£417 Cheap Flights from London (LCY) to St. Louis (STL)

View £417 flight on Wed, 16 Sept 2026Opens in a new window

Popular airlines from London City Airport (LCY) to Lambert-St. Louis International Airport (STL)

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Cheap Flights from London (LCY) to St. Louis (STL)

Prices were available within the past 7 days and start at £417 for one-way flights and £682 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Tue, 15 Sept - Wed, 30 Sept
LCY
London
STL
St. Louis
£682 Return, found 3 days ago
£682
Return
found 3 days ago
Select KLM flight, departing Tue, 15 Sept from London to St. Louis, returning Wed, 30 Sept, priced at £682 found 3 days ago
KLM
Mon, 7 Sept - Sat, 12 Sept
LCY
London
STL
St. Louis
£712 Return, found 23 hours ago
£712
Return
found 23 hours ago
Select KLM flight, departing Mon, 7 Sept from London to St. Louis, returning Sat, 12 Sept, priced at £712 found 23 hours ago
KLM
Sun, 30 Aug - Sun, 6 Sept
LCY
London
STL
St. Louis
£811 Return, found 5 days ago
£811
Return
found 5 days ago
Select KLM flight, departing Sun, 30 Aug from London to St. Louis, returning Sun, 6 Sept, priced at £811 found 5 days ago
KLM
Tue, 14 Jul - Sun, 2 Aug
LCY
London
STL
St. Louis
£811 Return, found 4 days ago
£811
Return
found 4 days ago
Select KLM flight, departing Tue, 14 Jul from London to St. Louis, returning Sun, 2 Aug, priced at £811 found 4 days ago
KLM
Sun, 1 Nov - Wed, 11 Nov
LCY
London
STL
St. Louis
£822 Return, found 5 days ago
£822
Return
found 5 days ago
Select KLM flight, departing Sun, 1 Nov from London to St. Louis, returning Wed, 11 Nov, priced at £822 found 5 days ago
Lufthansa
Wed, 26 Aug - Sun, 30 Aug
LCY
London
STL
St. Louis
£826 Return, found 4 days ago
£826
Return
found 4 days ago
Select Lufthansa flight, departing Wed, 26 Aug from London to St. Louis, returning Sun, 30 Aug, priced at £826 found 4 days ago
KLM
Wed, 1 Jul - Wed, 15 Jul
LCY
London
STL
St. Louis
£832 Return, found 1 day ago
£832
Return
found 1 day ago
Select KLM flight, departing Wed, 1 Jul from London to St. Louis, returning Wed, 15 Jul, priced at £832 found 1 day ago
Virgin Atlantic
Sun, 30 Aug - Sun, 6 Sept
LCY
London
STL
St. Louis
£853 Return, found 5 days ago
£853
Return
found 5 days ago
Select Virgin Atlantic flight, departing Sun, 30 Aug from London to St. Louis, returning Sun, 6 Sept, priced at £853 found 5 days ago
Delta
Tue, 26 May - Thu, 18 Jun
LCY
London
STL
St. Louis
£870 Return, found 3 days ago
£870
Return
found 3 days ago
Select Delta flight, departing Tue, 26 May from London to St. Louis, returning Thu, 18 Jun, priced at £870 found 3 days ago
British Airways
Tue, 26 May - Thu, 18 Jun
LCY
London
STL
St. Louis
£873 Return, found 3 days ago
£873
Return
found 3 days ago
Select British Airways flight, departing Tue, 26 May from London to St. Louis, returning Thu, 18 Jun, priced at £873 found 3 days ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from £901
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city centre20 min
Flights from £901

Frequently asked questions

How do I find cheap flights from London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are approximately 4 connecting flights per day from London City (LCY) to Lambert-St. Louis Intl. (STL). Some common connection points include Schiphol (AMS), Frankfurt Intl. (FRA), and (ZRH).
What is the earliest flight from London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from LCY to STL. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Flying from LCY to STL with a connection usually takes about 25 hours, traveling roughly 4,208 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Select the "Business class" and "First class" filters when looking for LCY to STL flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your London (LCY-London City) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
London City
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Aer Lingus, British Airways, Delta, Iberia, KLM, Lufthansa, Virgin Atlantic
Return price
£681
Distance
6732 km

Book with confidence

Compare flights from London to St. Louis easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to St. Louis. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Lambert-St. Louis Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from London City to Lambert-St. Louis Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from London City (LCY) to Lambert-St. Louis Intl. (STL)

The easiest way to view the best deals on flights from London to St. Louis today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from London City to Lambert-St. Louis Intl. start at just £682 and range up to £873.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and St. Louis
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to St. Louis flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from London City to Lambert-St. Louis Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from London to St. Louis easily and book with confidence

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*Available to Expedia members.