Salt Lake City (SLC) to Raleigh/Durham (RDU): On-Time Performance
Data through May 2026
When you fly SLC to RDU matters as much as anything else about the booking: the route swung from 100% on-time in January 2026 to just 65% in July 2024. Across the full period the route averages 86% on-time against a national 78%.
- On-time
- 86%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 1.2
- last 12 months
- Duration
- 4h 2m
- scheduled
- Distance
- 1,824 mi
Monthly on-time trend
Best time to fly from SLC to RDU
Aim for departures around 5 p.m. (91% on-time); avoid 11 p.m. departures (77%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 89% | 6 min |
| Tuesdaybest | 92% | 4 min |
| Wednesday | 85% | 11 min |
| Thursday | 86% | 15 min |
| Friday | 84% | 11 min |
| Saturday | 82% | 11 min |
| Sunday | 83% | 10 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft29%
- Airline operations53%
- National airspace system13%
- Weather5%
Frequently asked questions
- How often are flights from SLC to RDU delayed?
- 14% of SLC–RDU flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 10 minutes.
- What is the best time of day to fly from SLC to RDU?
- Departures around 5 p.m. have the best record (91% on-time), while departures around 11 p.m. have the worst (77%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SLC to RDU?
- The scheduled SLC–RDU flight time averages 4h 2m over 1,824 miles. Actual arrival times vary — flights on this route land 15+ minutes late 14% of the time.
- How often are SLC to RDU flights cancelled?
- 1.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SLC to RDU?
- July 2024 was the roughest month in this dataset, with only 65% of arrivals on time. The best was January 2026 at 100%. If your dates are flexible, that 35-point gap is worth planning around.
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Based on 856 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.