About 1 in 5 DL 2427 flights from Colorado Springs arrived 15+ minutes late, diverted or cancelled over the past year (20%); 1.8% were cancelled. The typical flight landed 15 minutes early.
DL 2427: COS → ATL
Scheduled to leave Colorado Springs at 1:40 p.m. local time. Over the past year it arrived on time 80% of the time (228 flights), worse than other DL flights on the route at that hour (83%). Last seen in the data Aug 31, 2026.
Usually Delta Air Lines's last flight of the day from Colorado Springs to Atlanta (73% of days). Delta Air Lines's last COS–ATL flight was cancelled 0.9% of the time, against 0.4% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 6:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 34 | 76% |
| Tuesday | 34 | 85% |
| Wednesday | 34 | 85% |
| Thursday | 34 | 85% |
| Friday | 34 | 88% |
| Saturday | 25 | 64% |
| Sunday | 33 | 70% |
Why it was late
All flights COS → ATL · Connecting off DL 2427? Check the risk
DL 2427: ATL → COS
Scheduled to leave Atlanta at 11:30 a.m. local time. Over the past year it arrived on time 82% of the time (228 flights), in line with other DL flights on the route at that hour (83%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 34 | 76% |
| Tuesday | 34 | 79% |
| Wednesday | 34 | 94% |
| Thursday | 34 | 85% |
| Friday | 34 | 91% |
| Saturday | 25 | 72% |
| Sunday | 33 | 73% |
Why it was late
All flights ATL → COS · Connecting off DL 2427? Check the risk
Questions
How often is DL 2427 from COS to ATL late?
Delta Air Lines 2427 from Colorado Springs, CO to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 20% of 228 scheduled flights between September 2025 and August 2026. 1.8% were cancelled.
How often is DL 2427 from ATL to COS late?
Delta Air Lines 2427 from Atlanta, GA to Colorado Springs, CO arrived 15 or more minutes late, was diverted or was cancelled on 18% of 228 scheduled flights between September 2025 and August 2026. 1.8% 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.