Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Baltimore → Boston via Houston: arrives on time 42%
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15:03 BWI → 17:19 IAHUA 2095 · United · 3h 16m · 65% on time, 0.0% cancelled
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56m layover in Houston (IAH) · 45 min minimum on one ticket
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18:15 IAH → 23:19 BOSUA 521 · United · 4h 04m · 68% on time, 0.0% cancelled
Total trip 8h 16m, scheduled departure to arrival. Times are local. Both flew on 41 of the last 56 days.
Makes the connection62%The first flight arrived more than 11 minutes late on 38% of the days it flew: too late for the 45-minute minimum connection on a 56m layover.
Arrives on time42%First flight not cancelled (0.0% are) × connection made (62%) × second flight not cancelled (0.0% are) and within 15 minutes (68%).
Total trip8h 16mBWI 15:03 to BOS 23:19, 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.