About 1 in 8 DL 2171 flights from Detroit arrived 15+ minutes late, diverted or cancelled over the past year (12%); 0.0% were cancelled. The typical flight landed 4 minutes early.
DL 2171: DTW → PDX
Scheduled to leave Detroit at 8:40 a.m. local time. Over the past year it arrived on time 88% of the time (150 flights), better than other DL flights on the route at that hour (83%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 23 | 91% |
| Tuesday | 22 | 91% |
| Wednesday | 22 | 82% |
| Thursday | 22 | 91% |
| Friday | 22 | 86% |
| Saturday | 17 | — |
| Sunday | 22 | 82% |
Why it was late
All flights DTW → PDX · Connecting off DL 2171? Check the risk
DL 2171: PDX → DTW
Scheduled to leave Portland at 11:55 a.m. local time. Over the past year it arrived on time 83% of the time (150 flights), in line with other DL flights on the route at that hour (82%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 23 | 96% |
| Tuesday | 22 | 82% |
| Wednesday | 22 | 77% |
| Thursday | 22 | 86% |
| Friday | 22 | 82% |
| Saturday | 17 | — |
| Sunday | 22 | 77% |
Why it was late
All flights PDX → DTW · Connecting off DL 2171? Check the risk
Questions
How often is DL 2171 from DTW to PDX late?
Delta Air Lines 2171 from Detroit, MI to Portland, OR arrived 15 or more minutes late, was diverted or was cancelled on 12% of 150 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.
How often is DL 2171 from PDX to DTW late?
Delta Air Lines 2171 from Portland, OR to Detroit, MI arrived 15 or more minutes late, was diverted or was cancelled on 17% of 150 scheduled flights between September 2025 and August 2026. 0.0% 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.