Flight number record
UA 1007
United Airlines · Denver to San Francisco
- Route
- DEN → SFO
- Departs
- 17:54
- Flights
- 312
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1007, check with United Airlines.
UA 1007 draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 312 flights, with a median arrival right on schedule.
The national on-time rate over the same period is 77.3%, so UA 1007 runs 11 points behind the country as a whole. Across a thousand flights that is about 111 extra late arrivals.
Key figures
On time
66.2%
Arrivals under 15 minutes late, of 311 completed flights
Avg delay
93 min
Across delayed arrivals only, not all flights
Cancelled
0.32%
National rate is 1.89%
1 hour+ late
18.6%
National rate is 8.3%
These figures cover 312 flights between September 2025 and August 2026. Beyond the headline rate, 18.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 1007 flies
UA 1007 flies DEN to SFO without a single fixed slot. Its most common scheduled departure was 17:54, used on 82 of 312 flights, with 17:59 (45 flights) and 17:50 (37 flights) next.
- Departs 17:5482 flights26.3%
- Departs 17:5945 flights14.4%
- Departs 17:5037 flights11.9%
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 17:54 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 1007 runs level with that at 66.2%. 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 1007 next to DEN to SFO
Every carrier on DEN to SFO combined arrived on time 63.2% of the time across 5,488 flights, so UA 1007 is 3 points ahead of it. United flew 3,429 flights on the same city pair under all its flight numbers, including this one, and those ran 69.0% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1007thin sample | 312 | 66.2% | 93 min | 0.32% | C+ |
| All United Airlines on DEN–SFO | 3,429 | 69.0% | 63 min | 0.23% | C+ |
| All carriers on DEN–SFO | 5,488 | 63.2% | 62 min | 0.40% | D+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1007 quarter by quarter
UA 1007 did not run the same all year. Its best quarter was Jan–Mar 2026 at 78.3% on time and its weakest Jul–Sep 2026 at 47.5%, a swing of 31 points on roughly 78 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 202524 flights—
- Oct–Dec 202566 flights66.7%
- Jan–Mar 202669 flights78.3%
- Apr–Jun 202691 flights64.8%
- Jul–Sep 202662 flights47.5%
Scale runs 40% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1007 did best on Saturday at 88.4% on time and worst on Friday at 52.3%. Each day rests on about 45 flights, so a gap of 36 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1007 runs when it is late
When UA 1007 is late it tends to be very late: 58 of its 105 late arrivals were an hour or more behind, and 31 were two hours or more.
- 15+ min early65 flights20.9%
- Within 15 min141 flights45.3%
- 15–29 min late26 flights8.4%
- 30–59 min late21 flights6.8%
- 1–2 hours late27 flights8.7%
- 2+ hours late31 flights10.0%
Scale runs 0% to 100%.
Share of 311 completed flights by arrival against schedule.
16 of 107 late departures made up the time and arrived on time, 15% of them. 14 flights left on time and still arrived late.
The worst days
Worst days for UA 1007
The latest arrival of the period was on 2 January 2026, 5 hours 59 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 January 2026 | 5 hours 59 minutes | National Airspace System |
| 14 August 2026 | 5 hours 15 minutes | Late-arriving aircraft |
| 26 December 2025 | 5 hours 9 minutes | Late-arriving aircraft |
| 5 January 2026 | 5 hours 9 minutes | National Airspace System |
| 9 July 2026 | 4 hours 30 minutes | Late-arriving aircraft |
Delay causes
Why UA 1007 runs late
National Airspace System accounts for 49% of the 9,805 delay minutes carriers reported here, and the remaining four split what is left.
- 49%National Airspace System
- 41%Late-arriving aircraft
- 9%Carrier
- 1%Extreme weather
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 9,805 reported delay minutes here, that single category outweighs weather by 41 to one. The split is drawn from 9,805 delay minutes reported on UA 1007.
Cancellations are rare at 0.32%, 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
18.6% 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.
The 967 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 seven other city pairs in the data, including SFO to SEA (236), SAT to DEN (102) and MEM to DEN (52), but none flew often enough under UA 1007 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to SFO only.
One caution: this is a thin sample. 312 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 1007
For a booking, UA 1007 is a flight to put a long connection behind. 18.6% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- DEN to SFO, every carrier and departure
- SFO to DEN, the return direction
- United Airlines 1812 on the same route73.4%
- United Airlines 2633 on the same route68.7%
- United Airlines 2391 on the same route71.7%
- United Airlines 2367 on the same route95.3%
- United Airlines 1561 on the same route66.8%
- United Airlines 2123 on the same route56.6%
- Denver International (DEN) delay statistics
- San Francisco International (SFO) 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.