Airport · PDX · Portland, Oregon

Portland, OR

Portland, OR posts above-median on-time performance among the 382 tracked U.S. airports, as a high-volume U.S. airport. According to the U.S. DOT Bureau of Transportation Statistics, drawn from 661,488 flights (2020–2025); its biggest delay driver is carrier.

Compiled by PlainFlights Editorial, Flight Performance Editorial Team

Data updated 2026-06-13

84.4%
On-time: Top 39%
on-time, US airports: 67 min
Delay when late: 0.83%
Cancelled

Key Performance Metrics

Total Flights

661,488

Best Month

Oct 94.4%

Worst Month

Jun 91%

Delayed

103,008

Cancelled

5,511

60-65%

1
65-70%

4
70-75%

9
75-80%

48
80-85%

192
85-90%

116
90-95%

12

What this shows PDX is marked in the 80-85% band.

Delay Cause Breakdown

Top delay cause: Carrier. Total delay minutes: 3,008,123.

Late Aircraft 36.9% (1,110,880 min)

Carrier 38.4% (1,153,915 min)

NAS (National Aviation System) 20.2% (607,243 min)

Weather 4.3% (129,084 min)

Security 0.2% (7,001 min)

Seasonal Performance Patterns

Monthly averages across all years of data. Best month: October (94.4% on-time). Most delays: June (91% on-time).

Month	Avg Flights	Avg Delayed	Avg Cancelled	On-Time %
December	9,139	1,789	112	91.2%
November	9,047	1,208	34	94.3%
October	9,637	1,238	28	94.4%
September	9,465	1,173	21	94.4%
August	10,068	1,692	43	92.4%
July	9,984	1,957	57	91.2%
June	9,331	1,901	42	91%
May	8,815	1,320	41	93.5%
April	8,539	1,219	170	93.6%
March	9,386	1,250	148	94.3%
February	8,042	1,126	98	93.8%
January	8,796	1,296	126	93.4%

Year-Over-Year Performance

Annual flight volume and on-time trends at PDX.

Year	Flights	Delayed	Cancelled	On-Time %
2025	122,315	9,658	438	92.1%
2024	119,179	9,531	755	92%
2023	117,358	8,399	565	92.8%
2022	118,756	8,567	1,187	92.8%
2021	111,732	7,111	787	93.6%
2020	72,148	2,379	1,779	96.7%

Cancellation & Diversion Analysis

Flight disruption statistics for Portland, OR.

Cancellation Rate

0.83%

5,511 of 661,488 flights

Diversion Rate

0.10%

666 of 661,488 flights

Delay Rate

15.6%

103,008 of 661,488 flights

Monthly Performance

Recent 24 months of flight data.

Period	Flights	Dep Delayed	Arr Delayed	Cancelled	Diverted
Dec 2025	10,242	1,087	1,297	31	13
Nov 2025	9,954	701	882	75	9
Oct 2025	10,982	807	1,033	35	9
Sep 2025	10,544	676	725	9	12
Aug 2025	11,372	927	1,079	38	19
Jul 2025	11,726	1,261	1,407	69	31
Jun 2025	11,284	1,158	1,415	36	14
May 2025	10,398	699	930	18	14
Apr 2025	9,527	624	739	13	13
Mar 2025	9,519	580	739	14	10
Feb 2025	7,964	587	754	61	0
Jan 2025	8,803	551	689	39	18
Dec 2024	10,128	887	1,050	14	13
Nov 2024	9,745	553	772	25	4
Oct 2024	10,516	548	666	17	5
Sep 2024	10,489	643	790	13	8
Aug 2024	11,087	915	1,176	38	16
Jul 2024	10,983	1,113	1,412	126	9
Jun 2024	10,539	1,148	1,446	34	10
May 2024	10,223	926	1,194	40	18
Apr 2024	9,533	720	857	16	8
Mar 2024	9,337	689	886	23	10
Feb 2024	8,036	533	612	15	9
Jan 2024	8,563	856	962	394	9

Top Routes from PDX

Busiest routes to and from Portland, OR.

Route	Flights	On-Time	Distance
PDX (Portland) → SEA (Seattle)	36,148	87.7%	129 mi
SEA (Seattle) → PDX (Portland)	35,578	83.7%	129 mi
LAX (Los Angeles) → PDX (Portland)	25,109	86.5%	834 mi
PDX (Portland) → LAX (Los Angeles)	24,956	87.7%	834 mi
PDX (Portland) → DEN (Denver)	23,123	84.1%	991 mi
DEN (Denver) → PDX (Portland)	23,121	77.1%	991 mi
PDX (Portland) → LAS (Las Vegas)	19,986	83%	763 mi
LAS (Las Vegas) → PDX (Portland)	19,893	80.4%	763 mi
PDX (Portland) → SFO (San Francisco)	19,485	81.6%	550 mi
SFO (San Francisco) → PDX (Portland)	19,421	84.4%	550 mi
PHX (Phoenix) → PDX (Portland)	18,754	82%	1,009 mi
PDX (Portland) → PHX (Phoenix)	18,732	83.7%	1,009 mi
PDX (Portland) → SLC (Salt Lake City)	14,015	89.8%	630 mi
SLC (Salt Lake City) → PDX (Portland)	14,011	88.2%	630 mi
PDX (Portland) → SJC (San Jose)	13,184	86.2%	569 mi
SJC (San Jose) → PDX (Portland)	13,062	86.4%	569 mi
DFW (Dallas/Fort Worth) → PDX (Portland)	12,219	72.5%	1,616 mi
PDX (Portland) → DFW (Dallas/Fort Worth)	12,212	80.8%	1,616 mi
PDX (Portland) → ORD (Chicago)	11,724	84.8%	1,739 mi
ORD (Chicago) → PDX (Portland)	11,721	80.3%	1,739 mi

