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Cheap flights from St. Louis to London
Round-trip
Economy
Flight information for St. Louis to London
(STL to LON)
Find info about flight duration, direct flights, and airports for your flight from St. Louis to London
| Best Price Found | $682 | The best flight deal from St. Louis to London found on momondo in the last 72 hours is $682 |
| Fastest flight time | 12h 3m | The fastest flight from St. Louis to London takes 12h 3m |
| Direct flights | None | There are no direct flights from St. Louis to London. Popular non-direct routes for this connection are Lambert-St Louis - London City, Lambert-St Louis - London Heathrow and Lambert-St Louis - London Gatwick. |
| Airports in London | 6 airports | There are 6 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW), London Southend (SEN) |
How to get the cheapest flight ticket from St. Louis to London
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly from St. Louis to London?
September
The cheapest time of year to fly to London from St. Louis is September. Most expensive is December
What is the cheapest day to depart St. Louis for London?
Tuesday
The cheapest day of the week is typically Tuesday. The most expensive is typically Friday
When is the cheapest time to fly from St. Louis to London?
in the evening
St. Louis to London flights are approximately 14% more expensive at noon than in the evening
What is the cheapest airline that flies to London from St. Louis?
Brussels Airlines
Brussels Airlines, Iberia, and United Airlines are the most popular carriers operating from St. Louis to London
What is the cheapest St. Louis to London flight route?
Lambert-St Louis - London Heathrow
Fly from Lambert-St Louis to London Heathrow for the best St. Louis - London flight prices
How far in advance should you book St. Louis to London flights?
54 days before
The cheapest time to buy a flight from St. Louis to London is approximately 54 days to departure
60
Days before departure
0
Easily compare round-trip flights from St. Louis to London
Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to London by changing tabs
Air Canada![Air Canada]()
Nov 24![Air Canada]()
Dec 1
STL12:50 pmLambert-St Louis
12h 00m
1 stop
LHR12:50 amLondon Heathrow
LHR4:00 amLondon Heathrow
14h 19m
1 stop
STL6:19 pmLambert-St Louis
United Airlines![United Airlines]()
Oct 12![United Airlines]()
Oct 26
STL11:05 amLambert-St Louis
10h 35m
1 stop
LHR9:40 pmLondon Heathrow
LHR2:50 amLondon Heathrow
16h 08m
2 stops
STL6:58 pmLambert-St Louis
Find the cheapest one-way flights from St. Louis to London
If you're looking for one-way flights from St. Louis to London, view some of our deals below.
Best airlines flying from St. Louis to London
Compare and see reviews for airlines that fly from St. Louis to London with momondo
AirlineFree CancellationPrice
PriceFrom $263
Free Cancellation
Reviews
Cons: Sarasota ticketing agent was not very nice at all 😟 Houston Gate agent was not nice either. We were treated like we were stupid for asking questions. I hope it’s not racism issues. I wished I had taken their names.
1 / 10
PriceFrom $351
Free Cancellation
Reviews
Cons: Cabin crew were arrogant and didn’t allow us to storage our backpacks in the over head cabins.
1 / 5
PriceFrom $360
Free Cancellation
Reviews
Pros: Delayed flight no reasons seems like American Airlines don’t know what to do in these situations
Cons: I believe this airlines should have figured the answer to this question by now.
1 / 10
PriceFrom $383
Free Cancellation
Reviews
Cons: British Airways is always amazing
1 / 10
PriceFrom $395
Free Cancellation
Reviews
Pros: All is great.
Cons: Nothing is not good.
1 / 8
PriceFrom $433
Free Cancellation
Reviews
Pros: I really like the preferred seating area and the crew overall
Cons: Boarding was communicated by areas one time only. I would suggest to repeat communication of the areas that were told to board before so if you missed the first one you don’t have to wait until the end
1 / 6
PriceFrom $603
Free Cancellation
Reviews
Pros: Although there were delays they kept us informed on a regular basis as to what to expect and seemed genuinely apologetic for any inconveniences. Boarding and deplaning were smooth and efficient. I really appreciated that there was no charge for checking a bag. I am certain that contributes to the ease of everyone getting on and off the plane. Our bags arrived at baggage claim about the same time we got there. I would definitely fly with Virgin Atlantic again.
1 / 2
PriceFrom $620
Free Cancellation
Reviews
Cons: The air conditioning
1 / 10
PriceFrom $658
Free Cancellation
Reviews
Pros: Yes, Very good
1 / 9
PriceFrom $691
Free Cancellation
Reviews
Cons: Wouldn't let us on the flight when there was plenty of time to get there. Manager was arrogant and slow - didn't care. Poor policies at that airport.
1 / 10
Are airlines flying from Lambert-St Louis to London offering flexible cancellation due to COVID-19?
Due to the global impact of COVID-19, some of our airline partners operating flights from Lambert-St Louis to London, such as American Airlines, United Airlines, and British Airways may have put in place flexible cancellation policies. Use our site to search for all of the airlines offering this flexibility to you.
How far is Lambert-St Louis to London by plane?
London is 4197.7 mi away from Lambert-St Louis. Flights usually cover this in 11h 31m, depending on flying conditions and air traffic around both airports.
Can I fly to London from Lambert-St Louis right now?
Information is based on travel restrictions from Lambert-St Louis to London
Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter London.
COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.
Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering London.
Documents
Mandatory passenger locator form - Submit the form any time in the 48 hours before arriving in the UK. Show the form when checking in your plane, train or ferry to the UK.
Managed quarantine package for Scotland - All travelers arriving directly to Scotland are required to book their Managed Quarantine Package prior to travel.
COVID-19 testing package - All travelers must book and pay for a COVID-19 Testing Package prior to travel to England and Scotland.
Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter London.
COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.
Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering London.
Documents
Mandatory passenger locator form - Submit the form any time in the 48 hours before arriving in the UK. Show the form when checking in your plane, train or ferry to the UK.
Managed quarantine package for Scotland - All travelers arriving directly to Scotland are required to book their Managed Quarantine Package prior to travel.
COVID-19 testing package - All travelers must book and pay for a COVID-19 Testing Package prior to travel to England and Scotland.
Can I fly back to Lambert-St Louis from London?
Returning to Lambert-St Louis from London
COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.
Quarantine requirements
Visitors from London are not required to quarantine after entering Lambert-St Louis.
COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.
Quarantine requirements
Visitors from London are not required to quarantine after entering Lambert-St Louis.