Route · MSO → ORD · 2020–2025 BTS data
Missoula to Chicago
The MSO–ORD corridor (Missoula, MT → Chicago, IL) runs behind the national average, served by 7 carriers across roughly 1,332 miles.
Data updated 2026-06-13
- 75.8%
- On-time
- -3.2 pts
- vs US avg
- 79 min
- Delay when late
- 1,132
- Flights
Cancelled
0.4%
Best Month
Sep 2021 89%
Worst Month
Jul 2025 63%
Distance
1,332 mi
Carriers
7
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2025 | 35 | 8 | 0 | 0 | OO,MQ |
| Sep 2025 | 73 | 16 | 1 | 1 | MQ,UA,OO |
| Aug 2025 | 89 | 27 | 0 | 4 | MQ,UA |
| Jul 2025 | 92 | 34 | 1 | 3 | UA,MQ |
| Jun 2025 | 81 | 15 | 0 | 0 | UA,MQ |
| Sep 2024 | 55 | 11 | 0 | 0 | OO,MQ |
| Aug 2024 | 62 | 15 | 0 | 1 | MQ,OO,UA |
| Jul 2024 | 62 | 20 | 0 | 1 | MQ,UA |
| Jun 2024 | 56 | 14 | 0 | 1 | MQ,UA |
| Aug 2023 | 62 | 15 | 0 | 0 | MQ,UA |
| Jul 2023 | 62 | 17 | 0 | 1 | MQ,UA |
| Jun 2023 | 59 | 10 | 1 | 0 | MQ,UA |
| Aug 2022 | 31 | 5 | 1 | 0 | OO |
| Jul 2022 | 31 | 4 | 0 | 0 | OO |
| Sep 2021 | 57 | 6 | 0 | 0 | UA,MQ,YX |
| Aug 2021 | 62 | 14 | 0 | 1 | UA,MQ |
| Jul 2021 | 61 | 20 | 0 | 0 | UA,MQ |
| Jun 2021 | 56 | 18 | 0 | 1 | UA,MQ,YX |
| Aug 2020 | 46 | 5 | 0 | 0 | MQ,OO,UA |
Cancellation Rate
0.4%
4 of 1,132 flights
Diversion Rate
1.2%
14 of 1,132 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MSO - Missoula
Full on-time, delay-cause, and seasonal performance for Missoula, MT.
Origin airport →ORD - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Destination airport →Compare the two airports
See MSO and ORD side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to MSO–ORD.
Routes with a similar on-time rate
What the Data Says About MSO to ORD
The Missoula to Chicago corridor (MSO to ORD) posts a 75.8% on-time rate on the lower edge of the average band, based on 1,132 tracked flights. Late flights run 79.3 minutes behind on average. 7 carriers cover the 1,332-mile route; over the last 24 months, 4 of 1,132 flights were cancelled (0.4%) and 1.2% diverted.
The monthly split is wide on this route: Sep 2021 posted the strongest performance at 89% on-time, while Jul 2025 came in at just 63% - a 26-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from MSO to ORD? ▼
What is the cancellation rate for MSO to ORD? ▼
How far is the flight from MSO to ORD? ▼
When is the best time to fly from MSO to ORD? ▼
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.