AirHint found the following cheapest return flights from Bangkok (BKK) to Kolkata (CCU) in August 2026 (see full year).

Return flights

21 Aug - 27 Aug	Thai VietJet Air	direct
21 Aug - 28 Aug	Thai VietJet Air	direct
03 Aug - 12 Aug	Thai AirAsia	direct
31 Aug - 19 Sep	Air India Express
02 Aug - 06 Aug	Air India Express
02 Aug - 04 Aug	Air India Express
05 Aug - 06 Aug	Air India Express
31 Aug - 05 Sep	Air India Express

Also check the deals for one-way flights from Bangkok to Kolkata in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Bangkok to Kolkata in August from $159

Return flights