Best Time to Fly SLC to RDU: On-Time Stats by Hour & Airline
Salt Lake City International → Raleigh-Durham International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 88.3% of Salt Lake City (SLC) to Raleigh/Durham (RDU) flights arrived on time (383 scheduled flights). That is 10.7 points above the national average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
January has been the best month (97% on time) and Sunday the weakest day of the week (82%).
1.3% of flights were cancelled, versus 1.8% nationally.
SLC to RDU on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Lines | 88.3% | 60 min | 1.3% | 383 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SLC to RDU
On-time arrival % by scheduled departure hour (local time), 809 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | Limited data | 1 | |
| 9am–10am | Limited data | 16 | |
| 10am–11am | 89.8% | 0.0% | 49 |
| 11am–12pm | 86.7% | 0.0% | 452 |
| 5pm–6pm | 84.4% | 2.3% | 217 |
| 11pm–12am | 83.1% | 2.7% | 74 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SLC to RDU
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 89.2% | +0.3 pts | 0.0% | 38 |
| Summer peak (Jun 15 - Aug 15) | 76.0% | -12.9 pts | 1.1% | 187 |
| All other days | 88.8% | — | 0.9% | 570 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).