Search for cheap flights and last-minute deals with Netflights. We've scanned all the flights from London Heathrow to Calcutta, across the nine airlines that offer this route. We've found that 26 / May / 2025 is the cheapest date to travel at the moment, but it's best to go through the results to see which flight suits you.
There are 715 flights from London Heathrow to or via Calcutta every week. Out of the nine available airlines, the most popular ones are Air India, British Airways & Emirates. But that doesn’t necessarily mean they’ll be the best option for your travel dates. To see as many flights as possible, try widening your search to include other departure airports.
Your flight from London Heathrow to Calcutta will take at least 12 hrs. On average, it takes 15 hrs 15 mins to fly the 7990 km distance. Take a look at flight times to see which one works best for you.
If you want to travel in December, it's best to book your flights early, as this is peak season in Calcutta. The cheapest month to fly is normally May – try searching three to four months prior to then to get a bargain. You can also search by month, which will reveal the cheapest time of the week to fly.
