Route
JAX → SJU
Jacksonville International Airport Luis Munoz Marin International Airport
1,288 miles
Return route SJU → JAX →
How punctual is this route?
- On-time arrivals
- 70.4%
- Less than 15 minutes late
- Cancelled
- 3.3%
- Of scheduled flights
- Average delay when late
- 91 min
- Flights arriving 15+ minutes late
- Flights tracked
- 304
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 65%
- Airline (crew, maintenance, cleaning) 29%
- Air traffic control & airport 4%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Nov 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| November 2025 | 62.5% | 8 |
| December 2025 | 65.0% | 21 |
| January 2026 | 60.0% | 12 |
| March 2026 | 70.0% | 11 |
| April 2026 | 68.2% | 23 |
| May 2026 | 88.5% | 52 |
| June 2026 | 74.6% | 59 |
| July 2026 | 61.7% | 62 |
| August 2026 | 64.2% | 56 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Frontier Airlines | 156 | 74.5% | 4.5% | 118 min |
| JetBlue Airways | 148 | 66.2% | 2.0% | 70 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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