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

Return flights

04 Dec - 08 Dec	IndiGo	direct
10 Dec - 18 Dec	IndiGo	direct
06 Dec - 13 Dec	IndiGo	direct
04 Dec - 12 Dec	IndiGo	direct
02 Dec - 07 Dec	IndiGo	direct
05 Dec - 09 Dec	IndiGo	direct
11 Dec - 18 Dec	IndiGo	direct
08 Dec - 12 Dec	IndiGo	direct
01 Dec - 08 Dec	IndiGo	direct
12 Dec - 15 Dec	IndiGo	direct
12 Dec - 11 Jan	Air India
28 Dec - 25 Jan	IndiGo	direct
31 Dec - 06 Jan	IndiGo	direct
31 Dec - 07 Jan	IndiGo	direct
21 Dec - 01 Jan	IndiGo
24 Dec - 02 Jan	IndiGo
31 Dec - 15 Jan	SriLankan Airlines
28 Dec - 02 Jan	IndiGo
29 Dec - 03 Jan	IndiGo
22 Dec - 04 Jan	IndiGo

Also check the deals for one-way flights from Mumbai to Kathmandu 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 Kathmandu in December from $177

Return flights