Route · ORD → MSO · 2020–2025 BTS data
Chicago to Missoula
The ORD–MSO corridor (Chicago, IL → Missoula, MT) runs ahead of the national average, served by 7 carriers across roughly 1,332 miles.
Data updated 2026-06-13
- 82.5%
- On-time
- +3.5 pts
- vs US avg
- 64 min
- Delay when late
- 1,131
- Flights
Cancelled
0.2%
Best Month
Jun 2023 93%
Worst Month
Jul 2023 65%
Distance
1,332 mi
Carriers
7
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2025 | 34 | 5 | 0 | 0 | OO,MQ |
| Sep 2025 | 73 | 9 | 1 | 0 | MQ,UA,OO |
| Aug 2025 | 89 | 23 | 0 | 0 | MQ,UA |
| Jul 2025 | 92 | 23 | 1 | 0 | UA,MQ |
| Jun 2025 | 82 | 12 | 0 | 0 | UA,MQ |
| Sep 2024 | 55 | 8 | 0 | 0 | OO,MQ |
| Aug 2024 | 62 | 13 | 0 | 0 | MQ,OO,UA |
| Jul 2024 | 62 | 9 | 0 | 1 | MQ,UA |
| Jun 2024 | 56 | 14 | 0 | 1 | MQ,UA |
| Aug 2023 | 62 | 15 | 0 | 0 | MQ,UA |
| Jul 2023 | 62 | 22 | 0 | 0 | MQ,UA |
| Jun 2023 | 59 | 4 | 0 | 0 | MQ,UA |
| Aug 2022 | 31 | 3 | 0 | 0 | OO |
| Jul 2022 | 31 | 7 | 0 | 0 | OO |
| Sep 2021 | 57 | 5 | 0 | 0 | UA,MQ,YX |
| Aug 2021 | 62 | 7 | 0 | 0 | UA,MQ |
| Jul 2021 | 61 | 7 | 0 | 0 | UA,MQ |
| Jun 2021 | 55 | 9 | 0 | 0 | UA,MQ,YX |
| Aug 2020 | 46 | 3 | 0 | 0 | MQ,OO,UA |
Cancellation Rate
0.2%
2 of 1,131 flights
Diversion Rate
0.2%
2 of 1,131 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.
Origin airport →MSO - Missoula
Full on-time, delay-cause, and seasonal performance for Missoula, MT.
Destination airport →Compare the two airports
See ORD and MSO side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to ORD–MSO.
Routes with a similar on-time rate
What the Data Says About ORD to MSO
Bureau of Transportation Statistics records show Chicago to Missoula (ORD to MSO) running a 82.5% on-time rate over 1,131 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 64.3 minutes. The 1,332-mile corridor is served by 7 carriers, and over the last 24 months 0.2% of 1,131 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Jun 2023 posted the strongest performance at 93% on-time, while Jul 2023 came in at just 65% - a 29-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from ORD to MSO? ▼
What is the cancellation rate for ORD to MSO? ▼
How far is the flight from ORD to MSO? ▼
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Flight Guides
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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.