Cheap flights from Chennai to London from $259

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Chennai, with most prices found around $698. If you’re not able to fly to London Heathrow Airport in February, then October is your next best option. Flight prices from Chennai to London Heathrow Airport during October average around $707.

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $1,121. The most expensive day to fly to London Heathrow Airport is Monday, with ticket prices averaging around $1,392.

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 $774 when searching weeks out. 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 $689 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 49% on your flight if you consider stops on a Chennai to London Heathrow Airport flight.

SWISS and British Airways are the most popular carriers operating from Chennai to London Heathrow

British Airways, Etihad Airways and Emirates 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 47% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 3 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 13% 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 189 minutes.

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

Sunday is statistically the day of the week which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

As of July 2026, 3 flights take off from Chennai and land in London Heathrow Airport each day. The most common flight departure time for this route is 5:00AM, with 100% of daily flights taking off in the morning.

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