Cheap flights from St. Louis (STL) to London (LON) from $277

Currently, November is the cheapest month in which you can book a flight from St. Louis to London (average of $653). Flying from St. Louis to London in June is currently the most expensive (average of $1,150). 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.

• What airport do you fly from for flights from St. Louis to London?

  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.

• Can I find flights from St. Louis to London for under $600 on Cheapflights?

  Yes, there are multiple flights from St. Louis to London for under $600. The cheapest flight booked recently is on Multiple Airlines for just $533, but on average you can expect to pay $671.

• Are there last-minute flights available from St. Louis to London for under $1,000?

  There are currently 20+ open flights from St. Louis to London within the next 7 days for less than $1,000.

• What are the cheapest airlines flying from St. Louis to London round-trip?

  According to our current data, Virgin Atlantic ($684), Delta ($721), and Air Canada ($725) offers the cheapest pricing from St. Louis to London. These flights start at 26% lower than the current average price 3 months from now.

• What are the most popular routes from St. Louis to London?

  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.

• What are the most popular airlines that fly from St. Louis to London?

  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.

• What does STL to LHR mean?

  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 Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN) are other airports near this flight route and their unique identifiers/IATA codes.

• Where are the most common layover locations when flying from St. Louis to London?

  Flights departing from St. Louis and landing in London layover in Chicago most frequently.

• What are some popular things to do or see while on a layover in Chicago?

  Chicago travelers tend to visit Grant Park, Magnificent Mile, and Wrigley Field more than anywhere else. Grant Park, Magnificent Mile, and Wrigley Field are located about 16.2 mi, 15.5 mi, and 13.0 mi, respectively from Chicago O'Hare Intl. Travelers can rent a car at Chicago O'Hare Intl for an average daily rate of $55 to make sightseeing during their layover a little easier.

• Where are the least popular layover locations for St. Louis to London flights?

  Flights departing from St. Louis and landing in London layover in Detroit least frequently.

• Can I find deals for flights from St. Louis to London that include extra baggage allowance?

  The amount of baggage you can bring on your St. Louis to London flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

• Can I find deals on flights from St. Louis to London with specific airlines?

  Yes, Cheapflights allows you to browse and filter St. Louis to London flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

• Can I find deals for flights from St. Louis to London that include hotel bookings?

  Yes. In addition to deals on St. Louis to London flights, Cheapflights offers vacation packages that include both flights and hotel.

• How can I find direct flights from St. Louis to London?

  After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to London.

• Can I find deals for business class flights from St. Louis to London?

  Yes. Cheapflights offers flight deals from St. Louis 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.

• Can I find deals for flights from St. Louis to London that allow pets onboard?

  Many airlines flying from St. Louis to London offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

• Can I find deals on last-minute flights from St. Louis to London?

  Yes, you can often find last-minute deals on St. Louis to London flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

• How recently were the St. Louis to London flight deals updated?

  The St. Louis to London flight deals you see on this page were last updated on 5/18.