AirHint found the following cheapest return flights from Kathmandu (KTM) to Singapore (SIN) in July 2025 (see full year).

Return flights

09 Jul - 23 Jul	IndiGo
09 Jul - 14 Jul	IndiGo
15 Jul - 22 Jul	IndiGo
03 Jul - 09 Jul	IndiGo
10 Jul - 16 Jul	IndiGo
26 Jul - 03 Aug	IndiGo
12 Jul - 18 Jul	IndiGo
22 Jul - 27 Jul	IndiGo
11 Jul - 12 Jul	IndiGo
06 Jul - 14 Jul	IndiGo
06 Jul - 12 Jul	IndiGo
26 Jul - 02 Aug	IndiGo
26 Jul - 03 Aug	Singapore Airlines	direct
26 Jul - 02 Aug	Singapore Airlines	direct

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

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 Kathmandu to Singapore in July from $314

Return flights