Cheapest one-way flights from Portland to Cancun in December from $424
AirHint found the following cheapest one-way flights from Portland (PDX) to Cancun (CUN) in December 2025 (see full year).
One-Way flights
| 18 Dec | United | ||
| 20 Dec | Southwest Airlines | ||
| 20 Dec | Alaska Airlines | direct |
Also check the deals for return flights from Portland to Cancun in December.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
