Chicago (MDW) to Portland (PWM): On-Time Performance
Data through July 2026
Chicago (MDW) to Portland (PWM) is a thinner route than most in this dataset — 151 departures over the past year, roughly 3 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 80% arrived on time.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 0.41
- last 12 months
- Duration
- 2h 14m
- scheduled
- Distance
- 895 mi
Monthly on-time trend
Best time to fly from MDW to PWM
Aim for departures around 12 p.m. (92% on-time); avoid 6 p.m. departures (62%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 72% | 16 min |
| Tuesday | 83% | 20 min |
| Wednesdaybest | 85% | 7 min |
| Thursday | 83% | 9 min |
| Friday | 76% | 13 min |
| Saturday | 81% | 9 min |
| Sunday | 80% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft30%
- Airline operations47%
- National airspace system16%
- Weather7%
Frequently asked questions
- How often are flights from MDW to PWM delayed?
- 20% of MDW–PWM flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 13 minutes.
- What is the best time of day to fly from MDW to PWM?
- Departures around 12 p.m. have the best record (92% on-time), while departures around 6 p.m. have the worst (62%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MDW to PWM?
- The scheduled MDW–PWM flight time averages 2h 14m over 895 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are MDW to PWM flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What day of the week is most reliable for MDW to PWM?
- Wednesday flights have the best record at 85% on-time. Day-of-week differences on this route are meaningful — Monday trails at 72%.
Explore related pages
More routes from MDW
Other ways to fly to Portland (PWM)
Related guides
Based on 333 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.