Flight number record
UA 1305
United Airlines · Denver to Atlanta
- Route
- DEN → ATL
- Departs
- 17:48
- Flights
- 360
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1305, check with United Airlines.
UA 1305 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 360 flights, with a median arrival 4 minutes early.
The national on-time rate over the same period is 77.3%, so UA 1305 runs 6 points behind the country as a whole. Across a thousand flights that is about 64 extra late arrivals.
Key figures
On time
70.9%
Arrivals under 15 minutes late, of 358 completed flights
Avg delay
67 min
Across delayed arrivals only, not all flights
Cancelled
0.28%
National rate is 1.89%
1 hour+ late
10.3%
National rate is 8.3%
These figures cover 360 flights between September 2025 and August 2026. Beyond the headline rate, 10.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 1305 flies
UA 1305 flies DEN to ATL without a single fixed slot. Its most common scheduled departure was 17:48, used on 81 of 360 flights, with 17:39 (56 flights) and 17:35 (40 flights) next.
- Departs 17:4881 flights22.5%
- Departs 17:3956 flights15.6%
- Departs 17:3540 flights11.1%
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 17:48 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 1305 runs 3 points better at 70.9%. 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 1305 next to DEN to ATL
Every carrier on DEN to ATL combined arrived on time 78.6% of the time across 5,603 flights, so UA 1305 is 8 points behind it. United flew 923 flights on the same city pair under all its flight numbers, including this one, and those ran 77.9% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1305thin sample | 360 | 70.9% | 67 min | 0.28% | C+ |
| All United Airlines on DEN–ATL | 923 | 77.9% | 61 min | 0.33% | B+ |
| All carriers on DEN–ATL | 5,603 | 78.6% | 58 min | 0.93% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1305 quarter by quarter
UA 1305 did not run the same all year. Its best quarter was Jan–Mar 2026 at 78.7% on time and its weakest Jul–Sep 2026 at 50.9%, a swing of 28 points on roughly 72 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 flights70.0%
- Oct–Dec 202591 flights75.8%
- Jan–Mar 202690 flights78.7%
- Apr–Jun 202691 flights71.4%
- Jul–Sep 202658 flights50.9%
Scale runs 40% to 85%.
By weekday, UA 1305 did best on Tuesday at 78.8% on time and worst on Monday at 65.4%. Each day rests on about 51 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1305 runs when it is late
UA 1305 often beats the schedule: 101 of 358 completed flights, 28%, arrived 15 minutes or more early. The 104 late arrivals split 33 under half an hour, 34 between 30 and 60 minutes, and 37 an hour or more.
- 15+ min early101 flights28.2%
- Within 15 min153 flights42.7%
- 15–29 min late33 flights9.2%
- 30–59 min late34 flights9.5%
- 1–2 hours late22 flights6.1%
- 2+ hours late15 flights4.2%
Scale runs 0% to 100%.
Share of 358 completed flights by arrival against schedule.
12 of 92 late departures made up the time and arrived on time, 13% of them. In the other direction, 24 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 ATL.
The worst days
Worst days for UA 1305
The latest arrival of the period was on 19 December 2025, 5 hours 33 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 December 2025 | 5 hours 33 minutes | Late-arriving aircraft |
| 14 August 2026 | 5 hours 10 minutes | Late-arriving aircraft |
| 21 June 2026 | 4 hours 54 minutes | Late-arriving aircraft |
| 15 March 2026 | 4 hours 30 minutes | Extreme weather |
| 8 November 2025 | 3 hours 58 minutes | Late-arriving aircraft |
Delay causes
Why UA 1305 runs late
Late-arriving aircraft accounts for 51% of the 6,986 delay minutes carriers reported here, and the remaining four split what is left.
- 51%Late-arriving aircraft
- 26%Carrier
- 18%National Airspace System
- 4%Extreme weather
51% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,986 reported delay minutes here, that single category outweighs weather by 12 to one. The split is drawn from 6,986 delay minutes reported on UA 1305.
Cancellations are rare at 0.28%, below the national 1.89% 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
10.3% 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.
The 1,199 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 three other city pairs in the data, including MSP to DEN (155), SNA to DEN (31) and ONT to DEN (19), but none flew often enough under UA 1305 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to ATL only.
One caution: this is a thin sample. 360 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 1305
For a booking, UA 1305 is one of the weaker ways to fly DEN to ATL: 8 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- DEN to ATL, every carrier and departure
- ATL to DEN, the return direction
- Delta Air Lines 341 on the same route93.9%
- Delta Air Lines 431 on the same route93.9%
- Delta Air Lines 346 on the same route79.2%
- Frontier Airlines 3600 on the same route70.8%
- Delta Air Lines 840 on the same route80.7%
- Frontier Airlines 3294 on the same route87.5%
- Denver International (DEN) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) 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.