AirHint found the following cheapest return flights from Portland (PDX) to Cancun (CUN) in March 2026 (see full year).
Return flights
| 03 Mar - 10 Mar | Aeromexico | ||
| 02 Mar - 06 Mar | Hawaiian Airlines | ||
| 23 Mar - 30 Mar | Volaris | ||
| 25 Mar - 05 Apr | Aeromexico | ||
| 20 Mar - 28 Mar | Frontier Airlines | ||
| 20 Mar - 27 Mar | Southwest Airlines |
Also check the deals for one-way flights from Portland to Cancun in March.
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