Airports With a Similar On-Time Rate

Other U.S. airports nationwide whose on-time rate is closest to Portland, OR's 84.4%.

Spokane, WA

84.4% on-time 205,595 flights

Kalispell, MT

84.4% on-time 50,123 flights

Idaho Falls, ID

84.4% on-time 43,233 flights

Arcata/Eureka, CA

84.4% on-time 20,571 flights

Elmira/Corning, NY

84.5% on-time 13,181 flights

Lawton/Fort Sill, OK

84.5% on-time 12,720 flights

Other Airports in Oregon

Compare performance with other Oregon airports.

EUG 84.1%

Eugene, OR

Eugene · 90,806 flights

RDM 86%

Bend/Redmond, OR

Bend/Redmond · 75,747 flights

MFR 86.8%

Medford, OR

Medford · 67,186 flights

OTH 80.6%

North Bend/Coos Bay, OR

North Bend/Coos Bay · 4,337 flights

Keep exploring

More flight data around Portland, OR.

Oregon flight data

Statewide on-time and delay aggregates, plus every reporting airport in Oregon.

View OR data →

Airport rankings

See where PDX sits among U.S. airports on on-time rate and average delay.

Best on-time airports →

Compare airports

Put PDX head-to-head with another airport on delays and reliability.

Open comparison tool →

What the Data Says About PDX

Portland, OR in Portland, Oregon handled 661,488 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 84.4% on-time departure rate. Of those flights, 103,008 experienced delays, 5,511 were cancelled, and 666 were diverted. The cancellation rate works out to 0.83%, the diversion rate to 0.10%, and the average delay when departures run late is 66.7 minutes. These figures are the baseline for comparing PDX against other airports in the same state and nationally.

Breaking down what drives delays at PDX, Carrier leads the pack. Carrier accounts for 38.4% of total delay minutes, followed by Late Aircraft at 36.9% and NAS (National Aviation System) at 20.2%. Weather contributes 4.3% of delay minutes at this airport, while security holds the smallest share at 0.2%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.

Seasonally, October runs the cleanest at PDX with a 94.4% on-time rate, while June is the roughest at 91% - a 3-point swing between best and worst month. Volume peaks in August, when average flights hit 10,068. The busiest route connecting PDX is to SEA (Seattle), with 36,148 flights at a 87.7% on-time rate. Combine these numbers - 84.4% on-time, 66.7-minute average delay, 0.83% cancellation rate, and you have a concrete picture of departure reliability at Portland, OR.

Frequently Asked Questions

What is the on-time performance rate at Portland, OR (PDX)? ▼

Portland, OR has an overall on-time departure rate of 84.4%. Out of 661,488 total flights tracked, 103,008 experienced delays and 5,511 were cancelled.

What is the most common cause of delays at PDX? ▼

The top delay cause at Portland, OR is Carrier. Carrier accounts for 38.4% of all delay minutes.

What is the average delay time at PDX? ▼

The average delay at Portland, OR is 66.7 minutes. This includes delays from carrier issues, weather, National Aviation System constraints, security, and late-arriving aircraft.

What is the best month to fly from PDX? ▼

Based on historical data, October has the best on-time performance at PDX with 94.4% of flights departing on time.

What is the worst month for delays at PDX? ▼

June tends to have the most delays at PDX, with an on-time rate of only 91%.

How many routes operate from PDX? ▼

Portland, OR serves at least 20 routes. The busiest route is PDX to SEA (Portland - Seattle) with 36,148 flights.

What is the cancellation rate at PDX? ▼

Portland, OR has a cancellation rate of 0.83%, based on 5,511 cancelled flights out of 661,488 total flights tracked.

Flight Guides

Data-driven guides to help you understand airport and flight performance.

Best & Worst Airlines for On-Time Performance

Which carriers consistently outperform peers

Why Flights Get Cancelled

Cancellation causes broken down by data

How to Choose Reliable Flight Routes

Use delay data to pick flights that arrive on time

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Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025). Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.

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

Using PDX's data

An airport-level on-time rate is a starting point, not a guarantee for your specific flight.

Check the busiest route from PDX before you book a connection. See top routes
Travel in October rather than June if your dates are flexible. Seasonal patterns
Scores vary by airline and route within the same airport; check the specific carrier you're flying. Browse airlines

On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.

All airports → | Rankings →

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 Editorial

Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025 Accessed 2026-07-23

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.