$528

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Fri 11/7

4:05 pm-8:35 pm

2 stops46h 30m

London Heathrow

Wed 11/19

6:00 pm-3:29 pm

1 stop27h 29m

$529

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 11/19

11:49 am-6:20 am

1 stop12h 31m

London Heathrow

Fri 12/5

6:30 am-1:55 pm

1 stop13h 25m

$529

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 10/16

11:10 am-11:45 am

1 stop18h 35m

London Heathrow

Fri 10/24

8:40 am-7:42 pm

2 stops17h 02m

$563

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Fri 11/7

5:24 pm-5:55 am

1 stop30h 31m

London Heathrow

Wed 11/19

11:10 am-3:29 pm

1 stop34h 19m

$565

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sun 10/26

6:43 pm-5:55 am

1 stop30h 12m

London Heathrow

Sun 11/2

11:10 am-3:29 pm

1 stop34h 19m

$566

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Fri 10/17

5:15 am-12:20 pm

1 stop25h 05m

London Heathrow

Tue 10/21

5:40 pm-3:18 pm

1 stop27h 38m

$567

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 9/29

5:15 am-12:20 pm

1 stop25h 05m

London Heathrow

Mon 10/6

5:40 pm-7:38 pm

1 stop31h 58m

$567

SpringfieldLondon

SGF - LHR

SGFLHR

Springfield-Branson

Fri 1/16

11:45 am-9:20 am

2 stops39h 35m

London Heathrow

Mon 2/2

6:40 am-9:41 pm

2 stops21h 01m

$616

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 57 results
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Best time to book a flight from Missouri to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to London Heathrow Airport

What is the cheapest month to book a flight from Missouri to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Missouri to London Heathrow Airport (average of $661). Flying from Missouri to London Heathrow Airport in June is currently the most expensive (average of $1,098). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MO to LHR?

Find hourly flight availability from Missouri to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to London Heathrow Airport as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Missouri to London Heathrow Airport?

    Departing from Missouri to London Heathrow Airport will take you 10h 32m. The distance from Missouri to London Heathrow Airport is about 4186 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Missouri to London Heathrow Airport one-way?

    One-way options have recently been found by users for as low as $438 on Virgin Atlantic. Other airlines that offer cheap prices include Lufthansa from $445 and American Airlines from $459 one-way.

  • What are the most popular routes from Missouri to London Heathrow Airport?

    When deciding which route to take from Missouri to London Heathrow Airport consider Lambert-St Louis - London Heathrow, Kansas City - London Heathrow or Springfield-Branson - London Heathrow as they are the most popular.

  • Can I find deals for flights from Missouri to Heathrow that include hotel bookings?

    Yes. In addition to deals on Missouri to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Heathrow.

  • Can I find deals for business class flights from Missouri to Heathrow?

    Yes. Cheapflights offers flight deals from Missouri to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Missouri to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Missouri to London Heathrow Airport (average of $661). Flying from Missouri to London Heathrow Airport in June is currently the most expensive (average of $1,098). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Wembley
Folkestone

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Alternative routes for Missouri to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
Boston to Heathrow flights
Los Angeles to Heathrow flights
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John F Kennedy Intl to London City flights
Newark to Gatwick flights
John F Kennedy Intl to Gatwick flights
O'Hare Intl to Heathrow flights
San Francisco to Heathrow flights
Baltimore to Heathrow flights
Dallas/Fort Worth to Heathrow flights
LaGuardia to Gatwick flights
Newark to London City flights
Seattle to Heathrow flights
Hobby to Heathrow flights
John F Kennedy Intl to Stansted flights
John F Kennedy Intl to Luton flights
Boston to Gatwick flights
Reagan-National to Heathrow flights
Atlanta to Heathrow flights
Miami to Heathrow flights
Philadelphia to Heathrow flights
Boston to London City flights
Denver to Heathrow flights
Dulles Intl to Gatwick flights
Orlando to Heathrow flights
Newark to Stansted flights
Newark to Luton flights
Dulles Intl to London City flights
Baltimore to Gatwick flights
Los Angeles to London City flights
George Bush Intcntl to Heathrow flights
Reagan-National to Gatwick flights
O'Hare Intl to Gatwick flights
San Francisco to Gatwick flights
Los Angeles to Gatwick flights
O'Hare Intl to London City flights
Dallas/Fort Worth to Gatwick flights
Austin to Heathrow flights
LaGuardia to London City flights
San Francisco to London City flights
Minneapolis to Heathrow flights
Seattle to Gatwick flights
Orlando to Gatwick flights
Boston to Stansted flights
Raleigh to Heathrow flights
Dulles Intl to Stansted flights
Boston to Luton flights

Top 10 airlines flying from Missouri to Heathrow

Discover the top 10 airlines that operate flights from Missouri to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$530Average$791FlexibilityNo cancel feeOn-time75%
FinnairCheapest$599Average$813FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$620Average$875FlexibilityNo cancel feeOn-time72%
DeltaCheapest$631Average$957FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$631Average$952FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$638Average$1,080FlexibilityNo cancel feeOn-time71%
IberiaCheapest$658Average$955FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$669Average$1,102FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$669Average$934FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$670Average$888FlexibilityNo cancel feeOn-time76%

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