Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
WN 4123 · San Antonio (SAT) → Phoenix (PHX)
Sold by Southwest. Still flying: 47 of the last 56 days (Mon–Sat).
Arrives on time94%within 15 minutes, of 49 flights
Cancelled0.0%of scheduled flights
An hour or more late2%of flights that operated
When late, on average50 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Phoenix is 2 h behind San Antonio).
- Leaves SAT
- 06:45
- Arrives PHX
- 07:05
- Flight time
- 2h 20m
- Days flown, last 8 weeks
- 47 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at SAT
All flights leaving San Antonio (SAT) at 6–7 am, wherever they’re going: 93% left within 15 minutes and 1.4% were cancelled (4,846 flights in the year). Other Southwest flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.