Cheap flights from Kolkata to London from £197

The cheapest month to fly to London from Kolkata is in February. Flight prices, which tend to average around £502, are often lower during this time because this is during the off-season. The month of May is another great option to travel to London, with average flight prices from Kolkata averaging around £526.

You are more likely to see cheaper flights to London from Kolkata when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £585 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Kolkata for as low as £471 on momondo.

You could potentially save up to 57% on your flight if you consider stops on a Kolkata to London flight.

As of September 2026, prices for Kolkata to London flights are approximately 24% cheaper when compared to flights at the same time last year.

Air India, IndiGo, and KLM are the most popular carriers operating from Kolkata Netaji S. Chandra to London

Air India, Emirates and Etihad Airways are the top three most popular airlines that fly to London from Kolkata according to our data. Air India is the first choice among our users, with 36% of people opting to fly with this airline when travelling to London. Keep in mind that there are 4 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Dubai (DXB) was the most common stop: 45% of momondo users choosing one-stop flights on this route connected there.

Flights via Mumbai (BOM) offer the lowest average return price of £474.

Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 14h 10m.

Dubai (DXB) has the shortest average stopover time for this route: 1h 15m.