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

Return flights

20 Aug - 27 Aug	Nepal Airlines	direct
20 Aug - 27 Aug	Air India
15 Aug - 22 Aug	Nepal Airlines	direct
28 Aug - 01 Sep	Air India
10 Aug - 24 Aug	Air India
09 Aug - 24 Aug	Air India
18 Aug - 25 Aug	Air India
21 Aug - 28 Aug	Air India
11 Aug - 25 Aug	Air India
01 Aug - 09 Aug	Air India
01 Aug - 05 Aug	Air India
11 Aug - 02 Sep	Air India
31 Aug - 16 Sep	Nepal Airlines
28 Aug - 03 Sep	SriLankan Airlines
29 Aug - 04 Sep	Air India
29 Aug - 02 Sep	Air India
31 Aug - 04 Sep	Air India
28 Aug - 01 Sep	IndiGo	direct
11 Aug - 02 Sep	IndiGo	direct
31 Aug - 04 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 139€

Return flights