Cheap flights from Chennai to London from £216

In general, February is the cheapest month to fly from Chennai to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £518. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Chennai averaging around £520.

On average, the least expensive day to fly to London Heathrow Airport from Chennai is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £586. 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 £692.

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

You are more likely to see cheaper flights to London Heathrow Airport from Chennai when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £577 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 Chennai for as low as £467 on momondo.

There are 3 cabin classes available to choose from on Chennai to London Heathrow Airport 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 2% on your flight if you consider stops on a Chennai to London Heathrow Airport flight.

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

British Airways, Etihad Airways and Air India are the top three most popular airlines that fly to London Heathrow Airport from Chennai according to our data. British Airways is the first choice among our users, with 51% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 10 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% of flights between Chennai and London have experienced a delay on any given week. The average delay length over the past 12 months has been 193 minutes.

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

Sunday is statistically the day of the week that experiences the fewest delays on this flight route. Tuesday 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 11% of their flights experiencing any sort of delay.

Abu Dhabi (AUH) was the most common stop: 33% of momondo users choosing one-stop flights on this route connected there.

Flights via Mumbai (BOM) offer the lowest average return price of £461.

Flights connecting via Doha (DOH) have the shortest average one-way travel time: 13h 25m.

Frankfurt am Main (FRA) has the shortest average stopover time for this route: 1h 40m.

As of April 2026, 2 flights take off from Chennai and land in London Heathrow Airport each day. The most common flight departure time for this route is 05:00, with 100% of daily flights taking off in the morning.

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