Portland International in August 2024

82.8%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 August 2024, reporting carriers scheduled 5,542 domestic departures from Portland International (PDX). 82.8% left less than 15 minutes late and 81.4% reached their destination on time; 0.7% were cancelled.

Nationally that month, 75.4% of flights departed on time and 74.7% arrived on time, so PDX departures were 7.4 points above the national departure figure.

A year earlier, in August 2023, the airport had 5,273 departures with 83.4% leaving on time: a change of −0.6 points, with flights up 5%.

Flights arriving at PDX that month were on time 78.0% of the time (5,545 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 34% and national aviation system 22%.

On time 81.4%
Arrived 15+ minutes late 17.6%
Cancelled 0.7%
Diverted 0.3%

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

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

Measure	Aug 2024	Aug 2023	PDX, 12 months to Jul 2026	All reported flights, Aug 2024
Departed on time	82.8%	83.4%	82.7%	75.4%
Arrived on time	81.4%	81.6%	82.0%	74.7%
Cancelled	0.7%	0.7%	0.7%	2.1%
Average departure delay (late minutes only)	12.4 min	11.9 min	11.6 min	18.4 min
Scheduled departures a day	185	176	173	20,634
Scheduled departures	5,542	5,273	63,282	619,025

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	1,461	26%	81.2%	4.7 min	1.0%
WN Southwest Airlines	944	17%	83.2%	3.8 min	0.0%
OO SkyWest Airlines	849	15%	79.9%	7.6 min	0.0%
DL Delta Air Lines	687	12%	88.2%	-2.0 min	0.1%
UA United Airlines	655	12%	85.2%	1.7 min	1.4%
AA American Airlines	350	6%	79.1%	12.9 min	1.7%
NK Spirit Airlines	278	5%	70.1%	21.1 min	1.8%
F9 Frontier Airlines	186	3%	67.2%	14.7 min	1.6%
HA Hawaiian Airlines	62	1%	88.7%	-1.6 min	0.0%
G4 Allegiant Air	39	1%	82.1%	-4.7 min	0.0%
B6 JetBlue Airways	31	1%	41.9%	87.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PDX–SEA	Portland to Seattle	459	83.9%	6.7 min	0.4%
PDX–DEN	Portland to Denver	437	81.0%	3.1 min	0.7%
PDX–LAX	Portland to Los Angeles	422	87.9%	-3.8 min	0.5%
PDX–SFO	Portland to San Francisco	351	79.8%	5.2 min	0.3%
PDX–LAS	Portland to Las Vegas	328	75.9%	10.0 min	0.6%
PDX–PHX	Portland to Phoenix	312	73.4%	14.0 min	0.0%
PDX–ORD	Portland to Chicago	261	82.4%	10.0 min	1.5%
PDX–DFW	Portland to Dallas/Fort Worth	246	76.8%	16.7 min	1.2%
PDX–SJC	Portland to San Jose	236	82.6%	3.5 min	0.0%
PDX–SLC	Portland to Salt Lake City	204	83.8%	3.8 min	0.0%
PDX–SAN	Portland to San Diego	182	80.8%	7.6 min	1.1%
PDX–SMF	Portland to Sacramento	149	84.6%	4.7 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), August 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2024	Minutes
Air carrier	34.2%	33.8%	22,002
Late-arriving aircraft	39.6%	39.8%	25,524
National Aviation System	22.2%	20.4%	14,307
Extreme weather	3.8%	5.9%	2,473
Security	0.1%	0.1%	68

64,374 delay minutes on 977 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 August 2024?

82.8% of 5,542 scheduled domestic departures left less than 15 minutes late, and 81.4% reached their destination on time. The national figures that month were 75.4% and 74.7%.

How does that compare with a year earlier?

In August 2023, 83.4% of 5,273 departures left on time and 0.7% were cancelled, against 82.8% and 0.7% in August 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 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.