Cheap flights from St. Louis (STL) to London (LON) from $286

Friday flights are generally found to be more expensive for flights from St. Louis to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

Travelers have found it’s best to book a flight 51 days in advance to save up to 76% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 51 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to London 1-2 weeks in advance for as low as $1,273, or $1,825 for flights within the next 24 hours.

Flights from St. Louis to London lean towards being more expensive in July. Prices are generally better when you fly from St. Louis to London in February, with the cheapest ticket starting at $657.

It’s optimal to fly from St. Louis to London in the evening. By choosing this option you can save up to 12% on the cost of your flight, compared to a flight at noon.

Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to London. You should not have trouble finding flights to London from Lambert-St Louis; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 11 airlines have flights from the St. Louis airport to London. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

Some of our airline partners flying from Lambert-St Louis to London have new flexible policies in place due to COVID-19. American Airlines, British Airways, and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Yes, there are multiple flights from St. Louis to London for under $700. The cheapest flight booked recently is on Multiple Airlines for just $688, but on average you can expect to pay $742.

There are currently 15+ open flights from St. Louis to London within the next 7 days for less than $1,000.

According to our current data, Delta ($716), American Airlines ($717), and Finnair ($730) offers the cheapest pricing from St. Louis to London. These flights start at 20% lower than the current average price 3 months from now.

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

When booking a flight from St. Louis to London, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.

Lambert-St Louis Airport is STL and London Heathrow Airport is LHR. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. London Gatwick Airport (LGW), London City Airport (LCY), London Stansted Airport (STN), London Luton Airport (LTN), London Southend Airport (SEN) are other airports near this flight route and their unique identifiers/IATA codes.