Cheapest return flights from Boston to Calgary in May from $167

Best time to book flights for Boston (BOS) to Calgary (YYC) flights at AirHint

AirHint found the following cheapest return flights from Boston (BOS) to Calgary (YYC) in May 2025 (see full year).

Return flights

14 May - 18 May WestJet direct
01 May - 03 May Air Canada
02 May - 08 May United
28 May - 03 Jun Spirit Airlines
01 May - 08 May Spirit Airlines
29 May - 03 Jun United
30 May - 06 Jun Spirit Airlines
27 May - 31 May Spirit Airlines
30 May - 07 Jun Spirit Airlines
21 May - 28 May Spirit Airlines
21 May - 30 May Porter Airlines (Canada) Ltd
23 May - 26 May Porter Airlines (Canada) Ltd
23 May - 27 May Porter Airlines (Canada) Ltd
23 May - 26 May WestJet direct
30 May - 06 Jun WestJet direct

Also check the deals for one-way flights from Boston to Calgary in May.

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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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