When to fly
Calcutta has a tropical wet-and dry climate that can be extremely hot and humid during the summer months (March to June), but cool and dry during the winter season (December to February).
During the summer months, in particular April to mid-June, the weather can be completely unbearable and is best avoided. But if you can stand the heat there are great opportunities to book cheap flights to Calcutta. Temperatures are in the 30s and frequently exceed 40 degrees during the day time. The heat continues through late June to September, although temperatures stay just under 40 degrees for the most part. These months make up the summer monsoon season, which are characterised by heavy rains, with the most rain usually falling in July. This is not a popular tourist period as many visitors find the weather uncomfortable.
The peak time for people booking flights to Calcutta is following on the monsoon period, from November to February. This is the winter season, which is when the weather is at its coolest, usually in the teens or 20s and humidity is low. As this is the most popular time to visit Calcutta the cost of flights and accommodation may be slightly higher. If you do decide to book your flight to Calcutta during this popular time, then how about spending New Year’s Eve on a different continent. This has become a major event with various festivities taking place. The main parades and celebrations are staged on Park Street.
If you're searching for an off-peak cheap flight to Calcutta as an alternative, the beginning of October is a perfect time to see the city in full flow. At this time the locals celebrate the annual Hindu Durga Puja, a massive six-day festival that honours the goddess Durga. People from all over the country come to visit the city during this time, when it is brightly decorated with lights and filled with a carnival atmosphere. The streets can become packed as people leave their cars to carry on the festivities on foot.