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$320+ Cheap flights from Missouri to London (LON)

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LON
Jun 4 — Jun 111
Thu 6/4
Thu 6/11
1 adult, Economy
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Cheap flight deals from Missouri to London

Cheapest flights from Missouri to London
Explore the most affordable flight options available from Missouri to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 5, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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.
Wed 8/197:45 am
MCI
-
LHR
2 stops18h 10m
SWISS
Thu 8/278:45 am
LHR
-
MCI
2 stops18h 55m
SWISS
Deal found 4/30$840
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:08 pm
STL
-
LGW
2 stops31h 52m
Multiple Airlines
Tue 9/12:00 pm
LGW
-
STL
1 stop16h 14m
Multiple Airlines
Deal found 5/3$853
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/274:52 pm
STL
-
LGW
2 stops35h 08m
Multiple Airlines
Wed 8/192:00 pm
LGW
-
STL
1 stop16h 14m
Multiple Airlines
Deal found 5/4$854
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:52 pm
STL
-
LGW
2 stops35h 08m
Multiple Airlines
Tue 8/182:00 pm
LGW
-
STL
1 stop16h 14m
Multiple Airlines
Deal found 5/4$858
This Orbitz deal was found by Cheapflights users on 5/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:35 pm
STL
-
LHR
Nonstop8h 00m
Iberia
Tue 10/206:15 am
LHR
-
STL
2 stops19h 53m
Iberia
Deal found 5/1$859
This FlightHub deal was found by Cheapflights users on 5/3. 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.
Tue 11/1010:10 am
MCI
-
LHR
2 stops23h 50m
Scandinavian Airlines
Fri 11/206:40 am
LHR
-
MCI
2 stops23h 18m
Scandinavian Airlines
Deal found 5/3$860
This The Travel House deal was found by Cheapflights users on 4/30. 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.
Tue 10/201:30 pm
STL
-
LHR
2 stops20h 30m
Scandinavian Airlines
Sat 10/246:40 am
LHR
-
STL
2 stops22h 59m
Scandinavian Airlines
Deal found 4/30$860
This The Travel House deal was found by Cheapflights users on 5/1. 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.
Tue 8/259:59 am
MCI
-
LHR
2 stops41h 21m
Scandinavian Airlines
Wed 9/95:00 pm
LHR
-
MCI
2 stops36h 52m
Scandinavian Airlines
Deal found 5/1$863
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:09 pm
STL
-
LGW
1 stop35h 51m
Multiple Airlines
Wed 8/192:00 pm
LGW
-
STL
1 stop16h 14m
Multiple Airlines
Deal found 5/4$864
This oojo deal was found by Cheapflights users on 4/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:35 pm
STL
-
LHR
Nonstop8h 00m
British Airways
Thu 10/157:50 am
LHR
-
STL
2 stops18h 18m
British Airways
Deal found 4/30$866
This Delta deal was found by Cheapflights users on 4/30. 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.
Wed 9/21:30 pm
STL
-
LHR
1 stop10h 55m
Delta
Tue 9/89:55 am
LHR
-
STL
2 stops16h 36m
Delta
Deal found 4/30$868
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 10/69:35 pm
STL
-
LHR
Nonstop8h 00m
British Airways
Tue 10/134:25 pm
LHR
-
STL
Nonstop9h 05m
British Airways
Deal found 4/30$869

Find flight deals from Missouri to London

Keep the following information in mind while searching for Missouri to London flight deals. Data was last updated May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$837
(Kiwi.com)

One-way from

$320
(Cheapflightsfares)

Popular in

June

Cheapest in

January

Average price

$1,003

Good round-trip deal

$1,067 or less

Good one-way deal

$514 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 (LON)
Search Deals
One-way flight from Missouri to London (LON)
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($298 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Missouri to London (LON).
Search Deals
Price to beat on a one-way flight from Missouri to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to London 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 May 5, 2026.
Use the filters below to find and compare flights from Missouri to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 9/16

