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Flight Reliability

WN 3 · Southwest Airlines

Dallas → Houston (DAL–HOU)84% of its flights flew this route. The rest (MCI–DAL, HOU–CRP) are included in these numbers.

96
Nerd Approved
WanderNerd Reliability Score
94%
Arrive within 15 minutes
6 min early
Average arrival delay
0.8%
Cancelled
10 min early
Median arrival delay

Based on 119 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 3–6 AM arrived on time 100% of the time, against 94% between 6–9 AM.

Well ahead of the DAL–HOU route.

WN 3 arrived on time 94% of the time, versus 75% across the DAL–HOU route.

Well ahead of the Southwest Airlines network.

WN 3 arrived on time 94% of the time, versus 78% across the Southwest Airlines network.

The breakdown

On-time by weekday
  • Mon—(7 flights)
  • Tue93%(15 flights)
  • Wed94%(18 flights)
  • Thu—(8 flights)
  • Fri—(6 flights)
  • Sat92%(50 flights)
  • Sun92%(13 flights)
On-time by departure window
  • 3–6 AM100%(13 flights)
  • 6–9 AM94%(99 flights)
  • 9 AM–12 PM—(5 flights)
On-time trend by month
90%
May

Jun 100% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%11
July 2025100%10
November 202588%16
December 202596%22
January 2026100%21
May 202690%10
Departures on time
96%
Diverted
0.8%
Flights flown
117
Months covered
11

Same route, other flights

Keep nerding

Based on 119 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.