Cheap flights from Missouri to London from $315

The cheapest month to fly to London from Missouri is in February. Flight prices, which tend to average around $720, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from Missouri averaging around $781.

The cheapest day to depart from Missouri to London is on a Thursday. Travelers who choose to depart for London on a Thursday will often find tickets for as low as $756. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,181. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Fly from Lambert-St Louis to London Heathrow for the best Missouri - London flight prices

You are more likely to see cheaper flights to London from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $960 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Missouri for as low as $842 on momondo.

There are 3 cabin classes available to choose from on Missouri to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 17% on your flight if you consider stops on a Missouri to London flight.

Delta, United Airlines, and Aer Lingus are the most popular carriers operating from Missouri to London

British Airways, American Airlines and United Airlines are the top three most popular airlines that fly to London from Missouri according to our data. British Airways is the first choice among our users, with 46% of people opting to fly with this airline when traveling to London. Keep in mind that there are 9 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

The number of flights available between Missouri and London is 2 per day as of September 2026. The most frequent departure time is 9:00PM, with 100% of daily flights leaving in the evening.

15 flights are operational weekly from Missouri to London as of September 2026. The most popular departure day for this route is Tue, with 33% of flights per week taking off on this day.