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

Return flights

24 Aug - 30 Aug	Air India
01 Aug - 12 Aug	Air India
04 Aug - 18 Aug	Air India
03 Aug - 19 Aug	Air India
01 Aug - 31 Aug	Air India
01 Aug - 10 Aug	Air India
01 Aug - 16 Aug	Air India
22 Aug - 30 Aug	Air India
08 Aug - 16 Aug	Air India
08 Aug - 10 Aug	Air India
25 Aug - 08 Sep	Air India
30 Aug - 13 Sep	Air India
17 Aug - 03 Sep	Air India
26 Aug - 02 Sep	Air India
28 Aug - 05 Sep	Air India
28 Aug - 02 Sep	Air India
29 Aug - 01 Sep	Air India
26 Aug - 02 Sep	IndiGo	direct
31 Aug - 07 Sep	IndiGo	direct
29 Aug - 01 Sep	IndiGo	direct

Also check the deals for one-way flights from Mumbai to Kathmandu 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 Mumbai to Kathmandu in August from 132€

Return flights