Airports › Puerto Rico
Airport · 12 months to July 2026
Luis Munoz Marin International: delays and on-time record
San Juan, Puerto Rico
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. Data through July 2026; this is a monthly history, not live airport status.
Reporting carriers scheduled 35,302 domestic departures from Luis Munoz Marin International (SJU), San Juan, in the 12 months to July 2026: about 97 a day to 38 destinations.
74.5% of those flights left the gate less than 15 minutes late, 1.6 points below the national departure figure of 76.1%. Flights arriving at SJU were on time 69.9% of the time, 6.1 points below the national arrival figure of 76.0%.
2.0% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 19.6 min.
JetBlue Airways is the largest reporting carrier at SJU with 34% of departures. Among carriers with at least 353 departures, Delta Air Lines had the highest on-time arrival share for its SJU departures (85.7%) and Spirit Airlines the lowest (66.6%).
On-time departures are down 3.2 points on the previous 12 months (77.7%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving SJU, late-arriving aircraft 52%, air carrier 34% and national aviation system 13%.
- On time 75.6%
- Arrived 15+ minutes late 22.0%
- Cancelled 2.0%
- Diverted 0.4%
As origin and as destination, against the nation
| Measure | Departures from SJU | Arrivals at SJU | All reported flights | SJU departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 74.5% | 70.5% | 76.1% | 77.7% |
| Arrived on time | 75.6% | 69.9% | 76.0% | 77.9% |
| Cancelled | 2.0% | 1.9% | 1.8% | 1.0% |
| Diverted | 0.4% | 0.2% | 0.3% | 0.4% |
| Average departure delay (late minutes only) | 19.6 min | 20.9 min | 17.4 min | 17.8 min |
| Arrival delay minutes per 100 flights | 1,806 | 2,089 | 1,684 | 1,700 |
| Scheduled flights | 35,302 | 35,303 | 7,043,858 | 36,237 |
12 months to July 2026. The first column follows flights that left SJU; the second follows flights that landed there. Year on year, on-time departures moved −3.2 pts.
Airlines at SJU
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| B6 JetBlue Airways | 11,960 | 34% | 72.1% | 12.9 min | 2.3% |
| AA American Airlines | 4,961 | 14% | 79.1% | 6.6 min | 1.5% |
| F9 Frontier Airlines | 4,915 | 14% | 69.8% | 17.0 min | 2.4% |
| WN Southwest Airlines | 3,868 | 11% | 78.3% | 6.6 min | 0.8% |
| DL Delta Air Lines | 3,623 | 10% | 85.7% | -3.1 min | 1.6% |
| UA United Airlines | 3,614 | 10% | 82.7% | -0.8 min | 1.2% |
| NK Spirit Airlines | 2,361 | 7% | 66.6% | 15.0 min | 4.6% |
Departures from SJU by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 75.6%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from SJU
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SJU–MCO | San Juan to Orlando | 6,073 | 76.8% | 10.8 min | 1.1% |
| SJU–JFK | San Juan to New York | 3,596 | 75.7% | 7.6 min | 3.2% |
| SJU–MIA | San Juan to Miami | 2,643 | 77.3% | 11.2 min | 1.0% |
| SJU–FLL | San Juan to Fort Lauderdale | 2,336 | 73.4% | 12.8 min | 1.5% |
| SJU–ATL | San Juan to Atlanta | 2,095 | 79.8% | 5.1 min | 1.4% |
| SJU–EWR | San Juan to Newark | 2,084 | 72.2% | 13.5 min | 3.1% |
| SJU–BOS | San Juan to Boston | 1,961 | 68.5% | 13.3 min | 3.1% |
| SJU–PHL | San Juan to Philadelphia | 1,934 | 68.3% | 14.9 min | 3.4% |
| SJU–TPA | San Juan to Tampa | 1,519 | 74.7% | 11.5 min | 1.7% |
| SJU–ORD | San Juan to Chicago | 1,394 | 75.6% | 4.3 min | 2.4% |
| SJU–BWI | San Juan to Baltimore | 1,162 | 77.2% | 7.2 min | 2.5% |
| SJU–CLT | San Juan to Charlotte | 1,081 | 83.7% | -0.2 min | 1.7% |
| SJU–DFW | San Juan to Dallas/Fort Worth | 987 | 75.8% | 3.6 min | 2.8% |
| SJU–BDL | San Juan to Hartford | 966 | 68.0% | 14.9 min | 2.3% |
| SJU–IAH | San Juan to Houston | 930 | 87.0% | -8.6 min | 0.5% |
| SJU–IAD | San Juan to Washington | 706 | 86.5% | -2.2 min | 0.7% |
| SJU–RDU | San Juan to Raleigh/Durham | 467 | 80.7% | 4.5 min | 1.7% |
| SJU–DCA | San Juan to Washington | 364 | 69.5% | 19.3 min | 1.9% |
| SJU–HPN | San Juan to White Plains | 359 | 66.6% | 20.6 min | 4.2% |
| SJU–DTW | San Juan to Detroit | 357 | 80.4% | -0.7 min | 1.7% |
| SJU–STT | San Juan to Charlotte Amalie | 357 | 69.7% | 17.8 min | 0.6% |
| SJU–DEN | San Juan to Denver | 333 | 85.9% | -4.3 min | 0.3% |
| SJU–STX | San Juan to Christiansted | 317 | 73.8% | 7.2 min | 0.9% |
| SJU–PVD | San Juan to Providence | 299 | 67.9% | 12.4 min | 1.7% |
| SJU–JAX | San Juan to Jacksonville | 261 | 77.0% | 9.2 min | 2.3% |
| SJU–MSP | San Juan to Minneapolis | 153 | 78.4% | -4.5 min | 3.9% |
The 26 busiest of 38 routes with reported flights. Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 706 departures, 7 am to 8 am had the highest on-time share (91.2% of 3,143 flights) and 8 pm to 9 pm the lowest (54.0% of 1,059).
Delay causes
Cancellations by reported reason (704 in the period): air carrier 30%, weather 43%, national aviation system 24%, security 3%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for SJU on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave SJU on time?
74.5% of the 35,302 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 2.0% were cancelled.
How often do flights arrive at SJU on time?
69.9% of 35,303 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at SJU?
Counting departures from SJU and whether they reached their destination on time, Delta Air Lines had the highest share (85.7% of 3,623 flights), then United Airlines (82.7%) and American Airlines (79.1%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at SJU?
For departures from SJU that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: late-arriving aircraft 52%, air carrier 34%, national aviation system 13%, extreme weather 1%, security 0%.
What time of day has the highest on-time share at SJU?
Departures scheduled from 7 am to 8 am local time left on time 91.2% of the time, the highest of any hour with enough flights to compare; 8 pm to 9 pm was lowest at 54.0%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 74.5%, down 3.2 points on the previous 12 months (77.7%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at SJU?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.