Flight number record
UA 1502
United Airlines · Salt Lake City to Chicago
- Route
- SLC → ORD
- Departs
- 08:30
- Flights
- 256
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1502, check with United Airlines.
UA 1502 lands a B, 4 points better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 256 flights, with a median arrival 13 minutes early.
Set against the rest of the country, UA 1502's record is 4 points better than the US average of 77.3%. That gap is worth roughly 43 fewer late arrivals for every thousand flights.
Key figures
On time
81.6%
Arrivals under 15 minutes late, of 250 completed flights
Avg delay
111 min
Across delayed arrivals only, not all flights
Cancelled
1.95%
National rate is 1.89%
1 hour+ late
7.2%
National rate is 8.3%
These figures cover 256 flights between September 2025 and August 2026. The median arrival is 13 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When UA 1502 flies
UA 1502 flies SLC to ORD without a single fixed slot. Its most common scheduled departure was 08:30, used on 54 of 256 flights, with 08:00 (47 flights) and 07:30 (45 flights) next.
- Departs 08:3054 flights21.1%
- Departs 08:0047 flights18.4%
- Departs 07:3045 flights17.6%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 08:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 1502 runs 2 points worse at 81.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 1502 next to SLC to ORD
Every carrier on SLC to ORD combined arrived on time 74.9% of the time across 3,246 flights, so UA 1502 is 7 points ahead of it. United flew 1,073 flights on the same city pair under all its flight numbers, including this one, and those ran 73.7% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1502thin sample | 256 | 81.6% | 111 min | 1.95% | B |
| All United Airlines on SLC–ORD | 1,073 | 73.7% | 91 min | 1.40% | C |
| All carriers on SLC–ORD | 3,246 | 74.9% | 94 min | 1.48% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1502 quarter by quarter
UA 1502 did not run the same all year. Its best quarter was Apr–Jun 2026 at 94.6% on time and its weakest Jan–Mar 2026 at 76.5%, a swing of 18 points on roughly 64 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Oct–Dec 202553 flights78.8%
- Jan–Mar 202685 flights76.5%
- Apr–Jun 202656 flights94.6%
- Jul–Sep 202662 flights78.9%
Scale runs 70% to 100%.
By weekday, UA 1502 did best on Wednesday at 88.9% on time and worst on Sunday at 72.2%. Each day rests on about 37 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1502 runs when it is late
UA 1502 often beats the schedule: 116 of 250 completed flights, 46%, arrived 15 minutes or more early. The 46 late arrivals split 15 under half an hour, 13 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early116 flights46.4%
- Within 15 min88 flights35.2%
- 15–29 min late15 flights6.0%
- 30–59 min late13 flights5.2%
- 1–2 hours late8 flights3.2%
- 2+ hours late10 flights4.0%
Scale runs 0% to 100%.
Share of 250 completed flights by arrival against schedule.
4 of 30 late departures made up the time and arrived on time, 13% of them. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at ORD.
The worst days
Worst days for UA 1502
The latest arrival of the period was on 29 November 2025, 25 hours 45 minutes behind schedule; most of its delay minutes were filed as extreme weather. On four of the five worst days the largest share was filed as national airspace system delay.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 29 November 2025 | 25 hours 45 minutes | Extreme weather |
| 3 July 2026 | 6 hours 59 minutes | National Airspace System |
| 6 March 2026 | 5 hours 29 minutes | National Airspace System |
| 7 December 2025 | 4 hours 36 minutes | National Airspace System |
| 10 August 2026 | 3 hours 46 minutes | National Airspace System |
Delay causes
Why UA 1502 runs late
National Airspace System accounts for 51% of the 5,094 delay minutes carriers reported here, and the remaining four split what is left.
- 51%National Airspace System
- 32%Extreme weather
- 9%Carrier
- 8%Late-arriving aircraft
Extreme weather accounts for 32% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 5.2 times the usual weather exposure. The split is drawn from 5,094 delay minutes reported on UA 1502.
Cancellations sit at 1.95% against a national 1.89%, which is ordinary. Diversions add another 0.39%.
Connections and routes
What a delay on this flight costs
7.2% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.
The 1,250 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on six other city pairs in the data, including ORD to CLE (176), ORD to RDU (145) and RDU to IAD (78), but none flew often enough under UA 1502 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to ORD only.
One caution: this is a thin sample. 256 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 UA 1502
For a booking, read UA 1502 as 81.6% on time with 1.95% cancelled over 256 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SLC to ORD, every carrier and departure
- ORD to SLC, the return direction
- Delta Air Lines 2413 on the same route71.1%
- Delta Air Lines 2247 on the same route85.1%
- Delta Air Lines 2377 on the same route68.2%
- United Airlines 1382 on the same route74.3%
- Salt Lake City International (SLC) delay statistics
- Chicago O'Hare International (ORD) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- The best time of day to fly, according to 7.05 million flight records
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.