Flight number record
UA 1389
United Airlines · Columbus to Denver
- Route
- CMH → DEN
- Departs
- 15:30
- Flights
- 364
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1389, check with United Airlines.
UA 1389 lands a B+, about a point better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 364 flights, with a median arrival 8 minutes early.
Key figures
On time
78.4%
Arrivals under 15 minutes late, of 357 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
0.55%
National rate is 1.81%
1 hour+ late
7.3%
National rate is 8.1%
These figures cover 364 flights between July 2025 and June 2026. The median arrival is 8 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.
Schedule
When UA 1389 flies
UA 1389 flies CMH to DEN without a single fixed slot. Its most common scheduled departure was 15:30, used on 86 of 364 flights, with 15:38 (47 flights) and 16:35 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 15:3086 flights23.6%
- Departs 15:3847 flights12.9%
- Departs 16:3537 flights10.2%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 15:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 1389 runs 6 points better at 78.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
UA 1389 next to CMH to DEN
Every carrier on CMH to DEN combined arrived on time 79.2% of the time across 1,768 flights, so UA 1389 is about level with it. United flew 729 flights on the same city pair under all its flight numbers, including this one, and those ran 81.9% on time. Across its whole network United Airlines managed 79.0%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1389thin sample | 364 | 78.4% | 64 min | 0.55% | B+ |
| All United Airlines on CMH–DEN | 729 | 81.9% | 72 min | 0.82% | B+ |
| All carriers on CMH–DEN | 1,768 | 79.2% | 67 min | 0.68% | B+ |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 1389 quarter by quarter
UA 1389 did not run the same all year. Its best quarter was Apr–Jun 2026 at 86.5% on time and its weakest Jul–Sep 2025 at 70.8%, a swing of 16 points on roughly 91 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.
- Jul–Sep 202592 flights70.8%
- Oct–Dec 202591 flights74.4%
- Jan–Mar 202690 flights82.0%
- Apr–Jun 202691 flights86.5%
Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1389 did best on Thursday at 84.0% on time and worst on Friday at 71.2%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Delay causes
Why UA 1389 runs late
One category carries most of the weight here. National Airspace System accounts for 43% of the 4,914 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 43%National Airspace System
- 28%Carrier
- 25%Late-arriving aircraft
- 4%Extreme weather
43% 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 2,095 minutes out of 4,914, against a national NAS share of 21%. The split is drawn from 4,914 delay minutes reported on UA 1389.
Cancellations are rare at 0.55%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
7.3% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 1,154 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on three other city pairs in the data, including DEN to SFO (118), DEN to DRO (36) and SFO to SEA (2), but none flew often enough under UA 1389 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to CMH to DEN only.
One caution: this is a thin sample. 364 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 1389
For a booking, read UA 1389 as 78.4% on time with 0.55% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- CMH to DEN, every carrier and departure
- DEN to CMH, the return direction
- United Airlines 728 on the same route85.3%
- John Glenn Columbus International (CMH) delay statistics
- Denver International (DEN) 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 7.04 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.