ALO to ORD flight delays
Waterloo, IA (ALO) Chicago, IL (ORD) · 234 miles
663 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
71.88%
Arrived on time
Within 15 minutes of schedule
3.17%
Cancelled
Share of scheduled flights
105 min
When late, late by
Average across delayed arrivals
30 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Cancellation, not delay, is the risk worth pricing here: 3.17% of scheduled flights never operated. A late flight still gets you there. A cancelled one leaves you rebooking, and on a route with few daily departures that can mean losing a day.
The season swings this route hard. In May it ran 27.6 points more punctual than in December — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
This route does worse than its own airport. ALO as a whole runs 7.7 points more punctual than these flights, which points at something specific to the route — the time of day it is scheduled, or the aircraft that feed it — rather than the airport.
Only Envoy Air flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Which airline should you fly on this route?
Over January 2025 – August 2026, Envoy Air arrived on time most often on ALO to ORD. Flights ran closest to schedule in May and worst in December.
Every airline on ALO to ORD
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Envoy Air | 617 | 72.33% | 2.43% | 101 min | D |
| SkyWest Airlines | 46 | 65% | 13.04% | 149 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
ORD to ALO Chicago back to Waterloo 73.23% on time DCommon questions
Are flights from Waterloo to Chicago usually delayed?
71.88% of flights on the ALO to ORD route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Waterloo to Chicago?
Only Envoy Air appears in the published record on this route, with 617 flights and 72.33% arriving on time.
How often are ALO to ORD flights cancelled?
3.17% of scheduled flights did not operate — about 32 in every thousand. That is high enough that cancellation, not delay, is the risk worth planning around.
What is the best month to fly Waterloo to Chicago?
May, when 86.4% of flights arrived on time. The worst was December at 58.8%.
When ALO to ORD flights are late, how late are they?
About 105 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on ALO to ORD during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →