Route on-time record
PDX to MIA: most on-time flights and the best time to fly
Portland (Portland International Airport) to Miami (Miami International Airport). 344 nonstop flights in Jun 2025 to May 2026, 84% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was American 2889 at 10:28 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
PDX → MIA
Portland to Miami: 344 nonstop flights a year
On time (12 months)
84%
Cancelled
0.9%
avg delay 11 min
Best time to leave
No clear winner
Most reliable airline
American
83% chance on time
Lowest nonstop fare seen in the next two months: $191 (Alaska 37 on 2026-11-25). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · American 2889
10:28 PM → 7:07 AM5h 39m nonstop
Local times, typical schedule. Last flown 2026-05-20.
83%
chance on time
- On time (history)
- 84%
- Cancelled
- 1.0%
- Avg arrival delay
- 10 min
- Arrived on time 84% of the time (199 flights, Jun 2025 to May 2026).
Moderate track record · 199 flights
Find American 2889 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- American Airlines83%
202 flights · 84% on time as flown · 0.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM83%
141 flights · avg delay 13 min
- After 9 PM84%
202 flights · avg delay 10 min
Best day: Monday (86%). Worst: Saturday (74%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)35%
- Late-arriving aircraft31%
- Severe weather17%
- Air traffic control and airport volume16%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
PDX to MIA questions
- Which airline is most on time from PDX to MIA?
- American, with a season-adjusted 83% chance of operating and arriving on time over 202 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on PDX to MIA?
- May (64% on time); the best was February (90%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from PDX
- MIA to PDX (return)
- PDX to SEA 84%
- PDX to LAX 87%
- PDX to DEN 80%
- PDX to PHX 80%
- PDX to SFO 75%
- PDX to LAS 81%
- PDX to ORD 77%
- PDX to DFW 80%
- PDX to SLC 88%
- PDX to SMF 83%
- PDX to SAN 80%
- PDX to SJC 82%
Most on-time flights from PDX on every route →
Live status: FAA delays and ground stops