Flight Reliability
WN 66 · Southwest Airlines
Houston → Dallas (HOU–DAL)
47
Bring Snacks
WanderNerd Reliability Score
- 56%
- Arrive within 15 minutes
- 26 min
- Average arrival delay
- 2.3%
- Cancelled
- 9 min
- Median arrival delay
Based on 44 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
WN 66 arrived on time 67% of the time on Fridays and just 50% on Mondays. That gap is worth planning around.
Well behind the HOU–DAL route.
WN 66 arrived on time 56% of the time, versus 82% across the HOU–DAL route.
Well behind the Southwest Airlines network.
WN 66 arrived on time 56% of the time, versus 78% across the Southwest Airlines network.
The breakdown
- Mon50%(12 flights)
- Tue—(0 flights)
- Wed—(0 flights)
- Thu58%(12 flights)
- Fri67%(12 flights)
- Sat—(0 flights)
- Sun—(7 flights)
58%
Nov
Jun 33% → Nov 58% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 33% | 12 |
| July 2025 | 58% | 12 |
| November 2025 | 58% | 12 |
- Departures on time
- 51%
- Diverted
- 0%
- Flights flown
- 43
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 44 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.