Flight OddsDL637 ATL → CHA
Delta Air Lines · Atlanta, GA to Chattanooga, TN · 34 flights observed, 2026-03-08 to 2026-04-12 · 106 mi
DL637 covers more than one route in the data window — the stats below are for ATL → CHA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
85%
Median delay
-4 min
90th percentile
+31 min
Cancellation rate
3%
How often is DL637 on time?
Across 34 flights on ATL → CHA from 2026-03-08 to 2026-04-12, DL637 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +31 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 28 | 85% |
| 16-30 min | 1 | 3% |
| 31-60 min | 2 | 6% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 21 | 86% | +7 min |
| 2026-04 | 12 | 83% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 100% |
| Tue | 5 | 80% |
| Wed | 5 | 100% |
| Thu | 5 | 100% |
| Fri | 5 | 100% |
| Sat | 3 | 100% |
| Sun | 6 | 33% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…