PlainFlights

Route · MDW → PDX · 2020–2025 BTS data

Chicago to Portland

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MDW to PDX (Chicago to Portland) ranks #3396 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

72.9%
On-time
-6.1 pts
vs US avg
56 min
Delay when late
2,785
Flights
#3396 of 4927
Corpus placement

Cancelled

0.2%

Best Month

Oct 2024 87%

Worst Month

Jun 2024 56%

Distance

1,751 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 31 22 0 0 WN
Nov 2025 30 9 1 0 WN
Oct 2025 54 12 0 0 WN
Sep 2025 82 14 0 1 WN
Aug 2025 84 30 0 0 WN
Jul 2025 88 34 0 0 WN
Jun 2025 78 30 0 0 WN
May 2025 31 6 0 0 WN
Apr 2025 30 8 0 0 WN
Mar 2025 31 7 0 0 WN
Jan 2025 31 5 0 0 WN
Dec 2024 31 6 0 0 WN
Nov 2024 31 6 0 0 WN
Oct 2024 55 7 0 0 WN
Sep 2024 81 17 0 0 WN
Aug 2024 85 34 0 1 WN
Jul 2024 88 27 0 1 WN
Jun 2024 80 35 0 0 WN
May 2024 31 17 0 2 WN
Apr 2024 30 7 0 1 WN
Mar 2024 31 9 0 0 WN
Jan 2024 31 7 2 0 WN
Dec 2023 31 3 0 0 WN
Nov 2023 32 7 0 0 WN

MDW–PDX seasonal on-time pattern

Best: March (85.1%) · weakest: July (58.6%)

50%60%70%80%90% JanMarAprMayJunJulAugSepOctNovDec 71.3%

Strongest calendar month

March

85.1% on-time · ~34 flights/mo

Busiest calendar month

August

~67 flights/mo avg

Weakest calendar month

July

58.6% on-time · ~65 flights/mo

Cancellation Rate

0.2%

3 of 1,207 flights

Diversion Rate

0.5%

6 of 1,207 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

MDW - Chicago

Full on-time, delay-cause, and seasonal performance for Chicago, IL.

MDW on-time profile

PDX - Portland

Full on-time, delay-cause, and seasonal performance for Portland, OR.

PDX on-time profile

Compare the two airports

See MDW and PDX side by side on delays, cancellations, and reliability.

Compare MDW vs PDX

Origin-hub reliability standing

Softer reliability from MDW

Among 69 routes leaving MDW, only 18 (including this one) clear below 75% on-time, while 0 stay ≥85% and 51 sit mid-band. Travelers comparing MDW options should weigh this 72.9% print against those peers · fleet on-time rank #4694 of 4927.

What the Data Says About MDW to PDX

On-time performance on the MDW to PDX pairing (Chicago to Portland) trails a chunk of the network: 72.9% of 2,785 tracked flights arrived on schedule, with a 56.2-minute average delay on the ones that ran late. The route spans about 1,751 miles across 1 carrier. Cancellations over the trailing 24 months hit 0.2% (3 of 1,207 flights), with 0.5% diverted.

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 87% on-time, while Jun 2024 came in at just 56% - a 31-point swing worth factoring into travel timing.

On the multi-year calendar, MDW–PDX peaks in March at 85.1% on-time while August carries the heaviest traffic (~67 flights per month) ; the softest month is July at 58.6%, a 26.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does MDW to PDX rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, MDW to PDX ranks #3396 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from MDW to PDX? ▼
Flights from Chicago to Portland have a 72.9% on-time rate based on 2,785 flights. The average delay is 56.2 minutes. The best recent month was Oct 2024 with 87% on-time.
What is the cancellation rate for MDW to PDX? ▼
Over the last 24 months, 0.2% of flights on this route were cancelled (3 of 1,207 flights) and 0.5% were diverted.
How far is the flight from MDW to PDX? ▼
The flight distance from Chicago (MDW) to Portland (PDX) is approximately 1,751 miles. This route is served by 1 carrier.
When is the best time to fly from MDW to PDX? ▼
The best recent month for on-time performance was Oct 2024 (87% on-time). The worst was Jun 2024 (56% on-time). Consider booking during months with historically better performance.

Airports on this route

MDW Airport

Chicago
PDX Airport

Portland
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 MDW–PDX data

MDW–PDX sits 6.1 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.

  • Compare MDW and PDX airport profiles: delay causes and top routes differ even on the same corridor. MDW airport
  • If your dates flex, March (85.1% on-time) beats July (58.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 72.9% 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.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.