AirHint found the following cheapest return flights from Atlanta (ATL) to Calgary (YYC) in August 2025 (see full year).

Return flights

05 Aug - 10 Sep	WestJet
13 Aug - 18 Aug	WestJet
03 Aug - 06 Aug	WestJet
17 Aug - 24 Aug	WestJet
05 Aug - 10 Sep	WestJet	direct
14 Aug - 17 Aug	WestJet
28 Aug - 06 Sep	WestJet
17 Aug - 24 Aug	WestJet	direct
18 Aug - 22 Aug	WestJet	direct
11 Aug - 13 Aug	WestJet	direct
06 Aug - 09 Aug	WestJet
05 Aug - 09 Aug	WestJet
22 Aug - 01 Sep	WestJet
07 Aug - 13 Aug	Delta

Also check the deals for one-way flights from Atlanta to Calgary 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 Atlanta to Calgary in August from 159€

Return flights