Flight Reliability
DL 3543 · Delta Air Lines
Minneapolis → Chicago (MSP–MDW)96% of its flights flew this route. The rest (LGA–SDF, ATL–XNA) are included in these numbers.
88
Pretty Reliable
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 0.5%
- Cancelled
- 1 min early
- Median arrival delay
Based on 201 historical flights. Data through May 2026.
What the data says
Saturday is the weak spot.
DL 3543 arrived on time 90% of the time on Thursdays. On Saturdays: 75%.
A bit ahead of the MSP–MDW route.
DL 3543 arrived on time 84% of the time, versus 80% across the MSP–MDW route.
Recent months have been rougher.
DL 3543 arrived on time 76% of the time over the last three months in the data, compared with 87% in the three months before that.
The breakdown
- Mon89%(28 flights)
- Tue89%(28 flights)
- Wed76%(29 flights)
- Thu90%(29 flights)
- Fri83%(29 flights)
- Sat75%(28 flights)
- Sun86%(28 flights)
- 6–9 AM84%(191 flights)
- 9 AM–12 PM—(1 flights)
- 12–3 PM—(7 flights)
47%
Dec
Jun 86% → Dec 47% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 86% | 29 |
| July 2025 | 80% | 30 |
| August 2025 | 86% | 29 |
| September 2025 | 93% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 93% | 29 |
| December 2025 | 47% | 19 |
- Departures on time
- 87%
- Diverted
- 0.5%
- Flights flown
- 199
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 201 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.