Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Antonio → Boston via Nashville: arrives on time 29%
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16:55 SAT → 19:10 BNAWN 4193 · Southwest · 2h 15m · 27% on time, 0.0% cancelled
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1h 25m layover in Nashville (BNA) · 45 min minimum on one ticket
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20:35 BNA → 00:55 BOS +1 dayWN 459 · Southwest · 2h 35m · 43% on time, 0.0% cancelled
Total trip 6h 15m, scheduled departure to arrival (Boston is 1 h ahead of San Antonio). Times are local. Both flew on 48 of the last 56 days.
Makes the connection67%The first flight arrived more than 40 minutes late on 33% of the days it flew: too late for the 45-minute minimum connection on a 1h 25m layover.
Arrives on time29%First flight not cancelled (0.0% are) × connection made (67%) × second flight not cancelled (0.0% are) and within 15 minutes (43%).
Total trip6h 15mSAT 16:55 to BOS 00:55, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.