Portland (PDX) to Miami (MIA): On-Time Performance
Data through May 2026
Portland (PDX) to Miami (MIA) is a thinner route than most in this dataset — 344 departures over the past year, roughly 7 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 82% arrived on time.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 0.94
- last 12 months
- Duration
- 5h 41m
- scheduled
- Distance
- 2,700 mi
Best airline from PDX to MIA
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 83% | 11 min | 0.6% | 463 |
| Alaska Airlines | 81% | 14 min | 0.7% | 292 |
Monthly on-time trend
Best time to fly from PDX to MIA
Aim for departures around 10 p.m. (86% on-time); avoid 9 p.m. departures (67%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 88% | 9 min |
| Tuesday | 86% | 6 min |
| Wednesday | 84% | 11 min |
| Thursday | 87% | 5 min |
| Friday | 74% | 16 min |
| Saturday | 77% | 23 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 aircraft38%
- Airline operations33%
- National airspace system21%
- Weather8%
Frequently asked questions
- How often are flights from PDX to MIA delayed?
- 18% of PDX–MIA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 12 minutes.
- Which airline is most reliable from PDX to MIA?
- American Airlines has the best on-time record on this route at 83%, based on 463 flights. 2 airlines flew PDX–MIA frequently enough to compare in this period.
- What is the best time of day to fly from PDX to MIA?
- Departures around 10 p.m. have the best record (86% on-time), while departures around 9 p.m. have the worst (67%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PDX to MIA?
- The scheduled PDX–MIA flight time averages 5h 41m over 2,700 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are PDX to MIA flights cancelled?
- 0.7% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from PDX to MIA?
- May 2026 was the roughest month in this dataset, with only 65% of arrivals on time. The best was November 2024 at 91%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 755 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.