Route Reliability
Chicago → BIL
ORD–BIL · 1,060 miles · Chicago O'Hare International Airport to BIL Airport
- 80%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 0.5%
- Cancelled
- 430
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.American Airlines81%283 flights
- 2.United Airlines80%147 flights
What the data says
Morning-you made the right choice.
ORD–BIL flights departing between 6–9 AM arrived on time 90% of the time, versus 76% between 6–9 PM.
Skip Saturday if you can.
ORD–BIL flights arrived on time 90% of the time on Tuesdays. On Saturdays: 76%.
Not much between American Airlines and United Airlines.
On this route they all land within 80% to 81% on time. Pick on schedule and price.
Trending in the right direction.
ORD–BIL flights arrived on time 88% of the time over the last three months in the data, compared with 76% in the three months before that.
Flights on this route
The breakdown
- Mon78%(60 flights)
- Tue90%(60 flights)
- Wed78%(60 flights)
- Thu77%(62 flights)
- Fri78%(60 flights)
- Sat76%(62 flights)
- Sun84%(62 flights)
- 6–9 AM90%(67 flights)
- 9 AM–12 PM80%(238 flights)
- 3–6 PM—(4 flights)
- 6–9 PM76%(113 flights)
- 9 PM–12 AM—(4 flights)
Jun 76% → May 91% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 82 |
| July 2025 | 66% | 92 |
| August 2025 | 87% | 92 |
| September 2025 | 85% | 88 |
| October 2025 | 88% | 60 |
| May 2026 | 91% | 11 |
Keep nerding
Based on 430 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.