Airports › Portland (PDX) › May 2025
Airport month · May 2025
Portland International in May 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In May 2025, reporting carriers scheduled 5,201 domestic departures from Portland International (PDX). 86.2% left less than 15 minutes late and 83.2% reached their destination on time; 0.3% were cancelled.
Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so PDX departures were 9.5 points above the national departure figure.
A year earlier, in May 2024, the airport had 5,114 departures with 81.1% leaving on time: a change of +5.1 points, with flights up 2%.
Flights arriving at PDX that month were on time 81.7% of the time (5,197 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 36%, late-arriving aircraft 34% and air carrier 29%.
- On time 83.2%
- Arrived 15+ minutes late 16.2%
- Cancelled 0.3%
- Diverted 0.3%
May 2025 against a year earlier, the airport's year and the nation
| Measure | May 2025 | May 2024 | PDX, 12 months to Jul 2026 | All reported flights, May 2025 |
|---|---|---|---|---|
| Departed on time | 86.2% | 81.1% | 82.7% | 76.7% |
| Arrived on time | 83.2% | 81.0% | 82.0% | 75.4% |
| Cancelled | 0.3% | 0.8% | 0.7% | 1.0% |
| Average departure delay (late minutes only) | 9.1 min | 13.5 min | 11.6 min | 17.5 min |
| Scheduled departures a day | 173 | 171 | 173 | 20,188 |
| Scheduled departures | 5,201 | 5,114 | 63,282 | 605,648 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| AS Alaska Airlines | 1,661 | 32% | 80.5% | 3.9 min | 0.4% |
| OO SkyWest Airlines | 936 | 18% | 86.1% | 1.1 min | 0.3% |
| WN Southwest Airlines | 717 | 14% | 82.8% | 4.5 min | 0.3% |
| DL Delta Air Lines | 637 | 12% | 91.7% | -7.9 min | 0.0% |
| UA United Airlines | 566 | 11% | 82.3% | 3.4 min | 0.4% |
| AA American Airlines | 376 | 7% | 76.6% | 6.7 min | 0.8% |
| F9 Frontier Airlines | 102 | 2% | 75.5% | 7.1 min | 2.0% |
| NK Spirit Airlines | 64 | 1% | 95.3% | -5.7 min | 0.0% |
| HA Hawaiian Airlines | 62 | 1% | 95.2% | -10.4 min | 0.0% |
| G4 Allegiant Air | 48 | 1% | 81.3% | 10.5 min | 0.0% |
| B6 JetBlue Airways | 31 | 1% | 54.8% | 17.9 min | 0.0% |
| MQ Envoy Air | 1 | 0% | 100.0% | -4.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| PDX–LAX | Portland to Los Angeles | 409 | 91.2% | -4.6 min | 0.5% |
| PDX–SEA | Portland to Seattle | 405 | 83.5% | -2.0 min | 0.2% |
| PDX–DEN | Portland to Denver | 402 | 74.1% | 11.9 min | 0.7% |
| PDX–PHX | Portland to Phoenix | 340 | 82.6% | 4.4 min | 0.6% |
| PDX–LAS | Portland to Las Vegas | 308 | 88.6% | 1.3 min | 0.3% |
| PDX–SFO | Portland to San Francisco | 293 | 85.7% | 2.2 min | 0.3% |
| PDX–ORD | Portland to Chicago | 254 | 77.6% | 5.8 min | 0.0% |
| PDX–SLC | Portland to Salt Lake City | 220 | 95.0% | -8.1 min | 0.0% |
| PDX–DFW | Portland to Dallas/Fort Worth | 202 | 69.8% | 8.8 min | 1.0% |
| PDX–SMF | Portland to Sacramento | 167 | 83.8% | 1.4 min | 0.6% |
| PDX–SAN | Portland to San Diego | 161 | 91.3% | -2.7 min | 0.0% |
| PDX–ATL | Portland to Atlanta | 144 | 81.3% | -2.1 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left PDX on time in May 2025?
86.2% of 5,201 scheduled domestic departures left less than 15 minutes late, and 83.2% reached their destination on time. The national figures that month were 76.7% and 75.4%.
How does that compare with a year earlier?
In May 2024, 81.1% of 5,114 departures left on time and 0.8% were cancelled, against 86.2% and 0.3% in May 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for PDX · methodology · corrections.