WN3579 MDW → PDX

Southwest Airlines · Chicago, IL to Portland, OR · 58 flights observed, 2026-04-07 to 2026-06-03 · 1,751 mi

This flight runs much more reliably at some times of day than others — 83% on-time departing 9am–12pm vs. 34% departing 9pm–12am.

WN3579 covers more than one route in the data window — the stats below are for MDW → PDX, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
55%
Median delay
+10 min
90th percentile
+71 min
Cancellation rate
3%

How often is WN3579 on time?

Across 58 flights on MDW → PDX from 2026-04-07 to 2026-06-03, WN3579 arrived within 15 minutes of schedule 55% of the time. The median arrival delay was +10 min, and the worst 10% of flights arrived +71 min or later. 3% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3155%
16-30 min1425%
31-60 min47%
61-120 min611%
2+ hrs12%

Performance by month

MonthFlightsOn-timeAvg delay
2026-042352%+17 min
2026-053053%+24 min
2026-063100%-10 min

Performance by day of week

DayFlightsOn-time
Mon850%
Tue967%
Wed9100%
Thu714%
Fri743%
Sat863%
Sun838%

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