Cheap flights from London to Indianapolis from $391

In general, September is the cheapest month to fly from London to Indianapolis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $71. If you are unable to visit Indianapolis during the month of September, then departing from London during the month March is also very affordable. Most momondo users find prices during this month for around $105.

You are more likely to see cheaper flights to Indianapolis from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Indianapolis for around $990 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Indianapolis from London for as low as $868 on momondo.

You could potentially save up to 37% on your flight if you consider stops on a London to Indianapolis flight.

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

Delta, British Airways, and KLM are the most popular carriers operating from London to Indianapolis

British Airways, Aer Lingus and American Airlines are the top three most popular airlines that fly to Indianapolis from London according to our data. British Airways is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Indianapolis. Keep in mind that there are 3 different airlines that fly to Indianapolis on a routine basis, so you have a few additional options to choose from.

Historically, on average around 34% of flights between London and Indianapolis have experienced a delay on any given week. The average delay length over the past 12 months has been 148 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

Chicago (ORD) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.

Flights via Dublin (DUB) offer the lowest average round-trip price of $937.

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 11h 20m.

Chicago (ORD) has the shortest average layover time for this route: 1h 17m.