Chicago (ORD) to Billings (BIL): On-Time Performance
Data through July 2026
Chicago (ORD) to Billings (BIL) is a thinner route than most in this dataset — 316 departures over the past year, roughly 6 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 83% arrived on time, comfortably above the national average of 78%.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 0.3%
- Flights/day
- 0.87
- last 12 months
- Duration
- 3h 13m
- scheduled
- Distance
- 1,060 mi
Best airline from ORD to BIL
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 85% | 10 min | 0.5% | 442 |
| SkyWest Airlines | 78% | 10 min | 0.0% | 157 |
Monthly on-time trend
Best time to fly from ORD to BIL
Aim for departures around 8 a.m. (88% on-time); avoid 8 p.m. departures (76%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 11 min |
| Tuesdaybest | 92% | 5 min |
| Wednesday | 80% | 10 min |
| Thursday | 82% | 17 min |
| Friday | 81% | 10 min |
| Saturday | 80% | 10 min |
| Sunday | 85% | 7 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations37%
- National airspace system15%
- Weather8%
Frequently asked questions
- How often are flights from ORD to BIL delayed?
- 17% of ORD–BIL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 10 minutes.
- Which airline is most reliable from ORD to BIL?
- Envoy Air has the best on-time record on this route at 85%, based on 442 flights. 2 airlines flew ORD–BIL frequently enough to compare in this period.
- What is the best time of day to fly from ORD to BIL?
- Departures around 8 a.m. have the best record (88% on-time), while departures around 8 p.m. have the worst (76%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to BIL?
- The scheduled ORD–BIL flight time averages 3h 13m over 1,060 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are ORD to BIL flights cancelled?
- 0.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What day of the week is most reliable for ORD to BIL?
- Tuesday flights have the best record at 92% on-time. Day-of-week differences on this route are meaningful — Wednesday trails at 80%.
Explore related pages
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Related guides
Based on 599 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.