Flight OddsDL3988 DTW → IAD
Delta Air Lines · Detroit, MI to Washington, DC · 55 flights observed, 2026-05-07 to 2026-06-30 · 383 mi
DL3988 covers more than one route in the data window — the stats below are for DTW → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
69%
Median delay
-4 min
90th percentile
+71 min
Cancellation rate
0%
How often is DL3988 on time?
Across 55 flights on DTW → IAD from 2026-05-07 to 2026-06-30, DL3988 arrived within 15 minutes of schedule 69% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +71 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 | 38 | 69% |
| 16-30 min | 6 | 11% |
| 31-60 min | 4 | 7% |
| 61-120 min | 5 | 9% |
| 2+ hrs | 2 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 25 | 68% | +10 min |
| 2026-06 | 30 | 70% | +36 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 75% |
| Tue | 8 | 63% |
| Wed | 7 | 86% |
| Thu | 8 | 38% |
| Fri | 8 | 75% |
| Sat | 8 | 88% |
| Sun | 8 | 63% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…