Flight OddsDL1223 ATL → IAH
Delta Air Lines · Atlanta, GA to Houston, TX · 133 flights observed, 2025-12-20 to 2026-06-26 · 689 mi
DL1223 covers more than one route in the data window — the stats below are for ATL → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
71%
Median delay
-2 min
90th percentile
+60 min
Cancellation rate
3%
How often is DL1223 on time?
Across 133 flights on ATL → IAH from 2025-12-20 to 2026-06-26, DL1223 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +60 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 | 92 | 71% |
| 16-30 min | 13 | 10% |
| 31-60 min | 11 | 9% |
| 61-120 min | 10 | 8% |
| 2+ hrs | 3 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 11 | 91% | -1 min |
| 2026-01 | 25 | 56% | +15 min |
| 2026-02 | 25 | 80% | +5 min |
| 2026-03 | 6 | 83% | +2 min |
| 2026-04 | 18 | 89% | +2 min |
| 2026-05 | 27 | 70% | +10 min |
| 2026-06 | 17 | 47% | +31 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 20 | 65% |
| Tue | 19 | 63% |
| Wed | 19 | 84% |
| Thu | 22 | 77% |
| Fri | 22 | 68% |
| Sat | 8 | 75% |
| Sun | 19 | 68% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…