Route
ORD → ALO
Chicago O'Hare International Airport Waterloo Regional Airport
234 miles
Return route ALO → ORD →
How punctual is this route?
- On-time arrivals
- 71.8%
- Less than 15 minutes late
- Cancelled
- 4.6%
- Of scheduled flights
- Average delay when late
- 92 min
- Flights arriving 15+ minutes late
- Flights tracked
- 654
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 50%
- Extreme weather 20%
- Air traffic control & airport 16%
- Airline (crew, maintenance, cleaning) 14%
- 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 | 80.8% | 52 |
| October 2025 | 85.2% | 61 |
| November 2025 | 80.0% | 54 |
| December 2025 | 58.8% | 56 |
| January 2026 | 61.1% | 54 |
| February 2026 | 85.1% | 48 |
| March 2026 | 65.3% | 53 |
| April 2026 | 58.9% | 59 |
| May 2026 | 82.8% | 59 |
| June 2026 | 68.9% | 51 |
| July 2026 | 68.8% | 54 |
| August 2026 | 64.0% | 53 |
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 | 500 | 73.4% | 3.0% | 78 min |
| SkyWest Airlines | 154 | 66.2% | 9.7% | 129 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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