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

Return flights

23 Oct - 26 Oct	Spirit Airlines
23 Oct - 24 Oct	Allegiant Air
13 Oct - 20 Oct	Allegiant Air
01 Oct - 06 Oct	Spirit Airlines
12 Oct - 19 Oct	Allegiant Air
10 Oct - 12 Oct	Allegiant Air
01 Oct - 06 Oct	Air Canada	direct
11 Oct - 17 Oct	United
15 Oct - 23 Oct	United
11 Oct - 19 Oct	United

Also check the deals for one-way flights from Indianapolis 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 Indianapolis to Toronto in October from $231

Return flights