Flight number record
UA 779
United Airlines · Austin to Denver
- Route
- AUS → DEN
- Departs
- 11:27
- Flights
- 253
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 779, check with United Airlines.
UA 779 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 253 flights, with a median arrival 14 minutes early.
Set against the rest of the country, UA 779's record is 16 points better than the US average of 77.3%. That gap is worth roughly 155 fewer late arrivals for every thousand flights.
Key figures
On time
92.8%
Arrivals under 15 minutes late, of 251 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
0.79%
National rate is 1.89%
1 hour+ late
2.8%
National rate is 8.3%
These figures cover 253 flights between September 2025 and August 2026. The median arrival is 14 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 779 flies
UA 779 flies AUS to DEN without a single fixed slot. Its most common scheduled departure was 11:27, used on 64 of 253 flights, with 10:50 (48 flights) and 11:00 (26 flights) next.
- Departs 11:2764 flights25.3%
- Departs 10:5048 flights19.0%
- Departs 11:0026 flights10.3%
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 11:27 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 779 runs 15 points better at 92.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 779 next to AUS to DEN
Every carrier on AUS to DEN combined arrived on time 78.9% of the time across 5,509 flights, so UA 779 is 14 points ahead of it. United flew 1,885 flights on the same city pair under all its flight numbers, including this one, and those ran 85.7% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 779thin sample | 253 | 92.8% | 63 min | 0.79% | A+ |
| All United Airlines on AUS–DEN | 1,885 | 85.7% | 72 min | 0.69% | A+ |
| All carriers on AUS–DEN | 5,509 | 78.9% | 63 min | 0.64% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 779 quarter by quarter
UA 779 did not run the same all year. Its best quarter was Apr–Jun 2026 at 97.0% on time and its weakest Jan–Mar 2026 at 86.7%, a swing of 10 points on roughly 63 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 202526 flights—
- Oct–Dec 202557 flights93.0%
- Jan–Mar 202645 flights86.7%
- Apr–Jun 202666 flights97.0%
- Jul–Sep 202659 flights94.9%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 779 did best on Monday at 100.0% on time and worst on Wednesday at 86.5%. Each day rests on about 36 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 779 runs when it is late
UA 779 often beats the schedule: 118 of 251 completed flights, 47%, arrived 15 minutes or more early. The 18 late arrivals split 7 under half an hour, 4 between 30 and 60 minutes, and 7 an hour or more.
- 15+ min early118 flights47.0%
- Within 15 min115 flights45.8%
- 15–29 min late7 flights2.8%
- 30–59 min late4 flights1.6%
- 1–2 hours late4 flights1.6%
- 2+ hours late3 flights1.2%
Scale runs 0% to 100%.
Share of 251 completed flights by arrival against schedule.
Only 16 of 251 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for UA 779
The latest arrival of the period was on 17 February 2026, 2 hours 57 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across February, March, September and August, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 February 2026 | 2 hours 57 minutes | National Airspace System |
| 18 March 2026 | 2 hours 33 minutes | National Airspace System |
| 19 September 2025 | 2 hours 17 minutes | Late-arriving aircraft |
| 28 August 2026 | 1 hour 35 minutes | Carrier |
| 20 February 2026 | 1 hour 32 minutes | Late-arriving aircraft |
Delay causes
Why UA 779 runs late
National Airspace System accounts for 45% of the 1,129 delay minutes carriers reported here, and the remaining four split what is left.
- 45%National Airspace System
- 28%Carrier
- 27%Late-arriving aircraft
45% 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 510 minutes out of 1,129, against a national NAS share of 21%. The split is drawn from 1,129 delay minutes reported on UA 779.
Cancellations are rare at 0.79%, 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
Badly late arrivals are rare here: only 2.8% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 775 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 DEN to BOS (82), IAH to AUS (36) and DEN to SAN (19), but none flew often enough under UA 779 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to AUS to DEN only.
One caution: this is a thin sample. 253 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 779
For a booking, UA 779 has one of the better records a US domestic flight can show: 92.8% on time and 0.79% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- AUS to DEN, every carrier and departure
- DEN to AUS, the return direction
- United Airlines 2447 on the same route82.2%
- Frontier Airlines 1815 on the same route88.2%
- United Airlines 595 on the same route89.0%
- Austin-Bergstrom International (AUS) 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
- Worst months to fly in the US, ranked by the data
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.