Spirit Airlines Miami, FL (MIA) to Boston, MA (BOS) reliability

Among 186 scheduled Spirit Airlines flights from MIA to BOS, 50.5% arrived on time, 32.3% arrived at least 30 minutes late, and 6.5% were cancelled during July 2025–June 2026.

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

HISTORICAL ROUTE SIGNALHigher disruption

50.5%arrived on time

32.3%30+ min late

6.5%cancelled

186scheduled flights

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

30+ minutes late32.3%

60+ minutes late25.3%

Cancelled6.5%

Average arrival+27.5 mincompleted flights

What did Spirit Airlines MIA to BOS record?

Spirit Airlines completed 93.0% of its scheduled reportable MIA to BOS flights in the observation window. 50.5% of all scheduled flights arrived less than 15 minutes late, while 25.3% arrived at least an hour late.

What were Spirit Airlines MIA to BOS disruption rates?

For Spirit Airlines MIA-to-BOS flights, 32.3% arrived at least 30 minutes late, 6.5% were cancelled, and 0.5% were diverted.

Compare all airlines on this route

What was the Spirit Airlines MIA to BOS scheduled cohort?

The Spirit Airlines MIA-to-BOS cohort contained 186 scheduled flights; 173 completed, 12 were cancelled, and 1 were diverted.

Not a prediction.

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