JetBlue Airways is the most reliable airline on the RDU to SJU route with a 75% on-time rate, compared to Frontier Airlines at 66%. Based on 1,079 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: RDU to SJU
Raleigh to San Juan — airline reliability comparison
On-Time Rate by Airline
JetBlue Airways75%
Frontier Airlines66%
RDU to SJU Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| JetBlue AirwaysB6Best | 75% | 0.9% | 89m | 1,079 |
| Frontier AirlinesF9Worst | 66% | 1.6% | 90m | 677 |
Route Overview
71%
Overall On-Time
86m
Avg Delay
1.4%
Cancel Rate
1,832
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.