Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Diego → Chicago via Denver: arrives on time 65%
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10:00 SAN → 13:37 DENF9 4990 · Frontier · 2h 36m · 81% on time, 2.2% cancelled
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3h 28m layover in Denver (DEN) · 45 min minimum on one ticket
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17:05 DEN → 20:43 ORDF9 3174 · Frontier · 2h 38m · 68% on time, 2.8% cancelled
Total trip 8h 43m, scheduled departure to arrival (Chicago is 2 h ahead of San Diego). Times are local. Both flew on 55 of the last 56 days.
Makes the connection100%The first flight arrived more than 163 minutes late on 0% of the days it flew: too late for the 45-minute minimum connection on a 3h 28m layover.
Arrives on time65%First flight not cancelled (2.2% are) × connection made (100%) × second flight not cancelled (2.8% are) and within 15 minutes (68%).
Total trip8h 43mSAN 10:00 to ORD 20:43, layover included
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.