Booking with Air India 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Kolkata. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, the most affordable month to book a Air India flight from London Heathrow Airport to Kolkata in March, with an average price of £356. Conversely, traveling with Air India from London Heathrow Airport to Kolkata in December will be the most expensive, with an average cost of £584. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
In terms of precipitation, rainfall in Kolkata ranges from 7.0 - 356.0 inches per month. August is typically the wettest month, when rainfall can reach 356.0 mm. December is typically the driest time to visit Kolkata when rainfall is around 7.0 mm.
If weather is an important factor for your trip to Kolkata, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 31.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 20.0 C).
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