AirHint found the following cheapest one-way flights from Calgary (YYC) to Seattle (SEA) in August 2026 (see full year).
One-Way flights
| 30 Aug | Alaska Airlines | direct | |
| 29 Aug | Air Canada | ||
| 03 Aug | Air Canada | ||
| 03 Aug | Alaska Airlines | direct | |
| 29 Aug | Delta | direct |
Also check the deals for return flights from Calgary to Seattle in August.
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