Route · ORD → ASE · 2020–2025 BTS data
Chicago to Aspen
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ORD to ASE (Chicago to Aspen) ranks #2416 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 70.7%
- On-time
- -8.3 pts
- vs US avg
- 95 min
- Delay when late
- 5,190
- Flights
- #2416 of 4927
- Corpus placement
Cancelled
2.4%
Best Month
Oct 2024 82%
Worst Month
Dec 2025 48%
Distance
1,013 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 114 | 59 | 0 | 6 | OO |
| Oct 2025 | 55 | 17 | 0 | 3 | OO |
| Sep 2025 | 90 | 16 | 0 | 0 | OO |
| Aug 2025 | 75 | 17 | 1 | 7 | OO |
| Jul 2025 | 62 | 19 | 2 | 10 | OO |
| Jun 2025 | 56 | 22 | 0 | 9 | OO |
| Apr 2025 | 52 | 10 | 2 | 5 | OO |
| Mar 2025 | 176 | 66 | 5 | 15 | OO |
| Feb 2025 | 132 | 65 | 8 | 8 | OO |
| Jan 2025 | 143 | 63 | 1 | 3 | OO |
| Dec 2024 | 91 | 44 | 3 | 7 | OO |
| Oct 2024 | 57 | 10 | 0 | 1 | OO |
| Sep 2024 | 86 | 16 | 0 | 1 | OO |
| Aug 2024 | 71 | 24 | 0 | 7 | OO |
| Jul 2024 | 62 | 15 | 1 | 2 | OO |
| Jun 2024 | 83 | 30 | 4 | 3 | OO |
| Apr 2024 | 58 | 13 | 3 | 3 | OO |
| Mar 2024 | 177 | 44 | 11 | 7 | OO |
| Feb 2024 | 141 | 41 | 2 | 9 | OO |
| Jan 2024 | 150 | 46 | 8 | 13 | OO |
| Dec 2023 | 82 | 22 | 1 | 2 | OO |
| Oct 2023 | 32 | 3 | 1 | 2 | OO |
| Sep 2023 | 60 | 21 | 0 | 3 | OO |
| Aug 2023 | 62 | 23 | 0 | 3 | OO |
ORD–ASE seasonal on-time pattern
Best: September (81.5%) · weakest: December (59.6%)
Strongest calendar month
September
81.5% on-time · ~67 flights/mo
Busiest calendar month
March
~163 flights/mo avg
Weakest calendar month
December
59.6% on-time · ~104 flights/mo
Cancellation Rate
2.4%
53 of 2,167 flights
Diversion Rate
6.0%
129 of 2,167 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ORD - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
ORD on-time profileASE - Aspen
Full on-time, delay-cause, and seasonal performance for Aspen, CO.
ASE on-time profileCompare the two airports
See ORD and ASE side by side on delays, cancellations, and reliability.
Compare ORD vs ASEOrigin-hub reliability standing
Softer reliability from ORD
Among 168 routes leaving ORD, only 11 (including this one) clear below 75% on-time, while 10 stay ≥85% and 147 sit mid-band. Travelers comparing ORD options should weigh this 70.7% print against those peers · fleet on-time rank #4824 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to ORD–ASE.
Routes with a similar on-time rate
What the Data Says About ORD to ASE
On-time performance on the ORD to ASE pairing (Chicago to Aspen) trails a chunk of the network: 70.7% of 5,190 tracked flights arrived on schedule, with a 94.9-minute average delay on the ones that ran late. The route spans about 1,013 miles across 1 carrier. Cancellations over the trailing 24 months hit 2.4% (53 of 2,167 flights), with 6.0% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 82% on-time, while Dec 2025 came in at just 48% - a 34-point swing worth factoring into travel timing.
On the multi-year calendar, ORD–ASE peaks in September at 81.5% on-time while March carries the heaviest traffic (~163 flights per month) ; the softest month is December at 59.6%, a 21.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does ORD to ASE rank among US routes by traffic? ▼
How often are flights delayed from ORD to ASE? ▼
What is the cancellation rate for ORD to ASE? ▼
How far is the flight from ORD to ASE? ▼
When is the best time to fly from ORD to ASE? ▼
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 ORD–ASE data
ORD–ASE sits 8.3 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare ORD and ASE airport profiles: delay causes and top routes differ even on the same corridor. ORD airport
- If your dates flex, September (81.5% on-time) beats December (59.6%) on this corridor. Seasonal chart
- 4 other routes post a similar 70.7% 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.