AirHint found the following cheapest return flights from Portland (PDX) to Guadalajara (GDL) in January 2026 (see full year).
Return flights
| 13 Jan - 21 Jan | Delta | ||
| 21 Jan - 27 Jan | Hawaiian Airlines | ||
| 13 Jan - 21 Jan | Frontier Airlines | direct |
Also check the deals for one-way flights from Portland to Guadalajara in January.
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