About 1 in 9 UA 5661 flights from Santa Fe arrived 15+ minutes late, diverted or cancelled over the past year (12%); 0.6% were cancelled. The typical flight landed 17 minutes early.
UA 5661: SAF → DEN
Scheduled to leave Santa Fe at 10:30 a.m. local time, operated by SkyWest as OO 5661. Over the past year it arrived on time 88% of the time (180 flights), better than other UA flights on the route at that hour (85%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 26 | 92% |
| Tuesday | 25 | 84% |
| Wednesday | 25 | 96% |
| Thursday | 26 | 88% |
| Friday | 26 | 73% |
| Saturday | 26 | 92% |
| Sunday | 26 | 92% |
Why it was late
All flights SAF → DEN · Connecting off UA 5661? Check the risk
Questions
How often is UA 5661 from SAF to DEN late?
United Airlines 5661 from Santa Fe, NM to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 12% of 180 scheduled flights between September 2025 and August 2026. 0.6% 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.