Cheapest return flights from Boston to Calgary in May from $164

AirHint found the following cheapest return flights from Boston (BOS) to Calgary (YYC) in May 2026 (see full year).

Return flights

15 May - 22 May WestJet direct
04 May - 11 May WestJet direct
01 May - 04 May WestJet direct
09 May - 20 May Porter Airlines (Canada) Ltd
09 May - 11 May Porter Airlines (Canada) Ltd
09 May - 27 May Porter Airlines (Canada) Ltd
01 May - 06 May Porter Airlines (Canada) Ltd
01 May - 20 May Porter Airlines (Canada) Ltd
01 May - 05 May Porter Airlines (Canada) Ltd
05 May - 06 May Porter Airlines (Canada) Ltd
20 May - 03 Jun Porter Airlines (Canada) Ltd
23 May - 03 Jun Porter Airlines (Canada) Ltd
29 May - 03 Jun Porter Airlines (Canada) Ltd
20 May - 06 Jun Porter Airlines (Canada) Ltd
23 May - 06 Jun Porter Airlines (Canada) Ltd
20 May - 08 Jun Porter Airlines (Canada) Ltd
23 May - 08 Jun Porter Airlines (Canada) Ltd
29 May - 06 Jun Porter Airlines (Canada) Ltd
29 May - 08 Jun Porter Airlines (Canada) Ltd
29 May - 14 Jun Porter Airlines (Canada) Ltd

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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