Most delayed airlines in Puerto Rico
Ranked by on-time arrival rate on Puerto Rico routes, worst first. This is each airline's record on these routes only — not its record everywhere. January 2025 – August 2026.
Source: the US Bureau of Transportation Statistics.
| # | Airline | Flights | On time |
|---|---|---|---|
| 1 | Spirit Airlines | 5,323 | 68% |
| 2 | Frontier Airlines | 10,908 | 69.5% |
| 3 | JetBlue Airways | 27,146 | 74.2% |
| 4 | Southwest Airlines | 7,810 | 74.2% |
| 5 | American Airlines | 9,795 | 77.2% |
| 6 | United Airlines | 7,913 | 80.4% |
| 7 | Delta Air Lines | 7,271 | 82.3% |