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

Return flights

22 Aug - 26 Aug	Spirit Airlines
09 Aug - 12 Aug	Spirit Airlines
15 Aug - 18 Aug	Spirit Airlines
12 Aug - 16 Aug	Spirit Airlines
14 Aug - 17 Aug	Allegiant Air
30 Aug - 02 Sep	Spirit Airlines
07 Aug - 16 Aug	Allegiant Air
29 Aug - 02 Sep	Spirit Airlines
01 Aug - 05 Aug	Allegiant Air
31 Aug - 03 Sep	Spirit Airlines
29 Aug - 01 Sep	Spirit Airlines
01 Aug - 03 Aug	Allegiant Air
03 Aug - 06 Aug	Delta
31 Aug - 03 Sep	Air Canada	direct
01 Aug - 05 Aug	Air Canada	direct
30 Aug - 02 Sep	Air Canada	direct
29 Aug - 02 Sep	Air Canada	direct

Also check the deals for one-way flights from Indianapolis to Toronto in August.

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 August from $274

Return flights