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$287+ 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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LON
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
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 March 24, 2026.

This United Airlines deal was found by Cheapflights users on 3/23. 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 11/168:00 am
SGF
-
LHR
1 stop21h 15m
United Airlines
Wed 11/186:50 am
LHR
-
SGF
2 stops16h 29m
United Airlines
Deal found 3/23$684
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Sun 11/86:15 pm
SGF
-
LHR
1 stop31h 40m
United Airlines
Wed 11/116:50 am
LHR
-
SGF
2 stops16h 29m
United Airlines
Deal found 3/19$690
This United Airlines deal was found by Cheapflights users on 3/23. 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 11/105:05 pm
MCI
-
LHR
2 stops32h 20m
United Airlines
Fri 11/136:50 am
LHR
-
MCI
2 stops15h 34m
United Airlines
Deal found 3/23$707
This Ticket deal was found by Cheapflights users on 3/21. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/31:46 pm
STL
-
LHR
1 stop11h 24m
Virgin Atlantic
Tue 5/128:40 am
LHR
-
STL
2 stops20h 41m
Virgin Atlantic
Deal found 3/21$779
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
Fri 5/89:18 pm
STL
-
LGW
2 stops30h 42m
Multiple Airlines
Fri 5/152:00 pm
LGW
-
STL
1 stop16h 21m
Multiple Airlines
Deal found 3/23$781
This Cheapflightsfares deal was found by Cheapflights users on 3/22. 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 4/286:55 pm
STL
-
LHR
2 stops17h 30m
Lufthansa
Wed 5/610:50 am
LHR
-
STL
2 stops17h 55m
Lufthansa
Deal found 3/22$785
This Cheapflightsfares deal was found by Cheapflights users on 3/23. 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 stops14h 51m
Lufthansa
Fri 10/166:30 am
LHR
-
STL
1 stop12h 55m
Lufthansa
Deal found 3/23$786
This Cheapflightsfares deal was found by Cheapflights users on 3/19. 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 8/186:36 pm
MCI
-
LHR
2 stops19h 04m
Lufthansa
Tue 9/110:50 am
LHR
-
MCI
2 stops16h 50m
Lufthansa
Deal found 3/19$787
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 4/264:59 pm
STL
-
LGW
1 stop35h 01m
Multiple Airlines
Sun 5/32:00 pm
LGW
-
STL
2 stops22h 50m
Multiple Airlines
Deal found 3/24$789
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 3/238:12 pm
STL
-
LGW
2 stops32h 48m
Multiple Airlines
Wed 4/152:00 pm
LGW
-
STL
1 stop15h 19m
Multiple Airlines
Deal found 3/19$790
This Cheapflightsfares deal was found by Cheapflights users on 3/23. 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
Tue 10/136:30 am
LHR
-
STL
1 stop12h 55m
Lufthansa
Deal found 3/23$791
This Cheapflightsfares deal was found by Cheapflights users on 3/19. 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 8/253:14 pm
MCI
-
LHR
2 stops19h 11m
SWISS
Tue 9/18:45 am
LHR
-
MCI
2 stops18h 55m
SWISS
Deal found 3/19$792

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 March 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$779
(Ticket)

One-way from

$287
(Expedia)

Popular in

June

Cheapest in

January

Average price

$753

Good round-trip deal

$883 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 (LON)
Search Deals
One-way flight from Missouri to London (LON)
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 (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 March 24, 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 8/26

11:25 am-6:55 am

2 stops13h 30m

London Heathrow

Tue 9/8

7:25 am-5:30 pm

2 stops16h 05m

$828

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 5/5

4:06 pm-9:40 am

1 stop35h 34m

London Heathrow

Tue 5/19

12:05 pm-12:06 pm

1 stop30h 01m

$838

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 9/1

12:10 pm-6:30 am

1 stop12h 20m

London Heathrow

Wed 9/9

9:30 am-6:41 pm

1 stop15h 11m

$844
Quickest round-trip

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 4/14

5:24 pm-10:25 am

1 stop11h 01m

London Heathrow

Tue 5/5

2:05 pm-8:25 pm

1 stop12h 20m

$845

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 4/23

11:42 am-7:10 am

2 stops13h 28m

London Heathrow

Tue 4/28

6:30 am-2:29 pm

2 stops13h 59m

$877

SpringfieldLondon

SGF - LHR

SGFLHR

Springfield-Branson

Tue 4/21

6:05 am-7:15 am

1 stop19h 10m

London Heathrow

Wed 5/13

6:30 am-10:27 pm

2 stops21h 57m

$885

SpringfieldLondon

SGF - LHR

SGFLHR

Springfield-Branson

Wed 5/6

6:05 am-7:15 am

1 stop19h 10m

London Heathrow

Wed 5/13

8:40 am-10:27 pm

2 stops19h 47m

$885

Kansas CityLondon

MCI - LHR

MCILHR

Kansas City

Tue 4/21

10:18 am-7:55 am

1 stop15h 37m

London Heathrow

Tue 4/28

7:25 am-5:38 pm

2 stops16h 13m

$885

SpringfieldLondon

SGF - LHR

SGFLHR

Springfield-Branson

Tue 4/21

3:10 pm-9:00 am

1 stop11h 50m

London Heathrow

Tue 8/25

6:50 am-12:56 am

2 stops24h 06m

$885

Kansas CityLondon

MCI - LHR

MCILHR

Kansas City

Sun 4/26

10:36 am-8:50 am

2 stops16h 14m

London Heathrow

Tue 5/5

9:55 am-8:10 pm

2 stops16h 15m

$889

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/19

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

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

Currently, February is the cheapest month in which you can book a flight from Missouri to London (average of $526). Flying from Missouri to London 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.

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 United Airlines, Delta, and SWISS fly from Missouri to London in about 13h 28m. The time it takes to get you to your destination can typically vary by up to 1h 46m. The distance from Missouri to London is about 4186 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 Delta and United Airlines, with prices starting from $254 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 cheapest flights from Missouri to London?

    On average you can expect to pay $1,658 for a flight from Missouri to London. The cheapest flight overall is $241 while the most popular route, (Lambert-St Louis - London Heathrow) is currently priced at $786.

  • 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, February is the cheapest month in which you can book a flight from Missouri to London (average of $526). Flying from Missouri to London 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?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Borehamwood
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton
Slough
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 March 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$483Average$928FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$529Average$705FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$533Average$871FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$563Average$950FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$572Average$932FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$574Average$822FlexibilityNo cancel feeOn-time70%
IberiaCheapest$580Average$936FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$580Average$854FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$620Average$703FlexibilityNo cancel feeOn-time72%

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