Flight Reliability
DL 2591 · Delta Air Lines
Minneapolis → Boston (MSP–BOS)
70
Usually Fine
WanderNerd Reliability Score
- 67%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 0.8%
- Cancelled
- 6 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 2591 arrived on time 87% of the time on Saturdays and just 50% on Fridays. That gap is worth planning around.
Lagging the MSP–BOS route.
DL 2591 arrived on time 67% of the time, versus 79% across the MSP–BOS route.
Lagging the Delta Air Lines network.
DL 2591 arrived on time 67% of the time, versus 81% across the Delta Air Lines network.
Trending in the right direction.
DL 2591 arrived on time 79% of the time over the last three months in the data, compared with 64% in the three months before that.
The breakdown
- Mon67%(51 flights)
- Tue71%(52 flights)
- Wed69%(52 flights)
- Thu64%(52 flights)
- Fri50%(52 flights)
- Sat87%(52 flights)
- Sun63%(51 flights)
81%
May
Jun 67% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 67% | 30 |
| July 2025 | 74% | 31 |
| August 2025 | 81% | 31 |
| September 2025 | 40% | 30 |
| October 2025 | 45% | 31 |
| November 2025 | 70% | 30 |
| December 2025 | 45% | 31 |
| January 2026 | 73% | 30 |
| February 2026 | 74% | 27 |
| March 2026 | 80% | 30 |
| April 2026 | 77% | 30 |
| May 2026 | 81% | 31 |
- Departures on time
- 67%
- 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.