AirHint found the following cheapest return flights from Ontario (ONT) to Singapore (SIN) in May 2026 (see full year).

Return flights

13 May - 31 May	China Airlines
12 May - 23 May	China Airlines
01 May - 08 May	China Airlines
07 May - 15 May	China Airlines
09 May - 24 May	China Airlines
10 May - 24 May	China Airlines
11 May - 22 Jun	STARLUX Airlines
21 May - 04 Jun	China Airlines
15 May - 19 May	China Airlines
16 May - 24 May	China Airlines
23 May - 27 May	China Airlines
21 May - 07 Jun	Qatar Airways
17 May - 28 Jun	Qatar Airways

Also check the deals for one-way flights from Ontario to Singapore in May.

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 Ontario to Singapore in May from 926€

Return flights