PDX to MIA flight delays
Portland, OR (PDX) Miami, FL (MIA) · 2,700 miles
725 flights · July 2024 – July 2026 · US Bureau of Transportation Statistics
82.87%
Arrived on time
Within 15 minutes of schedule
0.69%
Cancelled
Share of scheduled flights
63 min
When late, late by
Average across delayed arrivals
12 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In November it ran 25.9 points more punctual than in May — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The two directions do not behave alike. MIA to PDX arrives on time 13.1 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
The 2 airlines here are separated by under 3 points — close enough to call a tie. Choose on price and departure time.
Flights from Portland to Miami keep to schedule more reliably than most. On a route this punctual the day you fly matters more than the airline you pick.
Which airline should you fly on this route?
Over July 2024 – July 2026, American Airlines arrived on time most often on PDX to MIA. Alaska Airlines was late most often. Flights ran closest to schedule in January and worst in August.
Every airline on PDX to MIA
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| American Airlines | 433 | 83.92% | 0.69% | 57 min | B |
| Alaska Airlines | 292 | 81.31% | 0.68% | 70 min | B |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
MIA to PDX Miami back to Portland 69.76% on time DOther routes from Portland
Common questions
Are flights from Portland to Miami usually delayed?
82.87% of flights on the PDX to MIA route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airline is most on time from Portland to Miami?
American Airlines, at 83.92% on time across 433 flights. The least punctual on the route was Alaska Airlines at 81.31%.
How often are PDX to MIA flights cancelled?
0.69% of scheduled flights did not operate — about 7 in every thousand. That is in the normal range.
What is the best month to fly Portland to Miami?
November, when 90.9% of flights arrived on time. The worst was May at 65%.
When PDX to MIA flights are late, how late are they?
About 63 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on PDX to MIA during July 2024 – July 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →