AirHint found the following cheapest return flights from Tokyo (HND) to Singapore (SIN) in August 2025 (see full year).

Return flights

27 Aug - 02 Sep	China Eastern
31 Aug - 03 Sep	Skymark Airlines
27 Aug - 01 Sep	AirAsia X
27 Aug - 17 Sep	AirAsia X
26 Aug - 01 Sep	AirAsia X
29 Aug - 31 Aug	StarFlyer
19 Aug - 26 Aug	Tigerair Taiwan
20 Aug - 27 Aug	Skymark Airlines
20 Aug - 22 Aug	Skymark Airlines
20 Aug - 30 Aug	Skymark Airlines
17 Aug - 24 Aug	Japan Airlines
27 Aug - 29 Aug	Cathay Pacific
27 Aug - 16 Sep	AirAsia X
27 Aug - 31 Aug	AirAsia X
27 Aug - 15 Sep	AirAsia X
26 Aug - 16 Sep	AirAsia X
22 Aug - 29 Aug	China Southern
26 Aug - 31 Aug	AirAsia X
26 Aug - 15 Sep	AirAsia X
30 Aug - 06 Sep	StarFlyer

Also check the deals for one-way flights from Tokyo to Singapore in August.

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 Tokyo to Singapore in August from 274€

Return flights