Route · ALO → ORD · 2020–2025 BTS data
Waterloo to Chicago
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ALO to ORD (Waterloo to Chicago) ranks #3833 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 84.2%
- On-time
- +5.2 pts
- vs US avg
- 79 min
- Delay when late
- 1,987
- Flights
- #3833 of 4927
- Corpus placement
Cancelled
3.1%
Best Month
Oct 2022 98%
Worst Month
Jul 2025 61%
Distance
234 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 56 | 21 | 5 | 0 | MQ |
| Nov 2025 | 54 | 11 | 3 | 0 | MQ |
| Oct 2025 | 61 | 18 | 0 | 0 | MQ |
| Sep 2025 | 52 | 10 | 0 | 0 | MQ |
| Aug 2025 | 55 | 16 | 0 | 1 | MQ |
| Jul 2025 | 61 | 24 | 1 | 0 | MQ |
| Jun 2025 | 51 | 13 | 0 | 0 | MQ |
| Feb 2023 | 35 | 4 | 1 | 0 | MQ |
| Jan 2023 | 40 | 9 | 3 | 0 | MQ |
| Dec 2022 | 61 | 16 | 3 | 0 | MQ |
| Nov 2022 | 58 | 8 | 1 | 0 | MQ |
| Oct 2022 | 60 | 1 | 1 | 0 | MQ |
| Sep 2022 | 51 | 10 | 0 | 0 | MQ |
| Aug 2022 | 57 | 12 | 5 | 0 | MQ |
| Jul 2022 | 58 | 14 | 1 | 0 | MQ |
| Jun 2022 | 56 | 12 | 0 | 0 | MQ |
| May 2022 | 61 | 12 | 0 | 0 | MQ |
| Apr 2022 | 60 | 10 | 2 | 0 | MQ |
| Mar 2022 | 62 | 2 | 1 | 0 | MQ |
| Feb 2022 | 55 | 5 | 5 | 0 | MQ |
| Jan 2022 | 58 | 4 | 5 | 0 | MQ |
| Dec 2021 | 59 | 2 | 2 | 0 | MQ |
| Nov 2021 | 56 | 1 | 0 | 0 | MQ |
| Oct 2021 | 53 | 6 | 2 | 0 | MQ |
ALO–ORD seasonal on-time pattern
Best: March (95.5%) · weakest: December (77.8%)
Strongest calendar month
March
95.5% on-time · ~52 flights/mo
Busiest calendar month
July
~59 flights/mo avg
Weakest calendar month
December
77.8% on-time · ~59 flights/mo
Cancellation Rate
3.1%
41 of 1,330 flights
Diversion Rate
0.1%
1 of 1,330 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ALO - Waterloo
Full on-time, delay-cause, and seasonal performance for Waterloo, IA.
ALO on-time profileORD - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
ORD on-time profileCompare the two airports
See ALO and ORD side by side on delays, cancellations, and reliability.
Compare ALO vs ORDSimilar routes
Other BTS-tracked routes with comparable performance or trip length to ALO–ORD.
Routes with a similar on-time rate
What the Data Says About ALO to ORD
Bureau of Transportation Statistics records show Waterloo to Chicago (ALO to ORD) running a 84.2% on-time rate over 1,987 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 79.4 minutes. The 234-mile corridor is served by 1 carrier, and over the last 24 months 3.1% of 1,330 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Oct 2022 posted the strongest performance at 98% on-time, while Jul 2025 came in at just 61% - a 38-point swing worth factoring into travel timing.
On the multi-year calendar, ALO–ORD peaks in March at 95.5% on-time while July carries the heaviest traffic (~59 flights per month) ; the softest month is December at 77.8%, a 17.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does ALO to ORD rank among US routes by traffic? ▼
How often are flights delayed from ALO to ORD? ▼
What is the cancellation rate for ALO to ORD? ▼
How far is the flight from ALO to ORD? ▼
When is the best time to fly from ALO to ORD? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using ALO–ORD data
ALO–ORD runs 5.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare ALO and ORD airport profiles: delay causes and top routes differ even on the same corridor. ALO airport
- If your dates flex, March (95.5% on-time) beats December (77.8%) on this corridor. Seasonal chart
- 4 other routes post a similar 84.2% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.