Route
ORD → BIL
Chicago O'Hare International Airport Billings Logan International Airport
1,060 miles
Return route BIL → ORD →
How punctual is this route?
- On-time arrivals
- 87.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 72 min
- Flights arriving 15+ minutes late
- Flights tracked
- 257
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 46%
- Late-arriving aircraft 32%
- Air traffic control & airport 16%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 85.2% | 90 |
| October 2025 | 88.3% | 60 |
| November 2025 | 100.0% | 1 |
| May 2026 | 90.9% | 11 |
| June 2026 | 100.0% | 30 |
| July 2026 | 93.5% | 31 |
| August 2026 | 76.5% | 34 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Envoy Air | 199 | 87.9% | 0.0% | 75 min |
| SkyWest Airlines | 58 | 87.7% | 0.0% | 60 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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