AirHint found the following cheapest return flights from Chicago (ORD) to Calgary (YYC) in July 2025 (see full year).

Return flights

22 Jul - 29 Jul	WestJet	direct
01 Jul - 07 Jul	WestJet	direct
29 Jul - 18 Aug	WestJet	direct
14 Jul - 23 Jul	United	direct
31 Jul - 04 Aug	WestJet
31 Jul - 05 Aug	WestJet
17 Jul - 21 Jul	WestJet
01 Jul - 08 Jul	WestJet
31 Jul - 06 Aug	WestJet
04 Jul - 07 Jul	Spirit Airlines
15 Jul - 22 Jul	WestJet	direct
25 Jul - 29 Jul	Spirit Airlines
14 Jul - 16 Jul	WestJet
28 Jul - 31 Jul	WestJet
29 Jul - 05 Aug	American Airlines	direct
31 Jul - 05 Aug	WestJet	direct
31 Jul - 06 Aug	United	direct
30 Jul - 06 Aug	American Airlines	direct
27 Jul - 01 Aug	Delta
31 Jul - 03 Aug	WestJet

Also check the deals for one-way flights from Chicago to Calgary in July.

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 Chicago to Calgary in July from $157

Return flights