Flight OddsDL1021 ATL → GSP
Delta Air Lines · Atlanta, GA to Greer, SC · 166 flights observed, 2026-01-05 to 2026-06-30 · 153 mi
DL1021 covers more than one route in the data window — the stats below are for ATL → GSP, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
84%
Median delay
-5 min
90th percentile
+43 min
Cancellation rate
1%
How often is DL1021 on time?
Across 166 flights on ATL → GSP from 2026-01-05 to 2026-06-30, DL1021 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +43 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 137 | 84% |
| 16-30 min | 6 | 4% |
| 31-60 min | 9 | 5% |
| 61-120 min | 10 | 6% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 21 | 86% | +3 min |
| 2026-02 | 23 | 91% | +4 min |
| 2026-03 | 30 | 77% | +12 min |
| 2026-04 | 29 | 93% | -4 min |
| 2026-05 | 31 | 81% | +6 min |
| 2026-06 | 30 | 77% | +5 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 26 | 77% |
| Tue | 26 | 81% |
| Wed | 25 | 92% |
| Thu | 25 | 92% |
| Fri | 25 | 84% |
| Sat | 16 | 88% |
| Sun | 21 | 71% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…