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

Return flights

23 Sep - 27 Sep	WestJet	direct
05 Sep - 08 Sep	Air Canada
18 Sep - 23 Sep	Air Canada
25 Sep - 28 Sep	Frontier Airlines
09 Sep - 14 Sep	WestJet	direct
13 Sep - 20 Sep	WestJet	direct
09 Sep - 16 Sep	WestJet	direct
07 Sep - 13 Sep	WestJet	direct
26 Sep - 28 Sep	WestJet	direct
26 Sep - 29 Sep	WestJet	direct

Also check the deals for one-way flights from Houston to Calgary in September.

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.

Book a cheap hotel in Calgary

Cheap car rent in Calgary

Cheapest return flights from Houston to Calgary in September from 179€

Return flights