Newark (EWR) to Salt Lake City (SLC): On-Time Performance
Data through July 2026
The calendar drives reliability on EWR–SLC. September 2025 flights landed on schedule 91% of the time, but May 2025 dropped to 58% — a gap of 33 points. Across the full period the route averages 75% on-time against a national 78%. Morning departures also hold up better than evening ones (81% vs 68%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 1.9%
- Flights/day
- 3.7
- last 12 months
- Duration
- 5h 12m
- scheduled
- Distance
- 1,969 mi
Best airline from EWR to SLC
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 78% | 15 min | 1.5% | 1,175 |
| Delta Air Lines | 72% | 26 min | 2.2% | 1,467 |
Monthly on-time trend
Best time to fly from EWR to SLC
Aim for departures around 8 a.m. (90% on-time); avoid 7 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 76% | 17 min |
| Tuesdaybest | 80% | 17 min |
| Wednesday | 75% | 22 min |
| Thursday | 73% | 24 min |
| Friday | 74% | 20 min |
| Saturday | 71% | 24 min |
| Sunday | 74% | 23 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft34%
- Airline operations38%
- National airspace system22%
- Weather7%
Frequently asked questions
- How often are flights from EWR to SLC delayed?
- 25% of EWR–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 21 minutes.
- Which airline is most reliable from EWR to SLC?
- United Airlines has the best on-time record on this route at 78%, based on 1,175 flights. 2 airlines flew EWR–SLC frequently enough to compare in this period.
- What is the best time of day to fly from EWR to SLC?
- Departures around 8 a.m. have the best record (90% on-time), while departures around 7 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from EWR to SLC?
- The scheduled EWR–SLC flight time averages 5h 12m over 1,969 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are EWR to SLC flights cancelled?
- 1.9% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from EWR to SLC?
- May 2025 was the roughest month in this dataset, with only 58% of arrivals on time. The best was September 2025 at 91%. If your dates are flexible, that 33-point gap is worth planning around.
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Based on 2,642 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.