Route · PDX → MDW · 2020–2025 BTS data
Portland to Chicago
The PDX–MDW corridor (Portland, OR → Chicago, IL) runs ahead of the national average, served by 1 carrier across roughly 1,751 miles.
Data updated 2026-06-13
- 88.5%
- On-time
- +9.5 pts
- vs US avg
- 51 min
- Delay when late
- 2,831
- Flights
Cancelled
0.2%
Best Month
Oct 2024 93%
Worst Month
Jun 2024 78%
Distance
1,751 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 5 | 0 | 0 | WN |
| Nov 2025 | 31 | 1 | 0 | 1 | WN |
| Oct 2025 | 54 | 9 | 0 | 0 | WN |
| Sep 2025 | 82 | 7 | 0 | 0 | WN |
| Aug 2025 | 84 | 7 | 0 | 0 | WN |
| Jul 2025 | 88 | 18 | 1 | 2 | WN |
| Jun 2025 | 78 | 16 | 0 | 0 | WN |
| May 2025 | 31 | 2 | 0 | 0 | WN |
| Apr 2025 | 30 | 3 | 0 | 0 | WN |
| Mar 2025 | 31 | 4 | 0 | 0 | WN |
| Jan 2025 | 31 | 1 | 0 | 0 | WN |
| Dec 2024 | 31 | 3 | 0 | 0 | WN |
| Nov 2024 | 31 | 1 | 0 | 0 | WN |
| Oct 2024 | 55 | 4 | 0 | 0 | WN |
| Sep 2024 | 81 | 13 | 0 | 0 | WN |
| Aug 2024 | 85 | 8 | 0 | 1 | WN |
| Jul 2024 | 88 | 12 | 0 | 0 | WN |
| Jun 2024 | 80 | 18 | 0 | 0 | WN |
| May 2024 | 31 | 1 | 0 | 1 | WN |
| Apr 2024 | 30 | 0 | 0 | 0 | WN |
| Mar 2024 | 31 | 1 | 0 | 0 | WN |
| Jan 2024 | 31 | 7 | 1 | 0 | WN |
| Dec 2023 | 31 | 6 | 0 | 0 | WN |
| Nov 2023 | 33 | 3 | 0 | 0 | WN |
Cancellation Rate
0.2%
2 of 1,209 flights
Diversion Rate
0.4%
5 of 1,209 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PDX - Portland
Full on-time, delay-cause, and seasonal performance for Portland, OR.
Origin airport →MDW - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Destination airport →Compare the two airports
See PDX and MDW side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to PDX–MDW.
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What the Data Says About PDX to MDW
Portland to Chicago (PDX to MDW) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 88.5% on-time rate across 2,831 flights, with delays that do happen averaging 50.7 minutes. The corridor runs roughly 1,751 miles and is served by 1 carrier. Over the most recent 24 months, 2 of 1,209 flights were cancelled (0.2%) and 5 diverted (0.4%).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 93% on-time, while Jun 2024 came in at just 78% - a 15-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from PDX to MDW? ▼
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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.