AirHint found the following cheapest return flights from Waterloo (YKF) to Calgary (YYC) in December 2025 (see full year).

Return flights

30 Dec - 08 Jan	WestJet	direct
30 Dec - 16 Jan	WestJet	direct
28 Dec - 06 Jan	Flair Airlines	direct
28 Dec - 01 Jan	Flair Airlines	direct
29 Dec - 30 Dec	WestJet	direct
29 Dec - 01 Jan	WestJet	direct
30 Dec - 31 Dec	WestJet	direct
29 Dec - 31 Dec	WestJet	direct
28 Dec - 04 Jan	Flair Airlines	direct
28 Dec - 03 Jan	Flair Airlines	direct
30 Dec - 04 Jan	WestJet	direct
29 Dec - 04 Jan	WestJet	direct
29 Dec - 03 Jan	WestJet	direct

Also check the deals for one-way flights from Waterloo to Calgary in December.

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 Waterloo to Calgary in December from 338€

Return flights