Which airline is most reliable for BIL (Billings) to ORD (Chicago)?

The most reliable airline on the BIL to ORD route is SkyWest Airlines, with an on-time arrival rate of 81%.

How often are flights delayed from BIL to ORD?

About 21% of flights from BIL to ORD experience delays. 79% arrive on time.

What's the average delay on BIL to ORD flights?

When flights from BIL to ORD are delayed, the average delay is approximately 91 minutes.

Is a short connection safe after a BIL to ORD flight?

With 79% of BIL to ORD flights arriving on time and an average delay of 91 minutes when late, a connection under 60 minutes at ORD is risky. We recommend at least 75-90 minutes for domestic connections after this route.

BIL → ORD

BIL (Billings) to ORD (Chicago)

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 91 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated October 2026.

BIL → ORD on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

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 time

Expect ~18 min sitting on the taxiway after your gate pushes back. BIL has long runway queues.

TSA is currently ~23 min. Best time: 4 AM (about 5 min).

More about BIL →

Arriving at ORD

77% on time

When flights into ORD are late, the average delay is 79 minutes. Build buffer if you have ground plans.

If connecting at ORD: TSA is ~36 min right now. Allow at least 60 minutes for a domestic connection.

More about ORD →Connection times at ORD →

Flight cancelled or delayed?

Check what SkyWest Airlines owes you — refund rights, action plan, complaint email. Free.

Flying out of BIL? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

BIL Airport ORD Airport

Check the return: ORD → BIL

Flying this route?

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Data last updated October 2026. Source: Bureau of Transportation Statistics.