Flight Reliability
WN 4942 · Southwest Airlines
Denver → Ontario (DEN–ONT)95% of its flights flew this route. The rest (HOU–SMF, MCI–MDW) are included in these numbers.
94
Nerd Approved
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 7 min early
- Average arrival delay
- 0%
- Cancelled
- 18 min early
- Median arrival delay
Based on 56 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
WN 4942 departing between 6–9 AM arrived on time 93% of the time, versus 78% between 6–9 PM.
Better than the DEN–ONT route average.
WN 4942 arrived on time 86% of the time, versus 75% across the DEN–ONT route.
Better than the Southwest Airlines network average.
WN 4942 arrived on time 86% of the time, versus 78% across the Southwest Airlines network.
The breakdown
- Mon—(8 flights)
- Tue—(9 flights)
- Wed—(9 flights)
- Thu—(8 flights)
- Fri—(8 flights)
- Sat—(3 flights)
- Sun73%(11 flights)
- 6–9 AM93%(28 flights)
- 12–3 PM—(1 flights)
- 6–9 PM78%(18 flights)
- 9 PM–12 AM—(9 flights)
- Departures on time
- 80%
- Diverted
- 0%
- Flights flown
- 56
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 56 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.