is the most reliable airline on the SJU to MIA route with a 85% on-time rate, compared to American Airlines at 78%. Based on 13 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SJU to MIA
San Juan to Miami — airline reliability comparison
On-Time Rate by Airline
85%
Spirit Airlines80%
Frontier Airlines78%
American Airlines78%
SJU to MIA Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| MQBest | 85% | 0.0% | 145m | 13 |
| Spirit AirlinesNK | 80% | 1.1% | 82m | 1,141 |
| Frontier AirlinesF9 | 78% | 1.8% | 92m | 1,728 |
| American AirlinesAAWorst | 78% | 0.4% | 89m | 7,022 |
Route Overview
78%
Overall On-Time
90m
Avg Delay
0.8%
Cancel Rate
9,918
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.