Flight Reliability
WN 4971 · Southwest Airlines
Chicago → Louisville (MDW–SDF)91% of its flights flew this route. The rest (RSW–MDW, BNA–SDF) are included in these numbers.
65
Usually Fine
WanderNerd Reliability Score
- 75%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 4.7%
- Cancelled
- 6 min early
- Median arrival delay
Based on 64 historical flights. Data through May 2026.
What the data says
A bit behind the MDW–SDF route.
WN 4971 arrived on time 75% of the time, versus 80% across the MDW–SDF route.
The breakdown
- Mon—(8 flights)
- Tue—(9 flights)
- Wed—(9 flights)
- Thu—(8 flights)
- Fri—(8 flights)
- Sat50%(10 flights)
- Sun—(9 flights)
- 9 AM–12 PM—(1 flights)
- 12–3 PM—(1 flights)
- 3–6 PM—(4 flights)
- 6–9 PM75%(48 flights)
- 9 PM–12 AM—(7 flights)
- Departures on time
- 75%
- Diverted
- 0%
- Flights flown
- 61
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 64 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.