AirHint found the following cheapest return flights from Mumbai (BOM) to Kathmandu (KTM) in August 2026 (see full year).

Return flights

11 Aug - 19 Aug	SriLankan Airlines
19 Aug - 03 Sep	SriLankan Airlines
20 Aug - 26 Aug	SriLankan Airlines
20 Aug - 26 Aug	IndiGo	direct
12 Aug - 17 Aug	IndiGo	direct
11 Aug - 19 Aug	IndiGo	direct
19 Aug - 03 Sep	IndiGo	direct
22 Aug - 05 Sep	Air India
11 Aug - 11 Aug	Air India
21 Aug - 05 Sep	Air India
28 Aug - 05 Sep	Air India
09 Aug - 13 Sep	IndiGo	direct
21 Aug - 05 Sep	IndiGo	direct
22 Aug - 05 Sep	IndiGo	direct
28 Aug - 05 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 136€

Return flights