WN3939 SAN → COS

Southwest Airlines · San Diego, CA to Colorado Springs, CO · 24 flights observed, 2026-04-09 to 2026-06-01 · 816 mi

This flight's reliability varies a lot by day of week — 88% on-time on Fridays vs. 50% on Mondays.

WN3939 covers more than one route in the data window — the stats below are for SAN → COS, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
67%
Median delay
+6 min
90th percentile
+32 min
Cancellation rate
0%

How often is WN3939 on time?

Across 24 flights on SAN → COS from 2026-04-09 to 2026-06-01, WN3939 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was +6 min, and the worst 10% of flights arrived +32 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time1667%
16-30 min521%
31-60 min28%
61-120 min14%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-041070%+3 min
2026-051362%+18 min
2026-061100%0 min

Performance by day of week

DayFlightsOn-time
Mon850%
TueNo data—
WedNo data—
Thu863%
Fri888%
SatNo data—
SunNo data—

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…