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Cheap flights from Missouri to London Heathrow Airport from £236

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LHR
4 Jun — 11 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Missouri to Heathrow

Enter your travel dates to find the best prices.

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 5 May 2026.

Tue 10/1118:02
JLN
-
LHR
2 stops34h 13m
United Airlines
Fri 13/1106:50
LHR
-
JLN
2 stops22h 29m
United Airlines
Deal found 1/5£576
Tue 4/815:16
MCI
-
LHR
2 stops19h 09m
SWISS
Tue 15/906:00
LHR
-
MCI
2 stops17h 34m
SWISS
Deal found 30/4£620
Tue 29/921:35
STL
-
LHR
Nonstop8h 00m
Iberia
Wed 14/1006:15
LHR
-
STL
2 stops19h 53m
Iberia
Deal found 4/5£634
Tue 10/1110:10
MCI
-
LHR
2 stops23h 50m
Scandinavian Airlines
Fri 20/1106:40
LHR
-
MCI
2 stops23h 18m
Scandinavian Airlines
Deal found 3/5£634
Tue 20/1013:30
STL
-
LHR
2 stops20h 30m
Scandinavian Airlines
Sat 24/1006:40
LHR
-
STL
2 stops22h 59m
Scandinavian Airlines
Deal found 30/4£634
Tue 25/809:59
MCI
-
LHR
2 stops41h 21m
Scandinavian Airlines
Wed 9/917:00
LHR
-
MCI
2 stops36h 52m
Scandinavian Airlines
Deal found 1/5£637
Wed 7/1021:35
STL
-
LHR
Nonstop8h 00m
British Airways
Thu 15/1007:50
LHR
-
STL
2 stops18h 18m
British Airways
Deal found 30/4£639
Tue 6/1016:13
STL
-
LHR
1 stop10h 37m
Delta
Tue 13/1008:40
LHR
-
STL
2 stops17h 57m
Delta
Deal found 30/4£640
Tue 6/1021:35
STL
-
LHR
Nonstop8h 00m
British Airways
Wed 14/1016:25
LHR
-
STL
Nonstop9h 05m
British Airways
Deal found 4/5£641
Tue 29/913:30
STL
-
LHR
1 stop11h 45m
Virgin Atlantic
Tue 6/1009:20
LHR
-
STL
1 stop12h 38m
Virgin Atlantic
Deal found 2/5£642
Mon 9/1109:59
MCI
-
LHR
2 stops24h 01m
Scandinavian Airlines
Mon 16/1106:40
LHR
-
MCI
2 stops23h 18m
Scandinavian Airlines
Deal found 30/4£642
Sun 16/821:40
STL
-
LHR
Nonstop8h 00m
Multiple Airlines
Tue 1/906:30
LHR
-
STL
1 stop12h 55m
Multiple Airlines
Deal found 3/5£642

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 5 May 2026.

Round-trip from

£620

One-way from

£236

Popular in

June

Cheapest in

January

Average price

£740
SWISS
  • SWISS
  • 4/8-15/9
  • 4 total stops
  • 36h 43m total
  • Missouri to London
Search Deals
British Airways
  • British Airways
  • 4/8
  • 1 total stop
  • 12h 15m total
  • Missouri to London
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£162 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 5 May 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 return flight

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 7/10

07:20-06:25

1 stop17h 05m

London Heathrow

Tue 13/10

08:40-20:37

2 stops17h 57m

£640

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 25/8

06:00-06:25

1 stop18h 25m

London Heathrow

Tue 1/9

06:30-18:02

2 stops17h 32m

£640

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 14/10

06:45-07:10

1 stop18h 25m

London Heathrow

Fri 23/10

06:30-17:06

2 stops16h 36m

£640

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 8/9

10:55-07:10

2 stops14h 15m

London Heathrow

Wed 16/9

08:40-20:31

2 stops17h 51m

£643

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 8/9

07:20-07:10

2 stops17h 50m

London Heathrow

Tue 22/9

09:55-20:50

2 stops16h 55m

£644

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 16/9

13:30-10:20

2 stops14h 50m

London Heathrow

Fri 25/9

06:30-16:55

2 stops16h 25m

£644

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 16/9

13:30-10:20

2 stops14h 50m

London Heathrow

Tue 22/9

09:55-20:50

2 stops16h 55m

£644

SpringfieldLondon

SGF - LHR

SGFLHR

Springfield-Branson

Tue 1/9

17:00-11:35

1 stop12h 35m

London Heathrow

Thu 10/9

06:50-18:00

2 stops17h 10m

£648

Kansas CityLondon

MCI - LHR

MCILHR

Kansas City

Tue 4/8

09:55-07:15

1 stop15h 20m

London Heathrow

Tue 15/9

09:55-21:10

2 stops17h 15m

£648

Kansas CityLondon

MCI - LHR

MCILHR

Kansas City

Wed 19/8

10:35-11:20

1 stop18h 45m

London Heathrow

Thu 27/8

06:30-16:42

2 stops16h 12m

£648

Flights are sorted by cheapest return flights first.

Deals found on 2/5

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 return 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

How far ahead should I book a flight from Missouri to London Heathrow Airport?

The price you pay for your flight from Missouri to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, April is the cheapest month in which you can book a flight from Missouri to London Heathrow Airport (average of £86). Flying from Missouri to London Heathrow Airport in June is currently the most expensive (average of £684). 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 5 May 2026.

When flying from Missouri to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Missouri to London Heathrow Airport?

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 12h 35m. The distance from Missouri to London Heathrow Airport is about 4376 mi. This flight may include one or multiple stops.

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

    The most popular route from Missouri to London Heathrow Airport is Lambert-St Louis - London Heathrow. You may also consider Kansas City - London Heathrow or Springfield-Branson - London Heathrow.

  • What are the most reliable airlines from Missouri to London Heathrow Airport?

    The top 3 most reliable airlines when flying from Missouri to London Heathrow Airport are American Airlines (14%), Aer Lingus (14%) and Finnair (14%).

  • 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 holiday 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, April is the cheapest month in which you can book a flight from Missouri to London Heathrow Airport (average of £86). Flying from Missouri to London Heathrow Airport in June is currently the most expensive (average of £684). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Ilford
Slough
Hayes
Brentford
Colchester
Romford
Watford
Kingston upon Thames
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

Browse thousands of different options on Cheapflights for your next trip

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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.
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Top 2 airlines flying from Missouri to Heathrow

Discover the top 2 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 858,174 searches. Data last updated 5 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£405Average£565FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£427Average£620FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Missouri to Heathrow?

Cheapflights helps you search for flights from Missouri to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Missouri to Heathrow?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Missouri.

Can Cheapflights find flights from Missouri to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Missouri shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Missouri to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on Missouri to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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