Cheapest return flights from Boston to Calgary in May from $348

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

28 May - 01 Jun Spirit Airlines
26 May - 30 May American Airlines
21 May - 30 May Porter Airlines (Canada) Ltd
23 May - 25 May United
16 May - 30 May United
16 May - 23 May United
23 May - 26 May Alaska Airlines
14 May - 22 May Porter Airlines (Canada) Ltd
14 May - 20 May Porter Airlines (Canada) Ltd
13 May - 22 May Porter Airlines (Canada) Ltd
14 May - 21 May Porter Airlines (Canada) Ltd
28 May - 01 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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