1:30 pm-1:15 pm

1 stop17h 45m

London Heathrow

Fri 9/25

6:30 am-4:55 pm

2 stops16h 25m

$868

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 10/7

7:20 am-6:25 am

1 stop17h 05m

London Heathrow

Tue 10/13

8:40 am-8:37 pm

2 stops17h 57m

$868

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 10/21

9:00 am-7:15 am

1 stop16h 15m

London Heathrow

Fri 10/30

6:30 am-6:01 pm

2 stops16h 31m

$869

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 8/11

11:00 am-7:55 am

2 stops14h 55m

London Heathrow

Fri 8/21

6:30 am-4:17 pm

2 stops15h 47m

$873

SpringfieldLondon

SGF - LHR

SGFLHR

Springfield-Branson

Wed 10/21

11:40 am-7:10 am

2 stops13h 30m

London Heathrow

Fri 10/30

6:30 am-10:32 pm

2 stops21h 02m

$883

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Wed 9/2

1:30 pm-8:50 am

2 stops13h 20m

London City

Fri 9/11

10:00 am-8:50 pm

2 stops16h 50m

$897

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Wed 9/2

1:30 pm-8:50 am

2 stops13h 20m

London City

Tue 9/8

10:00 am-8:50 pm

2 stops16h 50m

$897

SpringfieldLondon

SGF - LHR

SGFLHR

Springfield-Branson

Tue 9/1

5:00 pm-11:35 am

1 stop12h 35m

London Heathrow

Sun 9/6

10:00 am-6:41 pm

1 stop14h 41m

$957

SpringfieldLondon

SGF - LHR

SGFLHR

Springfield-Branson

Sat 8/29

11:19 am-9:40 am

1 stop16h 21m

London Heathrow

Thu 9/10

2:10 pm-12:56 am

1 stop16h 46m

$1,000

SpringfieldLondon

SGF - LHR

SGFLHR

Springfield-Branson

Mon 8/31

6:00 am-6:25 am

1 stop18h 25m

London Heathrow

Wed 9/9

10:55 am-10:29 pm

2 stops17h 34m

$1,020

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/2

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Missouri to London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

The best time to book flights from Missouri to London is 72 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, April is the cheapest month in which you can book a flight from Missouri to London (average of $117). Flying from Missouri to London in May is currently the most expensive (average of $1,961). 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 LON?

Find hourly flight availability from Missouri to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 5, 2026.

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

How much does it cost to fly round-trip from Missouri to London?

Related info for your journey

Find useful and relevant information for your journey from Missouri to London. 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?

    Airlines like Delta, United Airlines, and KLM fly from Missouri to London in about 12h 35m. The time it takes to get you to your destination can typically vary by up to 5h 50m. The distance from Missouri to London is about 4376 mi. This flight may include one or multiple stops.

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

    $224 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Delta, with prices starting from $284 and $284, respectively.

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

    The most popular flight routes from Missouri to London are Lambert-St Louis - London Heathrow, Kansas City - London Heathrow and Lambert-St Louis - London Gatwick.

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

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

  • What are the cheapest flights from Missouri to London?

    On average you can expect to pay $1,587 for a flight from Missouri to London. The cheapest flight overall is $388 while the most popular route, (Lambert-St Louis - London Heathrow) is currently priced at $840.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Missouri to London 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?

    Currently, April is the cheapest month in which you can book a flight from Missouri to London (average of $117). Flying from Missouri to London in May is currently the most expensive (average of $1,961). 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?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Borehamwood
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
Sutton
Stansted

Browse thousands of different options on Cheapflights for your next trip

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Top 9 airlines flying from Missouri to London

Discover the top 9 airlines that operate flights from Missouri to London. 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 May 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$483Average$928FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$529Average$696FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$533Average$914FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$563Average$923FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$572Average$863FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$574Average$830FlexibilityNo cancel feeOn-time70%
IberiaCheapest$577Average$900FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$580Average$932FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$629Average$834FlexibilityNo cancel feeOn-time72%

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