JetBlue Airways is the most reliable airline on the SJU to JAX route with a 81% on-time rate, compared to Frontier Airlines at 77%. Based on 117 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SJU to JAX
San Juan to Jacksonville — airline reliability comparison
On-Time Rate by Airline
JetBlue Airways81%
Frontier Airlines77%
SJU to JAX Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| JetBlue AirwaysB6Best | 81% | 2.5% | 73m | 117 |
| Frontier AirlinesF9Worst | 77% | 2.3% | 85m | 742 |
Route Overview
78%
Overall On-Time
81m
Avg Delay
2.1%
Cancel Rate
865
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.