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

Return flights

04 May - 07 May	Malaysia Airlines
18 May - 22 May	China Southern
13 May - 26 May	China Southern
16 May - 20 May	SriLankan Airlines
18 May - 22 May	Thai Airways	direct
13 May - 26 May	Thai Airways	direct
07 May - 23 May	Thai Airways	direct
02 May - 09 May	Air India
16 May - 17 May	Air India
16 May - 20 May	Thai Airways	direct

Also check the deals for one-way flights from Bangkok 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 Bangkok to Kathmandu in May from 328€

Return flights