Southwest Airlines departures from Boston, MA (BOS)

Among 7,197 scheduled Southwest Airlines flights departing BOS, 70.0% arrived on time, 18.6% arrived at least 30 minutes late, and 1.5% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Origin and marketing-carrier cohort · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable

70.0%arrived on time

18.6%30+ min late

1.5%cancelled

7,197scheduled flights

Based on July 2025–June 2026; on time means arrival less than 15 minutes late.

30+ minutes late18.6%

60+ minutes late9.4%

Cancelled1.5%

Diverted0.2%

What does the Southwest Airlines BOS sample show?

Southwest Airlines completed 98.2% of its scheduled departures from BOS; 9.4% arrived at least one hour late and 0.2% were diverted.

What were Southwest Airlines at BOS disruption rates?

For Southwest Airlines departures from BOS, 18.6% arrived at least 30 minutes late, 1.5% were cancelled, and 0.2% were diverted.

Compare all airlines at BOS

How large was the Southwest Airlines cohort at BOS?

The Southwest Airlines cohort at BOS contained 7,197 scheduled flights, including 7,070 completed flights, 110 cancellations, and 17 diversions.