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

Return flights

24 Dec - 31 Dec	Nepal Airlines	direct
18 Dec - 20 Dec	Air India
22 Dec - 29 Dec	Air India
18 Dec - 26 Dec	Air India
31 Dec - 07 Jan	IndiGo	direct
23 Dec - 25 Dec	Air India
21 Dec - 01 Jan	Air India
28 Dec - 06 Jan	IndiGo	direct
30 Dec - 08 Jan	IndiGo	direct
18 Dec - 20 Jan	Air India
28 Dec - 11 Jan	IndiGo	direct
18 Dec - 20 Jan	IndiGo	direct
22 Dec - 09 Jan	IndiGo	direct
27 Dec - 15 Jan	IndiGo
31 Dec - 05 Jan	Air India
18 Dec - 24 Dec	Air India
28 Dec - 31 Dec	Air India
25 Dec - 31 Dec	Air India
27 Dec - 31 Dec	Air India
22 Dec - 31 Dec	Air India

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.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu

Cheapest return flights from Mumbai to Kathmandu in December from 137€

Return flights