AirHint found the following cheapest return flights from Calgary (YYC) to Porto (OPO) in September 2026 (see full year).
Return flights
| 14 Sep - 21 Sep | Lufthansa | ||
| 18 Sep - 29 Sep | Air Canada | ||
| 04 Sep - 19 Sep | Air Canada |
Also check the deals for one-way flights from Calgary to Porto in September.
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