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

Return flights

11 Mar - 23 Mar	Korean Air
09 Mar - 18 Mar	Korean Air
10 Mar - 22 Mar	Korean Air
11 Mar - 22 Mar	Korean Air
31 Mar - 07 Apr	Korean Air
19 Mar - 31 Mar	Korean Air
31 Mar - 06 Apr	Korean Air
26 Mar - 14 Apr	Korean Air
31 Mar - 13 Apr	Korean Air
02 Mar - 16 Mar	Korean Air
03 Mar - 10 Mar	Korean Air
04 Mar - 29 Apr	Korean Air
04 Mar - 17 Mar	Korean Air
03 Mar - 19 Mar	Korean Air
08 Mar - 17 Mar	Korean Air
09 Mar - 12 Apr	Korean Air
26 Mar - 07 Apr	Korean Air
26 Mar - 06 Apr	Korean Air
29 Mar - 06 Apr	Korean Air
26 Mar - 01 Apr	Korean Air

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

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 March from $630

Return flights