ORD (Chicago) to BIL (Billings) flights arrive on time 81% of the time. The most reliable airline on this route is null at 83%. The average delay is 51 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated August 2026.ORD → BIL
ORD (Chicago) to BIL (Billings)
ORD → BIL on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 81% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
null edges out SkyWest Airlines on this route — 83% vs 78% on time.
Airline Comparison
leads at 83% on time; SkyWest Airlines trails at 78%.
Accurate?
Good to know
Departing from ORD
75% on timeExpect ~22 min sitting on the taxiway after your gate pushes back. ORD has long runway queues.
TSA is currently ~32 min. Best time: 4 AM (about 5 min).
Arriving at BIL
83% on timeWhen flights into BIL are late, the average delay is 72 minutes. Build buffer if you have ground plans.
If connecting at BIL: TSA is ~23 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what owes you — refund rights, action plan, complaint email. Free.
Flying out of ORD? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated August 2026. Source: Bureau of Transportation Statistics.