CA $1,553 Cheap Flights from London (LHR) to St. Louis (STL)

Popular airlines from Heathrow Airport (LHR) to Lambert-St. Louis International Airport (STL)

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Cheap flights from London (LHR) to St. Louis (STL)

Prices were available within the past 7 days and start at CA $1,553 for one-way flights and CA $1,349 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Air Canada
Air Canada
Brussels Airlines
Lufthansa
Brussels Airlines
Brussels Airlines
Air Canada
Austrian Airlines
British Airways

Find the cheapest month to fly from London (LHR) to St. Louis (STL)

January is typically the cheapest month to fly

From CA $975 - CA $2,646 per traveller.

Graph displaying average flight prices per month

Flight from London to St. Louis (LHR - STL) route information
Origin airport
Heathrow
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
CA $1,349
Distance
6703 km

London to St. Louis Flights

The easy way to book your flights from London to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from London whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from London to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Heathrow, LHR to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from London to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from London currently is just CA $1,349 rising to CA $1,827.  

Here are more money-saving tips: 

  • Fly in August when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from London 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Frequently asked questions

How much is a flight from London Heathrow to Lambert Field?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip flight between London Heathrow and Lambert-St. Louis Intl. Airport (STL) was CA $1,349. Fares this good don't wait forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport to Lambert-St. Louis Intl. Airport (STL)?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from Heathrow Airport to Lambert Field that have flexible change policies?
Plenty of airlines will allow you to move your flight at no extra charge. All you pay is any additional cost for the new flight. When searching for Heathrow Airport to STL flights, you'll find a "No change fees" filter for you to pick.
How many hours is the flight from Heathrow Airport to STL?
It takes roughly 11 hours and 56 minutes to fly from Heathrow Airport to Lambert-St. Louis Intl. Airport (STL). If you'd like to get some rest, bring your neck pillow, an eye mask and some earplugs.
How far is the flight from Heathrow Airport (LHR) to STL?
With around 6,800 kilometres separating Hounslow and St. Louis, your flight will be a long one. Pack wisely and make your journey more comfortable. Little things like an eye mask and a quality travel pillow can make a huge difference.
Which airlines fly direct from Heathrow Airport (LHR) to Lambert-St. Louis Intl. Airport (STL)?
Currently, no airlines offer direct flights from LHR to Lambert Field. You'll need to book a flight with at least one stop. To get the best connections and price, lock in your airfare ahead of time.
Are Heathrow Airport to Lambert Field flight tickets cheaper when they're purchased at the last minute?
Flight prices change all the time, so it's no sure thing. While last-minute deals between Heathrow Airport (LHR) and Lambert Field are possible, it also makes sense to keep track of prices well before you fly. In fact, some carriers publish their prices up to a year prior to the departure date. Expedia is constantly updating the biggest bargains around, so keep checking and be ready to lock in your seat when the price dips.

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