Airports › San Juan (SJU) › May 2025
Airport month · May 2025
Luis Munoz Marin 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 3,067 domestic departures from Luis Munoz Marin International (SJU). 82.1% left less than 15 minutes late and 81.2% reached their destination on time; 0.1% were cancelled.
Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so SJU departures were 5.4 points above the national departure figure.
A year earlier, in May 2024, the airport had 3,104 departures with 75.1% leaving on time: a change of +7.0 points, with flights down 1%.
Flights arriving at SJU that month were on time 76.8% of the time (3,071 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 50%, air carrier 29% and national aviation system 18%.
- On time 81.2%
- Arrived 15+ minutes late 18.1%
- Cancelled 0.1%
- Diverted 0.6%
May 2025 against a year earlier, the airport's year and the nation
| Measure | May 2025 | May 2024 | SJU, 12 months to Jul 2026 | All reported flights, May 2025 |
|---|---|---|---|---|
| Departed on time | 82.1% | 75.1% | 74.5% | 76.7% |
| Arrived on time | 81.2% | 71.7% | 75.6% | 75.4% |
| Cancelled | 0.1% | 0.9% | 2.0% | 1.0% |
| Average departure delay (late minutes only) | 13.2 min | 24.7 min | 19.6 min | 17.5 min |
| Scheduled departures a day | 102 | 104 | 97 | 20,188 |
| Scheduled departures | 3,067 | 3,104 | 35,302 | 605,648 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| B6 JetBlue Airways | 959 | 31% | 82.8% | 4.1 min | 0.0% |
| F9 Frontier Airlines | 497 | 16% | 72.4% | 10.4 min | 0.2% |
| AA American Airlines | 405 | 13% | 78.8% | 2.9 min | 0.0% |
| WN Southwest Airlines | 331 | 11% | 88.5% | -4.4 min | 0.0% |
| DL Delta Air Lines | 311 | 10% | 89.4% | -7.6 min | 0.0% |
| UA United Airlines | 291 | 9% | 78.0% | 2.5 min | 1.0% |
| NK Spirit Airlines | 273 | 9% | 80.6% | 1.8 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SJU–MCO | San Juan to Orlando | 522 | 84.3% | 3.9 min | 0.0% |
| SJU–JFK | San Juan to New York | 335 | 84.8% | -4.9 min | 0.0% |
| SJU–MIA | San Juan to Miami | 209 | 79.9% | 0.0 min | 0.0% |
| SJU–EWR | San Juan to Newark | 207 | 69.1% | 10.9 min | 1.4% |
| SJU–ATL | San Juan to Atlanta | 200 | 84.5% | -2.6 min | 0.5% |
| SJU–FLL | San Juan to Fort Lauderdale | 184 | 87.5% | -1.0 min | 0.0% |
| SJU–PHL | San Juan to Philadelphia | 165 | 73.9% | 13.6 min | 0.0% |
| SJU–BOS | San Juan to Boston | 156 | 77.6% | 14.4 min | 0.0% |
| SJU–TPA | San Juan to Tampa | 124 | 84.7% | 1.1 min | 0.0% |
| SJU–ORD | San Juan to Chicago | 116 | 84.5% | -2.2 min | 0.0% |
| SJU–BWI | San Juan to Baltimore | 114 | 79.8% | 5.1 min | 0.0% |
| SJU–CLT | San Juan to Charlotte | 98 | 83.7% | -1.9 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left SJU on time in May 2025?
82.1% of 3,067 scheduled domestic departures left less than 15 minutes late, and 81.2% 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, 75.1% of 3,104 departures left on time and 0.9% were cancelled, against 82.1% and 0.1% 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 SJU · methodology · corrections.