Route · CID → DEN · 2020–2025 BTS data
Cedar Rapids/Iowa City to Denver
The CID–DEN corridor (Cedar Rapids/Iowa City, IA → Denver, CO) runs ahead of the national average, served by 9 carriers across roughly 692 miles.
Data updated 2026-06-13
- 81.8%
- On-time
- +2.8 pts
- vs US avg
- 91 min
- Delay when late
- 6,265
- Flights
Cancelled
1.4%
Best Month
Sep 2024 94%
Worst Month
Jul 2025 58%
Distance
692 mi
Carriers
9
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 75 | 25 | 2 | 0 | F9,UA,OO |
| Nov 2025 | 97 | 12 | 4 | 0 | OO,UA,F9 |
| Oct 2025 | 102 | 17 | 0 | 0 | OO,UA,F9 |
| Sep 2025 | 98 | 16 | 1 | 1 | UA,OO,F9 |
| Aug 2025 | 102 | 32 | 2 | 0 | OO,F9,UA |
| Jul 2025 | 106 | 45 | 2 | 2 | OO,UA,F9 |
| Jun 2025 | 101 | 41 | 0 | 1 | OO,UA,F9 |
| May 2025 | 98 | 34 | 1 | 0 | OO,UA,F9 |
| Apr 2025 | 71 | 21 | 0 | 2 | F9,UA |
| Mar 2025 | 74 | 11 | 1 | 0 | UA,F9 |
| Feb 2025 | 61 | 19 | 0 | 0 | UA,F9 |
| Jan 2025 | 66 | 16 | 1 | 0 | UA,F9 |
| Dec 2024 | 85 | 7 | 6 | 0 | F9,OO,UA |
| Nov 2024 | 107 | 17 | 3 | 0 | OO,UA,F9 |
| Oct 2024 | 124 | 9 | 1 | 0 | UA,OO,F9 |
| Sep 2024 | 120 | 7 | 0 | 0 | OO,UA,F9 |
| Aug 2024 | 114 | 22 | 1 | 0 | F9,OO,UA |
| Jul 2024 | 103 | 22 | 0 | 0 | F9,UA |
| Jun 2024 | 89 | 23 | 0 | 0 | F9,UA |
| May 2024 | 89 | 26 | 0 | 0 | F9,UA |
| Apr 2024 | 82 | 16 | 0 | 0 | F9,UA |
| Mar 2024 | 79 | 10 | 0 | 0 | F9,UA |
| Feb 2024 | 65 | 6 | 1 | 0 | F9,UA |
| Jan 2024 | 66 | 16 | 5 | 0 | F9,UA |
Cancellation Rate
1.4%
31 of 2,174 flights
Diversion Rate
0.3%
6 of 2,174 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
CID - Cedar Rapids/Iowa City
Full on-time, delay-cause, and seasonal performance for Cedar Rapids/Iowa City, IA.
Origin airport →DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Destination airport →Compare the two airports
See CID and DEN side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to CID–DEN.
Routes with a similar on-time rate
What the Data Says About CID to DEN
6,265 tracked flights put the CID to DEN pairing (Cedar Rapids/Iowa City to Denver) at a 81.8% on-time rate, squarely in line with the wider network. Delays that do occur run 91.3 minutes on average. Across the 692-mile route and its 9 carriers, the trailing 24 months show 1.4% cancelled and 0.3% diverted (2,174 flights sampled).
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 94% on-time, while Jul 2025 came in at just 58% - a 37-point swing worth factoring into travel timing.
Frequently Asked Questions
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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.
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.