Miami (MIA) to Portland (PDX): On-Time Performance
Data through July 2026
Miami (MIA) to Portland (PDX) is a thinner route than most in this dataset — 341 departures over the past year, roughly 7 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 69% arrived on time, noticeably below the national average of 78%.
- On-time
- 69%
- arrived <15 min late
- Avg delay
- 24 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 0.93
- last 12 months
- Duration
- 6h 45m
- scheduled
- Distance
- 2,700 mi
Best airline from MIA to PDX
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlinesmost reliable | 74% | 20 min | 1.4% | 291 |
| American Airlines | 66% | 27 min | 0.9% | 433 |
Monthly on-time trend
Best time to fly from MIA to PDX
Aim for departures around 4 p.m. (81% on-time); avoid 7 p.m. departures (66%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 69% | 28 min |
| Tuesdaybest | 81% | 10 min |
| Wednesday | 71% | 31 min |
| Thursday | 76% | 18 min |
| Friday | 66% | 21 min |
| Saturday | 60% | 27 min |
| Sunday | 64% | 33 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft51%
- Airline operations27%
- National airspace system20%
- Weather2%
Frequently asked questions
- How often are flights from MIA to PDX delayed?
- 31% of MIA–PDX 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 24 minutes.
- Which airline is most reliable from MIA to PDX?
- Alaska Airlines has the best on-time record on this route at 74%, based on 291 flights. 2 airlines flew MIA–PDX frequently enough to compare in this period.
- What is the best time of day to fly from MIA to PDX?
- Departures around 4 p.m. have the best record (81% on-time), while departures around 7 p.m. have the worst (66%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to PDX?
- The scheduled MIA–PDX flight time averages 6h 45m over 2,700 miles. Actual arrival times vary — flights on this route land 15+ minutes late 31% of the time.
- How often are MIA to PDX flights cancelled?
- 1.1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from MIA to PDX?
- December 2024 was the roughest month in this dataset, with only 47% of arrivals on time. The best was April 2026 at 88%. If your dates are flexible, that 42-point gap is worth planning around.
Explore related pages
More routes from MIA
Other ways to fly to Portland (PDX)
Related guides
Based on 724 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.