American Airlines is the most reliable airline on the CLT to SJU route with a 77% on-time rate, compared to Frontier Airlines at 48%. Based on 3,446 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: CLT to SJU
Charlotte to San Juan — airline reliability comparison
On-Time Rate by Airline
American Airlines77%
Frontier Airlines48%
CLT to SJU Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| American AirlinesAABest | 77% | 0.6% | 69m | 3,446 |
| Frontier AirlinesF9Worst | 48% | 3.6% | 121m | 189 |
Route Overview
76%
Overall On-Time
71m
Avg Delay
0.8%
Cancel Rate
3,692
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.