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

Return flights

08 Jul - 16 Jul	IndiGo
24 Jul - 28 Jul	IndiGo
16 Jul - 22 Jul	IndiGo
23 Jul - 30 Jul	IndiGo
21 Jul - 28 Jul	IndiGo
24 Jul - 31 Jul	IndiGo
16 Jul - 21 Jul	IndiGo
30 Jul - 04 Aug	IndiGo
08 Jul - 17 Jul	IndiGo
18 Jul - 23 Jul	IndiGo
25 Jul - 01 Aug	IndiGo
09 Jul - 16 Jul	IndiGo
26 Jul - 02 Aug	IndiGo
25 Jul - 01 Aug	Singapore Airlines	direct
26 Jul - 02 Aug	Singapore Airlines	direct
30 Jul - 04 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 293€

Return flights