About 1 in 10 DL 4449 flights from Salt Lake City arrived 15+ minutes late, diverted or cancelled over the past year (10%); 0.0% were cancelled. The typical flight landed 10 minutes early.
DL 4449: SLC → COS
Scheduled to leave Salt Lake City at 3:51 p.m. local time, operated by SkyWest as OO 4449. Over the past year it arrived on time 90% of the time (251 flights), worse than other DL flights on the route at that hour (93%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 86% |
| Tuesday | 36 | 94% |
| Wednesday | 34 | 97% |
| Thursday | 34 | 94% |
| Friday | 36 | 83% |
| Saturday | 37 | 92% |
| Sunday | 37 | 84% |
Why it was late
All flights SLC → COS · Connecting off DL 4449? Check the risk
DL 4449: COS → SLC
Scheduled to leave Colorado Springs at 6:16 p.m. local time, operated by SkyWest as OO 4449. Over the past year it arrived on time 88% of the time (250 flights), worse than other DL flights on the route at that hour (93%). Last seen in the data Aug 31, 2026.
Usually Delta Air Lines's last flight of the day from Colorado Springs to Salt Lake City (100% of days). Delta Air Lines's last COS–SLC flight was cancelled 0.3% of the time, against 0.0% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 8:10 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 86% |
| Tuesday | 36 | 92% |
| Wednesday | 34 | 88% |
| Thursday | 34 | 94% |
| Friday | 36 | 86% |
| Saturday | 36 | 86% |
| Sunday | 37 | 84% |
Why it was late
All flights COS → SLC · Connecting off DL 4449? Check the risk
Questions
How often is DL 4449 from SLC to COS late?
Delta Air Lines 4449 from Salt Lake City, UT to Colorado Springs, CO arrived 15 or more minutes late, was diverted or was cancelled on 10% of 251 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.
How often is DL 4449 from COS to SLC late?
Delta Air Lines 4449 from Colorado Springs, CO to Salt Lake City, UT arrived 15 or more minutes late, was diverted or was cancelled on 12% of 250 scheduled flights between September 2025 and August 2026. 0.0% 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 Delta Air Lines for today's flight. Method.