PlainFlights

Route · MIA → PDX · 2020–2025 BTS data

Miami to Portland

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MIA to PDX (Miami to Portland) ranks #4625 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

64.4%
On-time
-14.6 pts
vs US avg
74 min
Delay when late
841
Flights
#4625 of 4927
Corpus placement

Cancelled

2.0%

Best Month

Apr 2025 78%

Worst Month

Dec 2024 47%

Distance

2,700 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 62 16 0 2 AS,AA
Nov 2025 37 12 0 0 AA,AS
Apr 2025 51 11 0 0 AA,AS
Mar 2025 62 23 0 0 AA,AS
Feb 2025 56 16 2 1 AA,AS
Jan 2025 62 18 0 0 AA,AS
Dec 2024 58 31 0 0 AA,AS
Nov 2024 33 8 0 1 AS,AA
Jul 2024 31 9 1 0 AA
Jun 2024 30 12 0 0 AA
May 2024 31 14 0 0 AA
Apr 2024 45 18 0 0 AA,AS
Mar 2024 62 31 2 0 AA,AS
Feb 2024 58 26 0 0 AA,AS
Jan 2024 62 21 11 2 AA,AS
Dec 2023 62 19 1 0 AA,AS
Nov 2023 39 14 0 0 AA,AS

MIA–PDX seasonal on-time pattern

Best: July (71.0%) · weakest: May (54.8%)

50%55%60%65%70%75% JanFebMarAprMayJunJulNovDec 63.7%

Strongest calendar month

July

71.0% on-time · ~31 flights/mo

Busiest calendar month

January

~62 flights/mo avg

Weakest calendar month

May

54.8% on-time · ~31 flights/mo

Cancellation Rate

2.0%

17 of 841 flights

Diversion Rate

0.7%

6 of 841 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

MIA - Miami

Full on-time, delay-cause, and seasonal performance for Miami, FL.

MIA on-time profile

PDX - Portland

Full on-time, delay-cause, and seasonal performance for Portland, OR.

PDX on-time profile

Compare the two airports

See MIA and PDX side by side on delays, cancellations, and reliability.

Compare MIA vs PDX

Origin-hub reliability standing

Softer reliability from MIA

Among 63 routes leaving MIA, only 25 (including this one) clear below 75% on-time, while 1 stay ≥85% and 37 sit mid-band. Travelers comparing MIA options should weigh this 64.4% print against those peers · fleet on-time rank #4899 of 4927.

What the Data Says About MIA to PDX

Miami to Portland (MIA to PDX) sits among the less reliable pairings in the BTS dataset, on-time only 64.4% of the time across 841 flights, with a 73.8-minute average delay when service runs late. Carriers on this 2,700-mile route (3 total) show a 2.0% cancellation rate and 0.7% diversion rate over the last 24 months (17 of 841 flights cancelled).

The monthly split is wide on this route: Apr 2025 posted the strongest performance at 78% on-time, while Dec 2024 came in at just 47% - a 32-point swing worth factoring into travel timing.

On the multi-year calendar, MIA–PDX peaks in July at 71.0% on-time while January carries the heaviest traffic (~62 flights per month) ; the softest month is May at 54.8%, a 16.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does MIA to PDX rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, MIA to PDX ranks #4625 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from MIA to PDX? ▼
Flights from Miami to Portland have a 64.4% on-time rate based on 841 flights. The average delay is 73.8 minutes. The best recent month was Apr 2025 with 78% on-time.
What is the cancellation rate for MIA to PDX? ▼
Over the last 24 months, 2.0% of flights on this route were cancelled (17 of 841 flights) and 0.7% were diverted.
How far is the flight from MIA to PDX? ▼
The flight distance from Miami (MIA) to Portland (PDX) is approximately 2,700 miles. This route is served by 3 carriers.
When is the best time to fly from MIA to PDX? ▼
The best recent month for on-time performance was Apr 2025 (78% on-time). The worst was Dec 2024 (47% on-time). Consider booking during months with historically better performance.

Airports on this route

MIA Airport

Miami
PDX Airport

Portland
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using MIA–PDX data

MIA–PDX sits 14.6 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.

  • Compare MIA and PDX airport profiles: delay causes and top routes differ even on the same corridor. MIA airport
  • If your dates flex, July (71.0% on-time) beats May (54.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 64.4% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.