About 1 in 10 WN 15 flights from Dallas arrived 15+ minutes late, diverted or cancelled over the past year (10%); 2.5% were cancelled. The typical flight landed 12 minutes early.
WN 15: DAL → HOU
Scheduled to leave Dallas at 10:00 a.m. local time. Over the past year it arrived on time 90% of the time (157 flights), better than other WN flights on the route at that hour (86%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 24 | 88% |
| Tuesday | 22 | 100% |
| Wednesday | 25 | 88% |
| Thursday | 27 | 89% |
| Friday | 24 | 96% |
| Saturday | 17 | — |
| Sunday | 18 | — |
Why it was late
All flights DAL → HOU · Connecting off WN 15? Check the risk
Questions
How often is WN 15 from DAL to HOU late?
Southwest Airlines 15 from Dallas, TX to Houston, TX arrived 15 or more minutes late, was diverted or was cancelled on 10% of 157 scheduled flights between September 2025 and August 2026. 2.5% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Southwest Airlines for today's flight. Method.