PHX → DEN Southwest Airlines

Southwest Airlines · Phoenix, AZ to Denver, CO · 3,942 flights, 2025-07-01 to 2026-06-30 · aggregated across 209 flight numbers

This route runs much more reliably at some times of day than others — 97% on-time departing 3–6am vs. 56% departing 3–6pm.
On-time arrival
74%
Median delay
0 min
90th percentile
+52 min
Cancellation rate
1%

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

Across every Southwest Airlines flight number on PHX → DEN (3,942 flights, 2025-07-01 to 2026-06-30), 74% arrived within 15 minutes of schedule. Median arrival delay 0 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-time2,87774%
16-30 min3589%
31-60 min3539%
61-120 min2176%
2+ hrs952%

Performance by month

MonthFlightsOn-timeAvg delay
2025-0732164%+23 min
2025-0829569%+18 min
2025-0928378%+12 min
2025-1035276%+8 min
2025-1130479%+7 min
2025-1231975%+12 min
2026-0128683%+2 min
2026-0228978%+10 min
2026-0338472%+13 min
2026-0436580%+3 min
2026-0536870%+14 min
2026-0633463%+19 min

Performance by day of week

DayFlightsOn-time
Mon59072%
Tue57079%
Wed55177%
Thu57771%
Fri58071%
Sat46780%
Sun56568%

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