AirHint found the following cheapest return flights from Chicago (ORD) to Toronto (YYZ) in March 2026 (see full year).

Return flights

27 Mar - 08 Apr	WestJet
13 Mar - 16 Mar	Spirit Airlines
01 Mar - 06 Mar	WestJet
07 Mar - 10 Mar	WestJet
27 Mar - 13 Apr	WestJet
26 Mar - 08 Apr	WestJet
23 Mar - 25 Mar	WestJet
21 Mar - 24 Mar	WestJet
27 Mar - 08 Apr	American Airlines	direct
26 Mar - 08 Apr	American Airlines	direct
13 Mar - 16 Mar	Air Canada	direct
01 Mar - 06 Mar	American Airlines	direct
12 Mar - 19 Mar	Air Canada	direct
13 Mar - 20 Mar	Air Canada	direct
15 Mar - 22 Mar	Air Canada	direct
27 Mar - 13 Apr	United	direct

Also check the deals for one-way flights from Chicago to Toronto 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 Chicago to Toronto in March from $290

Return flights