BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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MDW→SFO

Southwest Airlines Chicago, IL (MDW) to San Francisco, CA (SFO) reliability

Among 455 scheduled Southwest Airlines flights from MDW to SFO, 48.6% arrived on time, 35.8% arrived at least 30 minutes late, and 1.3% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Marketing carrier: Southwest Airlines (WN) · Updated September 16, 2026

HISTORICAL ROUTE SIGNALHigher disruption
48.6%arrived on time
35.8%30+ min late
1.3%cancelled
455scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late35.8%
60+ minutes late15.2%
Cancelled1.3%
Average arrival+27.1 mincompleted flights

What did Southwest Airlines MDW to SFO record?

Southwest Airlines completed 98.5% of its scheduled reportable MDW to SFO flights in the observation window. 48.6% of all scheduled flights arrived less than 15 minutes late, while 15.2% arrived at least an hour late.

What were Southwest Airlines MDW to SFO disruption rates?

For Southwest Airlines MDW-to-SFO flights, 35.8% arrived at least 30 minutes late, 1.3% were cancelled, and 0.2% were diverted.

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What was the Southwest Airlines MDW to SFO scheduled cohort?

The Southwest Airlines MDW-to-SFO cohort contained 455 scheduled flights; 448 completed, 6 were cancelled, and 1 were diverted.

Not a prediction.

This is a descriptive historical rate. Schedule changes, seasonal operations and current conditions may differ.