JetBlue Airways is the most reliable airline on the SJU to RDU route with a 77% on-time rate, compared to Frontier Airlines at 75%. Based on 1,082 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SJU to RDU
San Juan to Raleigh — airline reliability comparison
On-Time Rate by Airline
JetBlue Airways77%
Frontier Airlines75%
SJU to RDU Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| JetBlue AirwaysB6Best | 77% | 0.7% | 84m | 1,082 |
| Frontier AirlinesF9Worst | 75% | 1.8% | 59m | 676 |
Route Overview
76%
Overall On-Time
74m
Avg Delay
1.4%
Cancel Rate
1,834
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.