Cheapest return flights from Calgary to Boston in September from $121

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

Return flights

30 Sep - 06 Oct WestJet direct
23 Sep - 29 Sep WestJet direct

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

Skyscanner

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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