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

Return flights

25 Oct - 01 Nov	Spirit Airlines
24 Oct - 07 Nov	Frontier Airlines
24 Oct - 31 Oct	Frontier Airlines
29 Oct - 04 Nov	Frontier Airlines
22 Oct - 26 Oct	Frontier Airlines
29 Oct - 02 Nov	Air Canada	direct
29 Oct - 04 Nov	Air Canada	direct
30 Oct - 04 Nov	Air Canada	direct
24 Oct - 07 Nov	Air Canada	direct
25 Oct - 01 Nov	Air Canada	direct
28 Oct - 28 Oct	WestJet
22 Oct - 22 Oct	Air Canada
22 Oct - 26 Oct	Air Canada	direct
24 Oct - 31 Oct	Air Canada	direct
22 Oct - 22 Oct	Air Canada	direct

Also check the deals for one-way flights from Philadelphia 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 Philadelphia to Toronto in October from 281€

Return flights