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

Return flights

27 Sep - 04 Oct	WestJet
23 Sep - 30 Sep	WestJet
29 Sep - 15 Oct	WestJet
30 Sep - 07 Oct	WestJet
29 Sep - 06 Oct	WestJet
23 Sep - 07 Oct	WestJet
30 Sep - 15 Oct	WestJet
23 Sep - 15 Oct	WestJet
30 Sep - 10 Oct	WestJet
23 Sep - 10 Oct	WestJet
29 Sep - 10 Oct	WestJet
02 Sep - 10 Sep	WestJet	direct
02 Sep - 17 Sep	WestJet	direct
09 Sep - 16 Sep	WestJet
09 Sep - 30 Sep	WestJet
15 Sep - 30 Sep	WestJet
09 Sep - 23 Sep	WestJet
02 Sep - 20 Sep	WestJet
02 Sep - 09 Sep	WestJet
02 Sep - 23 Sep	WestJet

Also check the deals for one-way flights from Calgary to Barcelona 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.

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Cheapest return flights from Calgary to Barcelona in September from 418€

Return flights