Airports › Philadelphia (PHL) › May 2025
Airport month · May 2025
Philadelphia 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 8,866 domestic departures from Philadelphia International (PHL). 73.0% left less than 15 minutes late and 68.9% reached their destination on time; 2.0% were cancelled.
Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so PHL departures were 3.7 points below the national departure figure.
A year earlier, in May 2024, the airport had 8,740 departures with 75.8% leaving on time: a change of −2.8 points, with flights up 1%.
Flights arriving at PHL that month were on time 69.7% of the time (8,864 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 28% and national aviation system 26%.
- On time 68.9%
- Arrived 15+ minutes late 28.8%
- Cancelled 2.0%
- Diverted 0.3%
May 2025 against a year earlier, the airport's year and the nation
| Measure | May 2025 | May 2024 | PHL, 12 months to Jul 2026 | All reported flights, May 2025 |
|---|---|---|---|---|
| Departed on time | 73.0% | 75.8% | 74.1% | 76.7% |
| Arrived on time | 68.9% | 73.2% | 73.4% | 75.4% |
| Cancelled | 2.0% | 0.9% | 2.7% | 1.0% |
| Average departure delay (late minutes only) | 21.2 min | 19.9 min | 20.2 min | 17.5 min |
| Scheduled departures a day | 296 | 291 | 276 | 20,188 |
| Scheduled departures | 8,866 | 8,740 | 100,793 | 605,648 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| AA American Airlines | 4,224 | 48% | 70.1% | 12.6 min | 1.9% |
| OH PSA Airlines | 1,442 | 16% | 61.2% | 26.8 min | 4.6% |
| F9 Frontier Airlines | 752 | 8% | 60.6% | 24.2 min | 0.9% |
| YX Republic Airline | 634 | 7% | 73.0% | 11.1 min | 1.9% |
| DL Delta Air Lines | 563 | 6% | 81.0% | 8.3 min | 0.4% |
| WN Southwest Airlines | 398 | 4% | 71.9% | 12.8 min | 0.5% |
| UA United Airlines | 356 | 4% | 77.2% | 8.4 min | 0.3% |
| NK Spirit Airlines | 345 | 4% | 66.1% | 22.0 min | 1.4% |
| B6 JetBlue Airways | 85 | 1% | 74.1% | 7.8 min | 0.0% |
| AS Alaska Airlines | 62 | 1% | 59.7% | 8.4 min | 0.0% |
| OO SkyWest Airlines | 5 | 0% | 60.0% | 13.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| PHL–MCO | Philadelphia to Orlando | 498 | 59.2% | 22.0 min | 1.2% |
| PHL–ATL | Philadelphia to Atlanta | 487 | 69.8% | 19.1 min | 0.6% |
| PHL–BOS | Philadelphia to Boston | 446 | 68.2% | 14.7 min | 1.1% |
| PHL–ORD | Philadelphia to Chicago | 414 | 71.0% | 18.6 min | 1.2% |
| PHL–CLT | Philadelphia to Charlotte | 337 | 69.7% | 15.5 min | 2.7% |
| PHL–DFW | Philadelphia to Dallas/Fort Worth | 294 | 63.6% | 17.0 min | 1.7% |
| PHL–MIA | Philadelphia to Miami | 277 | 69.7% | 12.2 min | 2.2% |
| PHL–DEN | Philadelphia to Denver | 259 | 69.9% | 15.3 min | 1.2% |
| PHL–DTW | Philadelphia to Detroit | 252 | 78.2% | 7.0 min | 1.6% |
| PHL–TPA | Philadelphia to Tampa | 234 | 64.1% | 12.9 min | 1.3% |
| PHL–RDU | Philadelphia to Raleigh/Durham | 232 | 72.4% | 17.1 min | 1.7% |
| PHL–LAX | Philadelphia to Los Angeles | 221 | 76.9% | 2.3 min | 0.5% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left PHL on time in May 2025?
73.0% of 8,866 scheduled domestic departures left less than 15 minutes late, and 68.9% 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, 75.8% of 8,740 departures left on time and 0.9% were cancelled, against 73.0% and 2.0% 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 PHL · methodology · corrections.