AirHint found the following cheapest one-way flights from Portland (PDX) to San Jose (SJO) in March 2026 (see full year).
One-Way flights
| 16 Mar | United | ||
| 17 Mar | United | ||
| 02 Mar | United | ||
| 10 Mar | Alaska Airlines | ||
| 23 Mar | United | ||
| 15 Mar | United | ||
| 13 Mar | Delta | ||
| 12 Mar | Frontier Airlines |
Also check the deals for return flights from Portland to San Jose in March.
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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.
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