Which departure time was most reliable for BWI to SJU?
Among qualifying BWI-to-SJU departure window results, Early morning had the highest on-time rate: 76.0% of 450 flights. Afternoon was lowest at 57.0% across 121 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 450 | 76.0% | 11.1% | 2.7% |
| Late morning | 136 | 64.7% | 25.7% | 4.4% |
| Afternoon | 121 | 57.0% | 29.8% | 3.3% |
| Evening | 466 | 57.1% | 27.3% | 1.7% |
Which weekday was most reliable for BWI to SJU?
Among qualifying BWI-to-SJU weekday results, Wednesday had the highest on-time rate: 78.1% of 146 flights. Sunday was lowest at 57.4% across 183 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 172 | 58.1% | 25.0% | 4.7% |
| Tuesday | 149 | 71.1% | 16.8% | 2.7% |
| Wednesday | 146 | 78.1% | 15.1% | 0.7% |
| Thursday | 171 | 62.6% | 25.1% | 0.6% |
| Friday | 171 | 63.7% | 26.3% | 1.2% |
| Saturday | 191 | 66.5% | 18.8% | 4.2% |
| Sunday | 183 | 57.4% | 22.4% | 3.3% |
Which airline was most reliable for BWI to SJU?
Among qualifying BWI-to-SJU airline results, Southwest Airlines had the highest on-time rate: 67.4% of 821 flights. Frontier Airlines was lowest at 49.0% across 157 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 821 | 67.4% | 20.0% | 0.9% |
| Spirit Airlines | 205 | 67.3% | 17.1% | 5.9% |
| Frontier Airlines | 157 | 49.0% | 35.7% | 7.0% |
Which month was most reliable for BWI to SJU?
Among qualifying BWI-to-SJU month results, September 2025 had the highest on-time rate: 77.1% of 70 flights. July 2025 was lowest at 53.9% across 141 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 141 | 53.9% | 28.4% | 3.5% |
| August 2025 | 103 | 58.3% | 34.0% | 1.0% |
| September 2025 | 70 | 77.1% | 11.4% | 0.0% |
| October 2025 | 61 | 73.8% | 18.0% | 0.0% |
| November 2025 | 75 | 69.3% | 16.0% | 1.3% |
| December 2025 | 115 | 60.9% | 25.2% | 0.9% |
| January 2026 | 108 | 61.1% | 16.7% | 11.1% |
| February 2026 | 91 | 64.8% | 23.1% | 4.4% |
| March 2026 | 109 | 68.8% | 19.3% | 3.7% |
| April 2026 | 111 | 73.0% | 15.3% | 0.9% |
| May 2026 | 90 | 70.0% | 16.7% | 0.0% |
| June 2026 | 109 | 61.5% | 25.7% | 0.9% |
What drove BWI to SJU delay minutes?
Airline was the largest recorded BWI-to-SJU delay category, accounting for 36.9% of 25,964 BTS-attributed delay minutes during July 2025–June 2026.
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