AirHint found the following cheapest return flights from Washington (DCA) to Toronto (YYZ) in October 2025 (see full year).

Return flights

24 Oct - 31 Oct	Air Canada
03 Oct - 03 Oct	Air Canada
04 Oct - 06 Oct	Air Canada
16 Oct - 19 Oct	Air Canada	direct
01 Oct - 05 Oct	Air Canada	direct
04 Oct - 17 Oct	Air Canada	direct
16 Oct - 21 Oct	Air Canada	direct
01 Oct - 04 Oct	Air Canada	direct
01 Oct - 06 Oct	Air Canada
13 Oct - 17 Oct	Air Canada
28 Oct - 03 Nov	Air Canada	direct
29 Oct - 02 Nov	Air Canada	direct
30 Oct - 03 Nov	Air Canada	direct

Also check the deals for one-way flights from Washington to Toronto in October.

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 Washington to Toronto in October from 167€

Return flights