Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Houston via Columbus: arrives on time 45%
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16:40 MDW → 18:55 CMHWN 4594 · Southwest · 1h 15m · 64% on time, 4.1% cancelled
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1h 00m layover in Columbus (CMH) · 45 min minimum on one ticket
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19:55 CMH → 21:35 HOUWN 1190 · Southwest · 2h 40m · 73% on time, 0.0% cancelled
Total trip 4h 55m, scheduled departure to arrival. Times are local. Both flew on 24 of the last 56 days.
Makes the connection64%The first flight arrived more than 15 minutes late on 36% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time45%First flight not cancelled (4.1% are) × connection made (64%) × second flight not cancelled (0.0% are) and within 15 minutes (73%).
Total trip4h 55mMDW 16:40 to HOU 21:35, 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.