Raleigh/Durham (RDU) to Salt Lake City (SLC): On-Time Performance
Data through July 2026
When you fly RDU to SLC matters as much as anything else about the booking: the route swung from 100% on-time in October 2024 to just 62% in July 2024. Across the full period the route averages 83% on-time against a national 78%.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 1.0
- last 12 months
- Duration
- 4h 43m
- scheduled
- Distance
- 1,824 mi
Monthly on-time trend
Best time to fly from RDU to SLC
Aim for departures around 7 a.m. (84% on-time); avoid 7 p.m. departures (72%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 85% | 7 min |
| Tuesdaybest | 87% | 8 min |
| Wednesday | 84% | 7 min |
| Thursday | 84% | 16 min |
| Friday | 79% | 18 min |
| Saturday | 80% | 21 min |
| Sunday | 83% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations41%
- National airspace system13%
- Weather7%
Frequently asked questions
- How often are flights from RDU to SLC delayed?
- 17% of RDU–SLC flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 13 minutes.
- What is the best time of day to fly from RDU to SLC?
- Departures around 7 a.m. have the best record (84% on-time), while departures around 7 p.m. have the worst (72%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from RDU to SLC?
- The scheduled RDU–SLC flight time averages 4h 43m over 1,824 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are RDU to SLC flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from RDU to SLC?
- July 2024 was the roughest month in this dataset, with only 62% of arrivals on time. The best was October 2024 at 100%. If your dates are flexible, that 39-point gap is worth planning around.
Explore related pages
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Related guides
Based on 866 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.