AirHint found the following cheapest return flights from Singapore (SIN) to Kathmandu (KTM) in April 2026 (see full year).

Return flights

08 Apr - 26 Apr	Air India
09 Apr - 26 Apr	Air India
10 Apr - 25 Apr	IndiGo
06 Apr - 11 Apr	Air India
10 Apr - 13 Apr	Air India
02 Apr - 05 Apr	Air India
03 Apr - 05 Apr	Air India
02 Apr - 06 Apr	Air India
03 Apr - 06 Apr	Air India
13 Apr - 16 Apr	Air India
24 Apr - 04 May	Air India
24 Apr - 03 May	Air India
24 Apr - 04 May	Singapore Airlines	direct
24 Apr - 03 May	Singapore Airlines	direct

Also check the deals for one-way flights from Singapore to Kathmandu in April.

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 Singapore to Kathmandu in April from $352

Return flights