Best Time to Fly SLC to EWR: On-Time Stats by Hour & Airline
Salt Lake City International → Newark Liberty International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.2% of Salt Lake City (SLC) to Newark (EWR) flights arrived on time (1,337 scheduled flights). That is 2.5 points above the national average of 77.6%.
Delta Air Lines was the most punctual of the 2 airlines on the route at 81.6%, while United Airlines trailed at 78.5%.
January has been the best month (83% on time) and Thursday the weakest day of the week (69%).
2.4% of flights were cancelled, versus 1.8% nationally.
SLC to EWR 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 | 81.6% | 62 min | 2.5% | 722 |
| United Airlines | 78.5% | 88 min | 2.3% | 615 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SLC to EWR
On-time arrival % by scheduled departure hour (local time), 2,551 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | 79.4% | 2.1% | 326 |
| 7am–8am | 89.7% | 3.7% | 81 |
| 9am–10am | 74.5% | 0.0% | 51 |
| 10am–11am | 82.8% | 3.0% | 132 |
| 11am–12pm | 69.7% | 1.4% | 858 |
| 12pm–1pm | 75.9% | 0.0% | 58 |
| 1pm–2pm | 86.3% | 7.3% | 55 |
| 2pm–3pm | 76.5% | 0.0% | 82 |
| 3pm–4pm | 62.5% | 0.9% | 105 |
| 4pm–5pm | Limited data | 22 | |
| 5pm–6pm | 83.3% | 2.5% | 198 |
| 10pm–11pm | 93.3% | 3.2% | 31 |
| 11pm–12am | 79.1% | 2.0% | 552 |
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 EWR
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) | 81.1% | +4.4 pts | 0.0% | 37 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.9% | -5.8 pts | 3.5% | 114 |
| Summer peak (Jun 15 - Aug 15) | 71.5% | -5.2 pts | 3.7% | 379 |
| All other days | 76.7% | — | 1.5% | 2,021 |
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).