Flight profile · United Airlines
UA1191
Burbank (BUR) to Denver (DEN) · scheduled 9:00 AM – 12:28 PM
How UA1191 performs
1,059 operations, September 2023 – July 2026.
UA1191 arrived on time 87.0% of the time, against 83.1% for all BUR → DEN flights, so this departure is 3.9 percentage points better than the route as a whole. Against United Airlines’ own flights on this route it is 4.2 points better.
Source: US DOT Bureau of Transportation Statistics · 1,059 operations, September 2023 – July 2026 · If UA1191 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where UA1191 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| UA1191 | 87.0% | 1.13% | -13 min | 4.0% | 1,059 |
| United Airlines on BUR → DEN | 82.8% | 0.94% | -10 min | 6.4% | 2,227 |
| All BUR → DEN flights | 83.1% | 0.81% | -9 min | 6.2% | 6,420 |
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026
Why UA1191 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for UA1191 on BUR → DEN. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies UA1191 comes in late, and what that does to the departure.
UA1191 is usually the aircraft’s first flight of the day: the schedule gives it a median of 11.9 hours on the ground at BUR, so its “inbound” is mostly the aircraft’s arrival the evening before.
The aircraft flying UA1191 came in 15 or more minutes late on 20% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Each departure is matched to the flight the same aircraft flew into BUR just before it, using the tail number in the DOT file, 341 of 1,047 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late |
|---|---|
| UA1191 | 20% |
| Network, same turn | 29% |
A night on the ground absorbs most of a late arrival, so a late inbound matters far less on a turn this long than on a same-day one.
The network row is every flight with a scheduled turn of 6 hours or more, usually overnight. How often UA1191’s aircraft landed 15 or more minutes late is lower than the network’s. There are not enough departures in both groups to compare how it left.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
From pushback to gate
When it leaves BUR late, does that still matter by the time it reaches DEN?
UA1191 pushes back an average of 6.1 minutes late and reaches the gate at DEN an average of 3.2 minutes early. The 9.3 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. It spends 19.4 minutes on the taxiways at BUR, 2.5 minutes longer than a typical BUR departure in the same hour.
On arrival at DEN, UA1191 spends 7.5 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 2.3 minutes shorter than a typical DEN arrival (9.8 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached DEN. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 6,836 departures from BUR scheduled in the clock hour UA1191 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at DEN (963,027 flights), not just UA1191’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026
The hour it leaves BUR
Part of any flight’s record belongs to the clock rather than to the flight. UA1191 has one departure time, so this is what that time is worth.
On-time arrival rate. 6,836 departures from BUR are scheduled in the 9 AM–10 AM hour over the period, against 93,645 across the whole day.
UA1191 is scheduled out of BUR at 9:00 AM, in the 9 AM–10 AM bank. Departures from BUR in that hour arrive on time 89.4% of the time against 82.8% across the airport’s whole day — the slot alone is worth 6.6 points better before anything about this particular flight is considered.
The two airport figures cover every departure from BUR to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026 · Hours below 120 departures are not scored.
By day of week
Does UA1191 run worse on particular days?
Saturday is historically the most reliable day and Friday the least, a gap of 6.7 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026 · Days with fewer than 120 operations are not scored.
Other routes UA1191 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| DEN→BZN Denver to Bozeman | October 26, 2025 – December 1, 2025 | 36 | — |
| DEN→LGA Denver to New York | May 2–22, 2024 | 18 | — |
| DEN→TPA Denver to Tampa | December 21–30, 2023 | 9 | — |
| DEN→CMH Denver to Columbus | July 1, 2023 – September 4, 2023 | 66 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1191 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
22 min late
against a median of 13 min early
Percentiles over 1,059 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
Data and methodology
Calculated by FlyerIntel from 1,059 records of UA1191 operating BUR → DEN, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed