Delta Air Lines is the most reliable airline on the RDU to SLC route with a 86% on-time rate. Based on 1,437 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: RDU to SLC
Raleigh to Salt Lake City — airline reliability comparison
On-Time Rate by Airline
Delta Air Lines86%
RDU to SLC Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Delta Air LinesDLBest | 86% | 0.8% | 57m | 1,437 |
Route Overview
85%
Overall On-Time
59m
Avg Delay
1%
Cancel Rate
1,437
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.