About 1 in 3 DL 4338 flights from Detroit arrived 15+ minutes late, diverted or cancelled over the past year (35%); 14.3% were cancelled. The typical flight landed 10 minutes early.
DL 4338: DTW → PLN
Scheduled to leave Detroit at 12:15 p.m. local time, operated by SkyWest as OO 4338. Over the past year it arrived on time 65% of the time (336 flights), better than other DL flights on the route at that hour (52%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 52 | 63% |
| Tuesday | 41 | 66% |
| Wednesday | 40 | 63% |
| Thursday | 51 | 59% |
| Friday | 50 | 74% |
| Saturday | 51 | 71% |
| Sunday | 51 | 63% |
Why it was late
All flights DTW → PLN · Connecting off DL 4338? Check the risk
DL 4338: PLN → DTW
Scheduled to leave Pellston at 2:05 p.m. local time, operated by SkyWest as OO 4338. Over the past year it arrived on time 71% of the time (336 flights), better than other DL flights on the route at that hour (59%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 52 | 71% |
| Tuesday | 41 | 66% |
| Wednesday | 40 | 65% |
| Thursday | 51 | 73% |
| Friday | 50 | 76% |
| Saturday | 51 | 78% |
| Sunday | 51 | 65% |
Why it was late
All flights PLN → DTW · Connecting off DL 4338? Check the risk
Questions
How often is DL 4338 from DTW to PLN late?
Delta Air Lines 4338 from Detroit, MI to Pellston, MI arrived 15 or more minutes late, was diverted or was cancelled on 35% of 336 scheduled flights between September 2025 and August 2026. 14.3% were cancelled.
How often is DL 4338 from PLN to DTW late?
Delta Air Lines 4338 from Pellston, MI to Detroit, MI arrived 15 or more minutes late, was diverted or was cancelled on 29% of 336 scheduled flights between September 2025 and August 2026. 14.3% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.