Best time to fly to Portland
The most popular months for travelers to fly to Portland are January, March, and April, when peak temperatures in Portland can reach up to 50.5°F in April. If you prefer quieter travel, consider September, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 65.5°F. For better deals, May usually offers the lowest average one-way fare around $249, roughly 11% cheaper than the yearly average. Looking for additional cheaper months to fly? August, July, and September offer average one-way fares of around $256, making them good options for flexible travelers.
Month | Temperature | Precipitation | Cloudiness | Demand | Average one-way Fare |
| January | 26.8°F (-2.9°C) | Light Rain | Mostly Cloudy | Moderately High | $302 |
| February | 29.5°F (-1.4°C) | Light Rain | Mostly Cloudy | Average | $294 |
| March | 40.5°F (4.7°C) | Light Rain | Mostly Cloudy | Moderately High | $315 |
| April | 50.5°F (10.3°C) | Light Rain | Mostly Cloudy | Moderately High | $301 |
| May | 62.1°F (16.7°C) | Light Rain | Mostly Sunny | Average | $249 |
| June | 70.0°F (21.1°C) | Light Rain | Mostly Sunny | Average | $276 |
| July | 73.0°F (22.8°C) | Light Rain | Mostly Sunny | Average | $259 |
| August | 71.2°F (21.8°C) | Light Rain | Mostly Sunny | Average | $251 |
| September | 65.5°F (18.6°C) | Light Rain | Mostly Sunny | Moderately Low | $260 |
| October | 54.3°F (12.4°C) | Light Rain | Mostly Sunny | Average | $279 |
| November | 41.9°F (5.5°C) | Light Rain | Mostly Sunny | Moderately Low | $282 |
| December | 33.6°F (0.9°C) | Light Rain | Mostly Cloudy | Moderately Low | $292 |
*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.