ATL → HOU Southwest Airlines

Southwest Airlines · Atlanta, GA to Houston, TX · 1,499 flights, 2025-07-01 to 2026-06-30 · aggregated across 78 flight numbers

This route runs much more reliably at some times of day than others — 93% on-time departing 6–9am vs. 55% departing 9pm–12am.
On-time arrival
80%
Median delay
-7 min
90th percentile
+35 min
Cancellation rate
1%

How on-time is Southwest Airlines from ATL to HOU?

Across every Southwest Airlines flight number on ATL → HOU (1,499 flights, 2025-07-01 to 2026-06-30), 80% arrived within 15 minutes of schedule. Median arrival delay -7 min; the worst 10% ran +35 min or later. 1% were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time1,19580%
16-30 min1238%
31-60 min815%
61-120 min584%
2+ hrs282%

Performance by month

MonthFlightsOn-timeAvg delay
2025-0713674%+16 min
2025-0813177%+9 min
2025-0912988%-1 min
2025-1013077%+10 min
2025-1113281%+5 min
2025-1213280%+4 min
2026-0112089%-8 min
2026-0210292%-8 min
2026-0311877%+5 min
2026-0411986%+1 min
2026-0512172%+10 min
2026-0611577%+6 min

Performance by day of week

DayFlightsOn-time
Mon22776%
Tue21485%
Wed20988%
Thu22379%
Fri22578%
Sat16579%
Sun22279%

Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…