Cheap flights from London to Chennai from ₹ 36,823

The month of September is another great option to travel to Chennai, with average flight prices from London averaging around ₹ 60,427.

On average, the least expensive day to fly to Chennai from London is on a Monday. momondo users have found tickets for Monday departures for as low as ₹ 71,110. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from London to Chennai on a Sunday will generally be more expensive and average around ₹ 104,285. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest London to Chennai flights are usually those with departure times in the morning. Our users have found flights to Chennai in the morning for as low as ₹ 84,059. Try not to purchase tickets at midday because they tend to be around ₹ 91,929. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from London Heathrow to Chennai for the best London - Chennai flight prices

You are more likely to see cheaper flights to Chennai from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Chennai for around ₹ 71,655 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chennai from London for as low as ₹ 65,714 on momondo.

There are 2 cabin classes available to choose from on London to Chennai flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Qatar Airways, Etihad Airways, and Emirates are the most popular carriers operating from London to Chennai

Air India, Etihad Airways and British Airways are the top three most popular airlines that fly to Chennai from London according to our data. Air India is the first choice among our users, with 32% of people opting to fly with this airline when travelling to Chennai. Keep in mind that there are 8 different airlines that fly to Chennai on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% of flights between London and Chennai have experienced a delay on any given week. The average delay length over the past 12 months has been 140 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 21% of their flights experiencing any sort of delay.

Abu Dhabi (AUH) was the most common stop: 39% of momondo users choosing one-stop flights on this route connected there.

Flights via Mumbai (BOM) offer the lowest average return price of ₹ 54,717.

Flights connecting via Muscat (MCT) have the shortest average one-way travel time: 11h 55m.

Frankfurt am Main (FRA) has the shortest average stopover time for this route: 1h 10m.

As of June 2026, there are 2 flights per day flying from London to Chennai. The most common time of day flights depart is 12:00, with 100% of flights taking off in the afternoon.

As of June 2026, there are 17 flights per week flying from London to Chennai. The most common day of the week flights depart is Fri, with 18% of flights taking off on this day.