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

Return flights

15 Apr - 22 Apr	Air India
13 Apr - 20 Apr	IndiGo
24 Apr - 06 May	Scoot
24 Apr - 05 May	Air India
12 Apr - 19 Apr	Air India
10 Apr - 17 Apr	Scoot
09 Apr - 16 Apr	Air India
14 Apr - 24 Apr	AirAsia
01 Apr - 08 Apr	Air India
08 Apr - 22 Apr	IndiGo
22 Apr - 03 May	Air India
04 Apr - 16 Apr	SriLankan Airlines
25 Apr - 06 May	SriLankan Airlines
05 Apr - 21 Apr	Air India
23 Apr - 05 May	IndiGo
24 Apr - 02 May	IndiGo
23 Apr - 04 May	IndiGo
24 Apr - 04 May	IndiGo
23 Apr - 09 May	IndiGo
25 Apr - 10 May	SriLankan Airlines

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 289€

Return flights