DEN → PHX Southwest Airlines

Southwest Airlines · Denver, CO to Phoenix, AZ · 3,950 flights, 2025-07-01 to 2026-06-30 · aggregated across 208 flight numbers

This route runs much more reliably at some times of day than others — 94% on-time departing 3–6am vs. 53% departing 6–9pm.
On-time arrival
73%
Median delay
-1 min
90th percentile
+52 min
Cancellation rate
1%

How on-time is Southwest Airlines from DEN to PHX?

Across every Southwest Airlines flight number on DEN → PHX (3,950 flights, 2025-07-01 to 2026-06-30), 73% arrived within 15 minutes of schedule. Median arrival delay -1 min; the worst 10% ran +52 min or later. 1% were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2,84973%
16-30 min38510%
31-60 min3489%
61-120 min2206%
2+ hrs972%

Performance by month

MonthFlightsOn-timeAvg delay
2025-0732360%+24 min
2025-0829176%+15 min
2025-0928177%+8 min
2025-1034969%+13 min
2025-1130873%+8 min
2025-1232868%+14 min
2026-0128682%-3 min
2026-0228882%+2 min
2026-0338076%+7 min
2026-0436383%+2 min
2026-0536573%+9 min
2026-0633759%+23 min

Performance by day of week

DayFlightsOn-time
Mon58471%
Tue57079%
Wed55075%
Thu58071%
Fri57472%
Sat46877%
Sun57368%

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