Flight OddsDL631 ATL → CHA
Delta Air Lines · Atlanta, GA to Chattanooga, TN · 36 flights observed, 2026-03-08 to 2026-04-12 · 106 mi
DL631 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
92%
Median delay
-13 min
90th percentile
+4 min
Cancellation rate
0%
How often is DL631 on time?
Across 36 flights on ATL → CHA from 2026-03-08 to 2026-04-12, DL631 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -13 min, and the worst 10% of flights arrived +4 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 33 | 92% |
| 16-30 min | 0 | 0% |
| 31-60 min | 2 | 6% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 24 | 88% | +6 min |
| 2026-04 | 12 | 100% | -17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 5 | 100% |
| Wed | 5 | 100% |
| Thu | 5 | 80% |
| Fri | 5 | 100% |
| Sat | 5 | 100% |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…