Flight OddsDL1821 DTW → PWM
Delta Air Lines · Detroit, MI to Portland, ME · 24 flights observed, 2026-06-07 to 2026-06-30 · 668 mi
DL1821 covers more than one route in the data window — the stats below are for DTW → PWM, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
88%
Median delay
-9 min
90th percentile
+17 min
Cancellation rate
0%
How often is DL1821 on time?
Across 24 flights on DTW → PWM from 2026-06-07 to 2026-06-30, DL1821 arrived within 15 minutes of schedule 88% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +17 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 | 21 | 88% |
| 16-30 min | 1 | 4% |
| 31-60 min | 2 | 8% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-06 | 24 | 88% | -4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 100% |
| Tue | 4 | 100% |
| Wed | 3 | 100% |
| Thu | 3 | 100% |
| Fri | 3 | 100% |
| Sat | 3 | 67% |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…