Flight profile · United Airlines
UA1959
Anchorage (ANC) to Denver (DEN) · scheduled 11:45 PM – 7:05 AM
How UA1959 performs
1,059 operations, 2023-07-01 to 2026-06-29.
Source: US DOT Bureau of Transportation Statistics · 1,059 operations between 2023-07-01 to 2026-06-29
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1959 | 85.8% | 0.66% | -11 min | 4.1% | 1,059 |
| United Airlines on ANC → DEN | 84.5% | 0.73% | -10 min | 4.4% | 1,500 |
| All ANC → DEN flights | 85.0% | 0.68% | -10 min | 4.2% | 1,925 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-29
By day of week
Does UA1959 run worse on particular days?
Tuesday is historically the most reliable day and Saturday the least, a gap of 8.9 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-29 · Days with fewer than 120 operations are not scored.
Other routes UA1959 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→SLC Denver to Salt Lake City | 2026-06-02 – 2026-06-22 | 2 | — |
| FLL→DEN Fort Lauderdale to Denver | 2026-06-05 – 2026-06-19 | 5 | — |
| DEN→LAS Denver to Las Vegas | 2026-06-11 – 2026-06-11 | 1 | — |
| DEN→IND Denver to Indianapolis | 2026-05-21 – 2026-05-25 | 3 | — |
| IAD→ORD Washington to Chicago | 2026-05-20 – 2026-05-20 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1959 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.
24 min late
against a median of 11 min early
Percentiles over 1,059 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Why UA1959 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for UA1959 on ANC → DEN. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 1,059 records of UA1959 operating ANC → 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 · Report a problem
Analysis last recomputed