WN2012 BOS → MDW

Southwest Airlines · Boston, MA to Chicago, IL · 46 flights observed, 2025-11-02 to 2026-01-05 · 861 mi

This flight's reliability varies a lot by day of week — 100% on-time on Tuesdays vs. 63% on Wednesdays.

WN2012 covers more than one route in the data window — the stats below are for BOS → MDW, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
80%
Median delay
-2 min
90th percentile
+34 min
Cancellation rate
2%

How often is WN2012 on time?

Across 46 flights on BOS → MDW from 2025-11-02 to 2026-01-05, WN2012 arrived within 15 minutes of schedule 80% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +34 min or later. 2% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3680%
16-30 min49%
31-60 min37%
61-120 min24%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2025-112383%+1 min
2025-122080%+6 min
2026-01250%+29 min

Performance by day of week

DayFlightsOn-time
Mon683%
Tue6100%
Wed863%
Thu863%
Fri667%
Sat4100%
Sun7100%

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