Flight number record
UA 1347
United Airlines · Denver to Bozeman
- Route
- DEN → BZN
- Departs
- 19:25
- Flights
- 341
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1347, check with United Airlines.
UA 1347 lands a B+, 2 points 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 roughly 55 minutes on average. That rests on 341 flights, with a median arrival right on schedule.
Key figures
On time
78.9%
Arrivals under 15 minutes late, of 341 completed flights
Avg delay
53 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
5.6%
National rate is 8.3%
These figures cover 341 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Schedule
When UA 1347 flies
UA 1347 flies DEN to BZN without a single fixed slot. Its most common scheduled departure was 19:25, used on 80 of 341 flights, with 19:50 (71 flights) and 19:45 (56 flights) next.
- Departs 19:2580 flights23.5%
- Departs 19:5071 flights20.8%
- Departs 19:4556 flights16.4%
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 19:25 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 1347 runs 11 points better at 78.9%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 1347 next to DEN to BZN
Every carrier on DEN to BZN combined arrived on time 78.1% of the time across 2,703 flights, so UA 1347 is about level with it. United flew 1,210 flights on the same city pair under all its flight numbers, including this one, and those ran 83.1% on time. Across its whole network United Airlines managed 78.8%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1347thin sample | 341 | 78.9% | 53 min | 0.00% | B+ |
| All United Airlines on DEN–BZN | 1,210 | 83.1% | 58 min | 0.17% | B+ |
| All carriers on DEN–BZN | 2,703 | 78.1% | 54 min | 0.33% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1347 quarter by quarter
UA 1347 did not run the same all year. Its best quarter was Apr–Jun 2026 at 83.5% on time and its weakest Jul–Sep 2026 at 59.0%, a swing of 25 points on roughly 68 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 202530 flights80.0%
- Oct–Dec 202591 flights79.1%
- Jan–Mar 202690 flights82.2%
- Apr–Jun 202691 flights83.5%
- Jul–Sep 202639 flights59.0%
Scale runs 50% to 90%.
By weekday, UA 1347 did best on Monday at 85.7% on time and worst on Saturday at 72.9%. Each day rests on about 49 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1347 runs when it is late
The 72 late arrivals split 24 under half an hour, 29 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early36 flights10.6%
- Within 15 min233 flights68.3%
- 15–29 min late24 flights7.0%
- 30–59 min late29 flights8.5%
- 1–2 hours late13 flights3.8%
- 2+ hours late6 flights1.8%
Scale runs 0% to 100%.
Share of 341 completed flights by arrival against schedule.
20 of 80 late departures made up the time and arrived on time, 25% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for UA 1347
The latest arrival of the period was on 17 December 2025, 4 hours 19 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 December 2025 | 4 hours 19 minutes | Late-arriving aircraft |
| 21 June 2026 | 2 hours 58 minutes | Late-arriving aircraft |
| 29 November 2025 | 2 hours 44 minutes | Late-arriving aircraft |
| 10 July 2026 | 2 hours 35 minutes | Late-arriving aircraft |
| 7 August 2026 | 2 hours 2 minutes | Late-arriving aircraft |
Delay causes
Why UA 1347 runs late
Late-arriving aircraft accounts for 55% of the 3,825 delay minutes carriers reported here, and the remaining four split what is left.
- 55%Late-arriving aircraft
- 31%Carrier
- 12%National Airspace System
- 2%Extreme weather
55% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,825 reported delay minutes here, that single category outweighs weather by 32 to one. The split is drawn from 3,825 delay minutes reported on UA 1347.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
5.6% 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 roughly 55 minutes, which a normal layover absorbs.
The 524 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 one other city pair in the data, including EWR to ORD (22), but none flew often enough under UA 1347 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to BZN only.
One caution: this is a thin sample. 341 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 1347
For a booking, read UA 1347 as 78.9% on time with 0.00% cancelled over 341 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to BZN, every carrier and departure
- BZN to DEN, the return direction
- United Airlines 741 on the same route81.3%
- 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
- Why the first flight of the morning is statistically safest
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.