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$275+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LHR
Apr 16 — Apr 231
Thu 4/16
Thu 4/23
1 adult, Economy
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Cheap 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 March 17, 2026.

This United Airlines deal was found by Cheapflights users on 3/12. 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 12/26:00 am
SGF
-
LHR
1 stop17h 55m
United Airlines
Thu 12/311:05 am
LHR
-
SGF
2 stops43h 52m
United Airlines
Deal found 3/12$635
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Mon 11/96:02 pm
JLN
-
LHR
2 stops56h 28m
United Airlines
Fri 11/136:50 am
LHR
-
JLN
2 stops22h 29m
United Airlines
Deal found 3/12$690
This Gotogate deal was found by Cheapflights users on 3/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/31:00 pm
STL
-
LHR
1 stop15h 00m
Air Canada
Tue 5/126:50 am
LHR
-
STL
2 stops19h 35m
Air Canada
Deal found 3/16$720
This Mytrip deal was found by Cheapflights users on 3/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:10 pm
STL
-
LHR
1 stop15h 50m
Multiple Airlines
Wed 10/146:30 am
LHR
-
STL
1 stop12h 55m
Multiple Airlines
Deal found 3/12$723
This The Travel House deal was found by Cheapflights users on 3/15. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/213:36 pm
MCI
-
LHR
2 stops35h 44m
Scandinavian Airlines
Mon 10/57:30 pm
LHR
-
MCI
2 stops33h 30m
Scandinavian Airlines
Deal found 3/15$732
This Finnair deal was found by Cheapflights users on 3/12. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:27 pm
STL
-
LHR
1 stop13h 28m
Finnair
Wed 4/224:25 pm
LHR
-
STL
Nonstop9h 05m
Finnair
Deal found 3/12$737
This Gotogate deal was found by Cheapflights users on 3/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:05 pm
STL
-
LHR
1 stop13h 45m
Air Canada
Wed 5/68:40 am
LHR
-
STL
2 stops17h 45m
Air Canada
Deal found 3/15$738
This Gotogate deal was found by Cheapflights users on 3/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:05 pm
STL
-
LHR
1 stop13h 45m
Air Canada
Tue 5/55:15 pm
LHR
-
STL
2 stops33h 10m
Air Canada
Deal found 3/14$739
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:49 pm
STL
-
LHR
2 stops17h 36m
Lufthansa
Fri 10/166:30 am
LHR
-
STL
1 stop12h 55m
Lufthansa
Deal found 3/15$740
This Cheapflightsfares deal was found by Cheapflights users on 3/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:09 pm
STL
-
LHR
2 stops17h 16m
Lufthansa
Tue 5/199:00 am
LHR
-
STL
2 stops18h 13m
Lufthansa
Deal found 3/12$741
This FlightHub deal was found by Cheapflights users on 3/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/53:42 pm
STL
-
LHR
2 stops19h 58m
Scandinavian Airlines
Sat 10/246:40 am
LHR
-
STL
2 stops22h 59m
Scandinavian Airlines
Deal found 3/15$744
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:30 pm
STL
-
LHR
1 stop17h 10m
Lufthansa
Fri 10/166:30 am
LHR
-
STL
1 stop12h 55m
Lufthansa
Deal found 3/15$746

Find flight deals from Missouri to Heathrow

Keep the following information in mind while searching for Missouri to Heathrow flight deals. Data was last updated March 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$720
(Gotogate)

One-way from

$275
(TravelUp)

Popular in

June

Cheapest in

January

Average price

$753

Good round-trip deal

$864 or less

Good one-way deal

$535 or less
Provider with most accurate pricing for Lambert-St Louis-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-London (LON) flights.
Search Deals
From Missouri to London Heathrow
Search Deals
One-way flight from Missouri to London Heathrow
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($299 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Missouri to London Heathrow.
Search Deals
Price to beat on a one-way flight from Missouri to London Heathrow.
Search Deals

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 March 17, 2026.
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

Cheapest round-trip

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 4/28

6:15 am-10:00 am

2 stops21h 45m

London Heathrow

Tue 5/5

6:50 am-4:39 pm

2 stops15h 49m

$772

ColumbiaLondon

COU - LHR

COULHR

Columbia Regional

Tue 4/28

11:30 am-6:45 am

1 stop13h 15m

London Heathrow

Tue 5/5

6:50 am-10:03 pm

2 stops21h 13m

$773

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 4/13

9:59 am-6:25 am

1 stop14h 26m

London Heathrow

Tue 4/28

6:30 am-5:44 pm

2 stops17h 14m

$774

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 3/30

12:04 pm-1:15 pm

1 stop19h 11m

London Heathrow

Tue 4/14

11:45 am-11:36 pm

2 stops17h 51m

$774

Kansas CityLondon

MCI - LHR

MCILHR

Kansas City

Mon 8/17

6:36 pm-11:55 am

1 stop11h 19m

London Heathrow

Wed 8/26

6:50 am-3:52 pm

2 stops15h 02m

$775

Kansas CityLondon

MCI - LHR

MCILHR

Kansas City

Wed 8/19

5:22 pm-12:20 pm

1 stop12h 58m

London Heathrow

Wed 9/2

6:50 am-3:52 pm

2 stops15h 02m

$775

ColumbiaLondon

COU - LHR

COULHR

Columbia Regional

Tue 4/21

8:00 am-9:00 am

1 stop19h 00m

London Heathrow

Thu 4/30

7:30 am-10:03 pm

2 stops20h 33m

$786

ColumbiaLondon

COU - LHR

COULHR

Columbia Regional

Mon 4/27

8:00 am-8:30 am

1 stop18h 30m

London Heathrow

Mon 5/4

5:50 pm-10:03 pm

2 stops34h 13m

$787

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 4/13

6:05 pm-9:40 am

1 stop33h 35m

London Heathrow

Tue 4/28

5:40 pm-3:25 pm

1 stop27h 45m

$788

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 5/5

4:44 pm-7:40 am

1 stop32h 56m

London Heathrow

Tue 5/19

5:40 pm-8:04 pm

1 stop32h 24m

$788

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Missouri to London Heathrow Airport (average of $526). Flying from Missouri to London Heathrow Airport in June is currently the most expensive (average of $1,021). 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.

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 13h 37m. The distance from Missouri to London Heathrow Airport is about 4376 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 $224 on American Airlines. Other airlines that offer cheap prices include Delta from $254 and United Airlines from $284 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.

  • What are the cheapest flights from Missouri to London Heathrow Airport?

    Looking for the cheapest flight from Missouri to London Heathrow Airport? While on average our users pay $1,562, our data indicates the cheapest price to be $287. The most popular route (Lambert-St Louis - London Heathrow), is priced around $740.

  • 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, February is the cheapest month in which you can book a flight from Missouri to London Heathrow Airport (average of $526). Flying from Missouri to London Heathrow Airport in June is currently the most expensive (average of $1,021). 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
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Borehamwood
Broadway
Aylesbury
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 9 airlines flying from Missouri to Heathrow

Discover the top 9 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 March 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$529Average$705FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$533Average$871FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$538Average$835FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$563Average$1,014FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$572Average$932FlexibilityNo cancel feeOn-time67%
DeltaCheapest$577Average$928FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$580Average$936FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$580Average$910FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$620Average$710FlexibilityNo cancel feeOn-time72%

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