Flight Reliability
DL 4238 · Delta Air Lines
ABR → Minneapolis (ABR–MSP)
94
Nerd Approved
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 0.8%
- Cancelled
- 19 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
DL 4238 arrived on time 94% of the time on Tuesdays. On Fridays: 85%.
Better than the Delta Air Lines network average.
DL 4238 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.
Ticking up lately.
DL 4238 arrived on time 90% of the time over the last three months in the data, compared with 87% in the three months before that.
The breakdown
- Mon87%(52 flights)
- Tue94%(52 flights)
- Wed90%(52 flights)
- Thu90%(52 flights)
- Fri85%(52 flights)
- Sat88%(51 flights)
- Sun92%(51 flights)
- 6–9 AM90%(361 flights)
- 9 AM–12 PM—(1 flights)
100%
May
Jun 93% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 93% | 30 |
| July 2025 | 87% | 31 |
| August 2025 | 90% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 100% | 31 |
| November 2025 | 87% | 30 |
| December 2025 | 80% | 30 |
| January 2026 | 90% | 31 |
| February 2026 | 89% | 28 |
| March 2026 | 87% | 30 |
| April 2026 | 83% | 29 |
| May 2026 | 100% | 31 |
- Departures on time
- 90%
- Diverted
- 0%
- Flights flown
- 362
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.