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

Return flights

05 Aug - 09 Sep	WestJet	direct
13 Aug - 22 Aug	WestJet	direct
19 Aug - 26 Aug	WestJet	direct
19 Aug - 24 Aug	WestJet	direct
24 Aug - 10 Sep	WestJet	direct
30 Aug - 06 Sep	WestJet	direct
07 Aug - 28 Sep	WestJet	direct
04 Aug - 11 Aug	WestJet	direct
06 Aug - 12 Aug	WestJet	direct
29 Aug - 02 Sep	WestJet	direct
15 Aug - 18 Aug	WestJet	direct
28 Aug - 31 Aug	WestJet	direct
05 Aug - 08 Aug	WestJet
29 Aug - 01 Sep	WestJet	direct
07 Aug - 11 Aug	WestJet	direct
17 Aug - 22 Aug	WestJet	direct
28 Aug - 01 Sep	WestJet	direct

Also check the deals for one-way flights from Houston 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 Houston to Calgary in August from $240

Return flights