About 1 in 3 UA 5551 flights from Idaho Falls arrived 15+ minutes late, diverted or cancelled over the past year (33%); 0.5% were cancelled. The typical flight landed 1 minutes early.
UA 5551: IDA → DEN
Scheduled to leave Idaho Falls at 5:54 p.m. local time, operated by SkyWest as OO 5551. Over the past year it arrived on time 67% of the time (215 flights), in line with other UA flights on the route at that hour (69%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from Idaho Falls to Denver (100% of days). United Airlines's last IDA–DEN flight was cancelled 0.5% of the time, against 0.3% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 7:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 34 | 62% |
| Tuesday | 25 | 80% |
| Wednesday | 33 | 79% |
| Thursday | 33 | 64% |
| Friday | 33 | 64% |
| Saturday | 24 | 63% |
| Sunday | 33 | 64% |
Why it was late
All flights IDA → DEN · Connecting off UA 5551? Check the risk
Questions
How often is UA 5551 from IDA to DEN late?
United Airlines 5551 from Idaho Falls, ID to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 33% of 215 scheduled flights between September 2025 and August 2026. 0.5% 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.