Carrier route record
UASLC→EWR
United Airlines · Salt Lake City to Newark
- Flights
- 615
- Period
- September 2025 to August 2026
- Share of route
- 46%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on SLC to EWR lands a B, about a point better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 615 flights, with a median arrival 10 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate United on SLC to EWR from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
78.4%
Arrivals under 15 minutes late, of 592 completed flights
Avg delay
89 min
Across delayed arrivals only, not all flights
Cancelled
2.28%
National rate is 1.89%
Whole route
80.1%
Every carrier on SLC to EWR, 1,338 flights
These figures cover 615 flights between September 2025 and August 2026. Beyond the headline rate, 9.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
United against every carrier on SLC to EWR
United flew 615 of the 1,338 flights on SLC to EWR, about 46% of it. Its 78.4% on time is 2 points worse than the route as a whole, which runs 80.1%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Delta at 81.6% to United at 78.4%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 723 | 81.6% | 60 min | 2.63% | B |
| United Airlines (this page) | 615 | 78.4% | 89 min | 2.28% | B |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When United runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 16 points, against half a point between the best and worst carrier.
- 5am–8am81 flights89.7%
- 8am–11am—
- 11am–2pm216 flights74.6%
- 2pm–5pm92 flights73.6%
- 5pm–8pm—
- 8pm–5am226 flights79.8%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 89.7% of the time, against 73.6% for the afternoon window. That is 16 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 226 flights scheduled in it.
Across the year
United on SLC to EWR through the year
May is the best month on the calendar at 92.3% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. March was the busiest month here, with 105 flights.
Across the week, Wednesday is the strongest day at 85.4% on time and Saturday the weakest at 70.6%, a spread of 15 points.
Arrival by arrival
How late United on SLC to EWR runs when it is late
United on SLC to EWR often beats the schedule: 237 of 592 completed flights, 40%, arrived 15 minutes or more early. The 128 late arrivals split 36 under half an hour, 35 between 30 and 60 minutes, and 57 an hour or more.
- 15+ min early237 flights40.0%
- Within 15 min227 flights38.3%
- 15–29 min late36 flights6.1%
- 30–59 min late35 flights5.9%
- 1–2 hours late37 flights6.3%
- 2+ hours late20 flights3.4%
Scale runs 0% to 100%.
Share of 592 completed flights by arrival against schedule.
26 of 126 late departures made up the time and arrived on time, 21% of them. 28 flights left on time and still arrived late.
The worst days
Worst days for United on SLC to EWR
The latest arrival of the period was on 12 July 2026, 24 hours 14 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 July 2026 | 24 hours 14 minutes | Carrier |
| 8 March 2026 | 12 hours 8 minutes | Carrier |
| 18 February 2026 | 9 hours 58 minutes | Late-arriving aircraft |
| 11 March 2026 | 5 hours 28 minutes | Carrier |
| 23 August 2026 | 4 hours 13 minutes | Late-arriving aircraft |
Delay causes
Why United runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 11,000 reported delay minutes.
- 39%National Airspace System
- 32%Carrier
- 28%Late-arriving aircraft
- 1%Extreme weather
39% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 4,426 minutes out of 11,000, against a national NAS share of 21%. The split is drawn from 11,334 reported delay minutes.
Cancellations sit at 2.28% against a national 1.89%, which is ordinary. Diversions add another 1.46%.
Connections and stage length
What a delay here costs
9.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 1,969 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg runs 77.0% on time across 615 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 615 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking United on SLC to EWR
Put together: treat all of this as provisional. 615 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 78.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 592 completed flights over 12 months sit behind that.
Related
Where to go next
- SLC to EWR, every carrier
- United on EWR to SLC, the return leg
- Delta Air Lines on SLC to EWR81.6%
- United Airlines network-wide record
- Salt Lake City International (SLC) delay statistics
- Newark Liberty International (EWR) delay statistics
- How often a connection fails at the major US hubs
- The best time of day to fly, according to 7.05 million flight records
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.