Cheap flights from Indiana to London from £165

In general, September is the cheapest month to fly from Indiana to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £463. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from Indiana averaging around £489.

On average, the least expensive day to fly to London Heathrow Airport from Indiana is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £597. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Sunday is £632.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Indiana to London Heathrow Airport in the morning for as low as £593. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £659 on average. Flights to London Heathrow Airport from Indiana in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

You are more likely to see cheaper flights to London Heathrow Airport from Indiana when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £599 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Indiana for as low as £481 on momondo.

The number of flights available between Indiana and London Heathrow Airport is 324 per week as of February 2026. The most frequent departure day is Tue, with 16% of weekly flights leaving on this day.

If you’re flying from a popular airport in Indiana, such as Indianapolis or South Bend, and flying into London Heathrow Airport, then you can expect flight times to average 9h 57m and 10h 19m, respectively.