Cheapest return flights from Boston to Toronto in December from $239

AirHint found the following cheapest return flights from Boston (BOS) to Toronto (YTZ) in December 2025 (see full year).

Return flights

04 Dec - 09 Dec Porter Airlines (Canada) Ltd
02 Dec - 09 Dec Porter Airlines (Canada) Ltd direct
12 Dec - 07 Jan Porter Airlines (Canada) Ltd
12 Dec - 09 Jan Porter Airlines (Canada) Ltd
01 Dec - 05 Dec Porter Airlines (Canada) Ltd
12 Dec - 10 Jan Porter Airlines (Canada) Ltd
05 Dec - 05 Dec Porter Airlines (Canada) Ltd direct
04 Dec - 09 Dec Porter Airlines (Canada) Ltd direct
01 Dec - 05 Dec Porter Airlines (Canada) Ltd direct
12 Dec - 09 Jan Porter Airlines (Canada) Ltd direct
02 Dec - 02 Dec Porter Airlines (Canada) Ltd direct
02 Dec - 11 Dec Porter Airlines (Canada) Ltd
02 Dec - 12 Dec Porter Airlines (Canada) Ltd
07 Dec - 11 Dec Porter Airlines (Canada) Ltd
29 Dec - 08 Jan Porter Airlines (Canada) Ltd direct
16 Dec - 15 Jan Porter Airlines (Canada) Ltd
15 Dec - 16 Jan Porter Airlines (Canada) Ltd
15 Dec - 14 Jan Porter Airlines (Canada) Ltd
13 Dec - 09 Jan Porter Airlines (Canada) Ltd direct
15 Dec - 15 Jan Porter Airlines (Canada) Ltd direct

Also check the deals for one-way flights from Boston to Toronto in December.

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