Portland International in December 2024

82.2%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 December 2024, reporting carriers scheduled 5,065 domestic departures from Portland International (PDX). 82.2% left less than 15 minutes late and 82.0% reached their destination on time; 0.3% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so PDX departures were 4.4 points above the national departure figure.

A year earlier, in December 2023, the airport had 4,763 departures with 87.4% leaving on time: a change of −5.2 points, with flights up 6%.

Flights arriving at PDX that month were on time 79.0% of the time (5,063 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 36%, air carrier 35% and national aviation system 21%.

On time 82.0%
Arrived 15+ minutes late 17.4%
Cancelled 0.3%
Diverted 0.3%

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

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

Measure	Dec 2024	Dec 2023	PDX, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	82.2%	87.4%	82.7%	77.8%
Arrived on time	82.0%	85.5%	82.0%	78.1%
Cancelled	0.3%	0.4%	0.7%	0.7%
Average departure delay (late minutes only)	12.3 min	8.5 min	11.6 min	16.6 min
Scheduled departures a day	169	159	173	19,686
Scheduled departures	5,065	4,763	63,282	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	1,703	34%	78.0%	5.5 min	0.4%
OO SkyWest Airlines	900	18%	83.9%	1.6 min	0.1%
WN Southwest Airlines	764	15%	82.7%	3.4 min	0.1%
DL Delta Air Lines	568	11%	88.6%	-0.7 min	0.0%
UA United Airlines	522	10%	86.2%	2.1 min	0.4%
AA American Airlines	316	6%	79.4%	4.3 min	0.9%
F9 Frontier Airlines	138	3%	81.9%	1.7 min	0.0%
HA Hawaiian Airlines	62	1%	64.5%	21.4 min	0.0%
NK Spirit Airlines	61	1%	90.2%	-6.0 min	1.6%
G4 Allegiant Air	21	0%	85.7%	86.9 min	0.0%
MQ Envoy Air	10	0%	90.0%	-9.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PDX–LAX	Portland to Los Angeles	400	85.5%	-0.1 min	0.0%
PDX–SEA	Portland to Seattle	375	83.2%	1.3 min	0.3%
PDX–PHX	Portland to Phoenix	360	80.0%	7.4 min	0.0%
PDX–DEN	Portland to Denver	350	86.9%	0.0 min	0.3%
PDX–SFO	Portland to San Francisco	334	76.0%	6.8 min	0.6%
PDX–LAS	Portland to Las Vegas	286	82.5%	4.2 min	0.3%
PDX–DFW	Portland to Dallas/Fort Worth	221	74.2%	3.9 min	1.4%
PDX–SLC	Portland to Salt Lake City	213	86.4%	0.2 min	0.0%
PDX–SJC	Portland to San Jose	196	89.3%	-3.3 min	0.5%
PDX–SAN	Portland to San Diego	162	71.6%	8.0 min	1.9%
PDX–SMF	Portland to Sacramento	161	79.5%	7.2 min	0.0%
PDX–ORD	Portland to Chicago	144	89.6%	-6.0 min	0.0%

By scheduled departure hour

100

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

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

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	35.2%	34.3%	18,966
Late-arriving aircraft	36.1%	40.2%	19,503
National Aviation System	20.8%	17.8%	11,210
Extreme weather	7.7%	7.5%	4,141
Security	0.3%	0.2%	137

53,957 delay minutes on 883 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 December 2024?

82.2% of 5,065 scheduled domestic departures left less than 15 minutes late, and 82.0% reached their destination on time. The national figures that month were 77.8% and 78.1%.

How does that compare with a year earlier?

In December 2023, 87.4% of 4,763 departures left on time and 0.4% were cancelled, against 82.2% and 0.3% in December 2024.

Provenance

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