Flight OddsDL3921 STL → MSP
Delta Air Lines · St. Louis, MO to Minneapolis, MN · 81 flights observed, 2025-08-11 to 2026-04-12 · 448 mi
DL3921 covers more than one route in the data window — the stats below are for STL → MSP, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
66%
Median delay
-3 min
90th percentile
+77 min
Cancellation rate
1%
How often is DL3921 on time?
Across 81 flights on STL → MSP from 2025-08-11 to 2026-04-12, DL3921 arrived within 15 minutes of schedule 66% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +77 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 | 53 | 66% |
| 16-30 min | 10 | 13% |
| 31-60 min | 7 | 9% |
| 61-120 min | 7 | 9% |
| 2+ hrs | 3 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 18 | 83% | -8 min |
| 2025-09 | 23 | 61% | +14 min |
| 2025-10 | 4 | 100% | -23 min |
| 2026-03 | 23 | 48% | +53 min |
| 2026-04 | 12 | 75% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 12 | 50% |
| Tue | 12 | 58% |
| Wed | 12 | 75% |
| Thu | 13 | 77% |
| Fri | 13 | 62% |
| Sat | 5 | 60% |
| Sun | 13 | 77% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…