WN4248 OAK → MDW

Southwest Airlines · Oakland, CA to Chicago, IL · 58 flights observed, 2026-01-06 to 2026-03-04 · 1,844 mi

This flight runs much more reliably at some times of day than others — 96% on-time departing 6–9am vs. 60% departing 3–6am.

WN4248 covers more than one route in the data window — the stats below are for OAK → MDW, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
88%
Median delay
-9 min
90th percentile
+20 min
Cancellation rate
0%

How often is WN4248 on time?

Across 58 flights on OAK → MDW from 2026-01-06 to 2026-03-04, WN4248 arrived within 15 minutes of schedule 88% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +20 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time5188%
16-30 min59%
31-60 min12%
61-120 min12%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-012685%-2 min
2026-022893%-8 min
2026-03475%-5 min

Performance by day of week

DayFlightsOn-time
Mon888%
Tue989%
Wed989%
Thu888%
Fri8100%
Sat875%
Sun888%

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