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

Return flights

06 May - 09 May	Air India
08 May - 16 May	Air India
14 May - 22 May	Air India
05 May - 10 May	Air India
23 May - 28 May	Air India
12 May - 21 May	Air India
07 May - 17 May	Air India
20 May - 04 Jun	SriLankan Airlines
22 May - 28 May	Air India
25 May - 28 May	Air India
23 May - 30 May	Air India
27 May - 02 Jun	IndiGo	direct
25 May - 08 Jun	IndiGo	direct
22 May - 03 Jun	Air India

Also check the deals for one-way flights from Mumbai to Kathmandu in May.

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 May from 137€

Return flights