AirHint found the following cheapest one-way flights from Spokane (GEG) to Porto (OPO) in May 2026 (see full year).
One-Way flights
| 07 May | Iberia | ||
| 06 May | British Airways | ||
| 01 May | Alaska Airlines | ||
| 23 May | Iberia |
Also check the deals for return flights from Spokane to Porto in May.
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