Portland International in September 2024

87.5%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In September 2024, reporting carriers scheduled 5,244 domestic departures from Portland International (PDX). 87.5% left less than 15 minutes late and 86.0% reached their destination on time; 0.2% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so PDX departures were 3.1 points above the national departure figure.

A year earlier, in September 2023, the airport had 4,913 departures with 87.0% leaving on time: a change of +0.5 points, with flights up 7%.

Flights arriving at PDX that month were on time 84.6% of the time (5,245 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 41%, late-arriving aircraft 33% and national aviation system 23%.

On time 86.0%
Arrived 15+ minutes late 13.6%
Cancelled 0.2%
Diverted 0.2%

Every scheduled departure from PDX in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	PDX, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	87.5%	87.0%	82.7%	84.4%
Arrived on time	86.0%	85.3%	82.0%	83.9%
Cancelled	0.2%	0.4%	0.7%	0.6%
Average departure delay (late minutes only)	8.5 min	9.8 min	11.6 min	10.6 min
Scheduled departures a day	175	164	173	19,421
Scheduled departures	5,244	4,913	63,282	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	1,456	28%	85.3%	0.6 min	0.6%
WN Southwest Airlines	911	17%	86.7%	0.1 min	0.1%
OO SkyWest Airlines	889	17%	83.0%	5.3 min	0.0%
DL Delta Air Lines	627	12%	93.1%	-6.2 min	0.0%
UA United Airlines	613	12%	88.9%	-1.9 min	0.2%
AA American Airlines	288	5%	86.5%	-0.7 min	0.0%
NK Spirit Airlines	179	3%	79.9%	7.9 min	0.0%
F9 Frontier Airlines	164	3%	78.0%	16.3 min	0.6%
HA Hawaiian Airlines	60	1%	88.3%	-4.2 min	0.0%
B6 JetBlue Airways	30	1%	56.7%	59.5 min	3.3%
G4 Allegiant Air	27	1%	81.5%	16.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PDX–SEA	Portland to Seattle	472	86.9%	0.6 min	0.0%
PDX–DEN	Portland to Denver	413	88.4%	0.6 min	0.0%
PDX–LAX	Portland to Los Angeles	409	89.7%	-2.1 min	0.2%
PDX–SFO	Portland to San Francisco	318	81.4%	3.3 min	0.3%
PDX–PHX	Portland to Phoenix	316	89.2%	-1.6 min	0.6%
PDX–LAS	Portland to Las Vegas	305	81.0%	5.6 min	0.0%
PDX–SJC	Portland to San Jose	245	85.3%	0.6 min	0.4%
PDX–DFW	Portland to Dallas/Fort Worth	216	82.9%	3.5 min	0.0%
PDX–SLC	Portland to Salt Lake City	216	88.4%	1.7 min	0.5%
PDX–ORD	Portland to Chicago	198	85.4%	2.5 min	0.0%
PDX–SAN	Portland to San Diego	165	82.4%	3.8 min	0.0%
PDX–SMF	Portland to Sacramento	145	89.0%	-1.6 min	0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	41.2%	38.6%	17,216
Late-arriving aircraft	33.4%	38.4%	13,950
National Aviation System	23.4%	18.2%	9,757
Extreme weather	1.9%	4.8%	782
Security	0.2%	0.1%	64

41,769 delay minutes on 712 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left PDX on time in September 2024?

87.5% of 5,244 scheduled domestic departures left less than 15 minutes late, and 86.0% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 87.0% of 4,913 departures left on time and 0.4% were cancelled, against 87.5% and 0.2% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for PDX · methodology · corrections.