Cheap flights from London Heathrow Airport to Chennai from C$ 519

The cheapest month to fly to Chennai from London Heathrow Airport is in September. Flight prices, which tend to average around C$ 897, are often lower during this time because this is during the off-season. If you’re not able to fly to Chennai in September, then May is your next best option. Flight prices from London Heathrow Airport to Chennai during May average around C$ 935.

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

You are more likely to see cheaper flights to Chennai from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Chennai for around C$ 1,062 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chennai from London Heathrow Airport for as low as C$ 982 on momondo.

There are 2 cabin classes available to choose from on London Heathrow Airport to Chennai 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 67% on your flight if you consider stops on a London Heathrow Airport to Chennai flight.

As of September 2026, prices for London Heathrow Airport to Chennai flights are approximately 19% cheaper when compared to flights at the same time last year.

Historically, on average around 19% 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 153 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. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways has had the least delays on this route over the last 12 months, with about 19% of their flights experiencing any sort of delay.

3 flights are operational daily from London Heathrow Airport to Chennai as of September 2026. The most popular departure time for this route is 12:00p.m., with 100% of flights per day taking off in the afternoon.

The number of flights available between London Heathrow Airport and Chennai is 21 per week as of September 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.