Cheap flights from Indianapolis to London from £227

The cheapest month to fly to London from Indianapolis is in March. Flight prices, which tend to average around £65, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Indianapolis averaging around £71.

You are more likely to see cheaper flights to London from Indianapolis when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £615 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Indianapolis for as low as £490 on momondo.

You could potentially save up to 31% on your flight if you consider stops on a Indianapolis to London flight.

As of May 2026, prices for Indianapolis to London flights are approximately 22% more expensive when compared to flights at the same time last year.

Delta, United Airlines, and SWISS are the most popular carriers operating from Indianapolis to London

British Airways, Virgin Atlantic and United Airlines are the top three most popular airlines that fly to London from Indianapolis according to our data. British Airways is the first choice among our users, with 62% of people opting to fly with this airline when travelling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.