About 1 in 3 UA 5377 flights from Denver arrived 15+ minutes late, diverted or cancelled over the past year (30%); 1.6% were cancelled. The typical flight landed 3 minutes early.
UA 5377: DEN → GUC
Scheduled to leave Denver at 7:25 p.m. local time, operated by SkyWest as OO 5377. Over the past year it arrived on time 70% of the time (321 flights), in line with other UA flights on the route at that hour (71%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from Denver to Gunnison (100% of days). United Airlines's last DEN–GUC flight was cancelled 1.4% of the time, against 0.5% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 11:15 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 47 | 66% |
| Tuesday | 46 | 83% |
| Wednesday | 46 | 70% |
| Thursday | 45 | 67% |
| Friday | 46 | 67% |
| Saturday | 45 | 71% |
| Sunday | 46 | 70% |
Why it was late
All flights DEN → GUC · Connecting off UA 5377? Check the risk
UA 5377: SAF → DEN
Scheduled to leave Santa Fe at 3:22 p.m. local time, operated by SkyWest as OO 5377. Over the past year it arrived on time 72% of the time (155 flights), in line with other UA flights on the route at that hour (74%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 23 | 65% |
| Tuesday | 22 | 91% |
| Wednesday | 22 | 64% |
| Thursday | 22 | 64% |
| Friday | 22 | 64% |
| Saturday | 21 | 76% |
| Sunday | 23 | 83% |
Why it was late
All flights SAF → DEN · Connecting off UA 5377? Check the risk
Questions
How often is UA 5377 from DEN to GUC late?
United Airlines 5377 from Denver, CO to Gunnison, CO arrived 15 or more minutes late, was diverted or was cancelled on 30% of 321 scheduled flights between September 2025 and August 2026. 1.6% were cancelled.
How often is UA 5377 from SAF to DEN late?
United Airlines 5377 from Santa Fe, NM to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 28% of 155 scheduled flights between September 2025 and August 2026. 2.6% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.