Flight Reliability
DL 2151 · Delta Air Lines
Minneapolis → Portland (MSP–PDX)
81
Pretty Reliable
WanderNerd Reliability Score
- 76%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 0.6%
- Cancelled
- 2 min early
- Median arrival delay
Based on 355 historical flights. Data through May 2026.
What the data says
Thursdays have been rough.
DL 2151 arrived on time 83% of the time on Tuesdays and just 67% on Thursdays. That gap is worth planning around.
Lagging the MSP–PDX route.
DL 2151 arrived on time 76% of the time, versus 84% across the MSP–PDX route.
A bit behind the Delta Air Lines network.
DL 2151 arrived on time 76% of the time, versus 81% across the Delta Air Lines network.
Trending in the right direction.
DL 2151 arrived on time 82% of the time over the last three months in the data, compared with 59% in the three months before that.
The breakdown
- Mon81%(52 flights)
- Tue83%(52 flights)
- Wed80%(51 flights)
- Thu67%(51 flights)
- Fri73%(51 flights)
- Sat71%(45 flights)
- Sun75%(51 flights)
80%
May
Jun 76% → May 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 29 |
| July 2025 | 65% | 31 |
| August 2025 | 87% | 31 |
| September 2025 | 93% | 30 |
| October 2025 | 90% | 30 |
| November 2025 | 75% | 28 |
| December 2025 | 45% | 31 |
| January 2026 | 61% | 31 |
| February 2026 | 71% | 28 |
| March 2026 | 76% | 29 |
| April 2026 | 90% | 30 |
| May 2026 | 80% | 25 |
- Departures on time
- 80%
- Diverted
- 0%
- Flights flown
- 353
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 355 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.