Flight Reliability
DL 1991 · Delta Air Lines
Minneapolis → FAR (MSP–FAR)91% of its flights flew this route. The rest (SFO–SLC) are included in these numbers.
89
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0%
- Cancelled
- 6 min early
- Median arrival delay
Based on 213 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
DL 1991 arrived on time 90% of the time on Wednesdays and just 68% on Mondays. That gap is worth planning around.
It basically never cancels.
Out of 213 scheduled flights, only 0.0% were cancelled.
Recent months have been rougher.
DL 1991 arrived on time 76% of the time over the last three months in the data, compared with 90% in the three months before that.
The breakdown
- Mon68%(31 flights)
- Tue84%(31 flights)
- Wed90%(31 flights)
- Thu77%(31 flights)
- Fri75%(32 flights)
- Sat85%(26 flights)
- Sun87%(31 flights)
75%
May
Jun 61% → May 75% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 61% | 23 |
| July 2025 | 74% | 31 |
| August 2025 | 81% | 31 |
| September 2025 | 97% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 89% | 28 |
| December 2025 | 63% | 19 |
| May 2026 | 75% | 20 |
- Departures on time
- 78%
- Diverted
- 0%
- Flights flown
- 213
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 213 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.