Historical on-time performance
Portland to Miami
2,700 miData through Dec 2025Source: US DOT · BTS
Flights on PDX–MIA arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 218 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- American AirlinesOn-time89%Medianon timep9020 minCancel0.0%Flights124
- Alaska AirlinesOn-time80%Medianon timep9030 minCancel0.0%Flights94
Why flights run late
Delay causes
- Airline31%
- Weather1%
- Air traffic (NAS)28%
- Late aircraft40%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly PDX → MIA
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 73% to 81% on time.
- Middays81% on time · p90 40 min · 69 flights · limited
- Overnights79% on time · p90 40 min · 583 flights
- Mornings73% on time · p90 50 min · 221 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 83% on time.
- Wednesdays83% on time · p90 20 min · 122 flights · limited
- Tuesdays81% on time · p90 30 min · 120 flights · limited
- Mondays81% on time · p90 35 min · 129 flights · limited
- Thursdays79% on time · p90 30 min · 121 flights · limited
- Sundays77% on time · p90 60 min · 128 flights · limited
- Fridays74% on time · p90 35 min · 126 flights · limited
- Saturdays70% on time · p90 75 min · 127 flights · limited
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