AirHint found the following cheapest return flights from Mumbai (BOM) to Bangkok (DMK) in December 2025 (see full year).

Return flights

11 Dec - 15 Dec	Thai Lion Air	direct
11 Dec - 21 Dec	Thai Lion Air	direct
04 Dec - 07 Dec	Thai Lion Air	direct
04 Dec - 08 Dec	Thai Lion Air	direct
01 Dec - 01 Dec	Thai Lion Air	direct
18 Dec - 25 Dec	Thai Lion Air	direct
15 Dec - 20 Dec	Thai Lion Air	direct
24 Dec - 02 Jan	Thai Lion Air	direct
29 Dec - 04 Jan	Thai Lion Air	direct
20 Dec - 03 Jan	Thai Lion Air	direct
05 Dec - 14 Dec	VietJet Air
10 Dec - 19 Dec	IndiGo
07 Dec - 14 Dec	VietJet Air
24 Dec - 03 Jan	IndiGo

Also check the deals for one-way flights from Mumbai to Bangkok in December.

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 Mumbai to Bangkok in December from $189

Return flights