BIL (Billings) to ORD (Chicago) flights arrive on time 79% of the time. The most reliable airline on this route is SkyWest Airlines at 81%. The average delay is 88 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated March 2026.BIL → ORD
BIL (Billings) to ORD (Chicago)
BIL → ORD on-time performance by month
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This route is on time most of the time. About 79% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Airlines are roughly equal on this route — SkyWest Airlines leads slightly at 81% vs null at 79%.
Airline Comparison
SkyWest Airlines leads at 81% on time; trails at 79%.
Accurate?
Good to know
Departing from BIL
83% on timeExpect ~17 min sitting on the taxiway after your gate pushes back. BIL has long runway queues.
TSA is currently ~30 min. Best time: 4 AM (about 5 min).
Arriving at ORD
80% on timeWhen flights into ORD are late, the average delay is 76 minutes. Build buffer if you have ground plans.
If connecting at ORD: TSA is ~10 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
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Data last updated March 2026. Source: Bureau of Transportation Statistics.