Is a 30-Minute Layover Enough at ORD?
O'Hare International — Chicago
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High Risk — 55% miss rate
Probably not — a 30 minutes layover at ORD means roughly a 55% chance of missing your flight.
55%
Miss Rate
77%
On-Time Rate
78m
Avg Delay
Why 30 Minutes Is High Risk at ORD
A 30-minute connection at ORD is very risky. There's roughly a 55% chance you'll miss your connecting flight. We strongly recommend at least 154 minutes, or consider booking a direct flight.
·Airport reliability: ORD has a 77% on-time rate
−Below minimum connection time: ORD requires at least 75 minutes for domestic connections. You have 30.
−High average delay: When flights are late at ORD, the average delay is 78 minutes
−Long taxi times: Planes at ORD typically sit on the runway for 22 minutes before takeoff
Minimum Connection Time at ORD
75m
Domestic
120m
International
Your 30-minute layover is 45 minutes below the domestic minimum. Even without any delays, you may not have enough time to reach your gate.
Terminal Transfers at ORD
How to transfer: ATS automated train connects Terminals 1, 2, and 3. Terminal 5 requires a separate bus or train.
Transfer time: 5-10 minutes between Terminals 1-3; 15-25 minutes to/from Terminal 5
!TSA re-screening: Required for some terminal changes — Connections involving Terminal 5 (international) require exiting security and re-screening. Terminals 1-3 are connected post-security.
Compare Other Layover Times at ORD
Click any row to see the full analysis for that layover time.
What to Do Instead
- →Look for itineraries with 154+ minute layovers at ORD
- →Consider a direct flight if available
- →Book both legs on the same ticket (airline must rebook you if you miss the connection)
- →Choose an early morning first leg — morning flights are delayed less often
Check a Different Layover Time
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