Portland International in January 2026

83.9%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 January 2026, reporting carriers scheduled 4,537 domestic departures from Portland International (PDX). 83.9% left less than 15 minutes late and 84.2% reached their destination on time; 1.4% were cancelled.

Nationally that month, 75.6% of flights departed on time and 75.3% arrived on time, so PDX departures were 8.3 points above the national departure figure.

A year earlier, in January 2025, the airport had 4,401 departures with 86.6% leaving on time: a change of −2.7 points, with flights up 3%.

Flights arriving at PDX that month were on time 82.3% of the time (4,543 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 42%, late-arriving aircraft 31% and national aviation system 18%.

On time 84.2%
Arrived 15+ minutes late 14.1%
Cancelled 1.4%
Diverted 0.2%

Every scheduled departure from PDX in January 2026, judged by arrival at the destination.

January 2026 against a year earlier, the airport's year and the nation

Measure	Jan 2026	Jan 2025	PDX, 12 months to Jul 2026	All reported flights, Jan 2026
Departed on time	83.9%	86.6%	82.7%	75.6%
Arrived on time	84.2%	86.3%	82.0%	75.3%
Cancelled	1.4%	0.9%	0.7%	4.7%
Average departure delay (late minutes only)	11.0 min	9.9 min	11.6 min	16.7 min
Scheduled departures a day	151	147	173	18,133
Scheduled departures	4,537	4,401	63,282	544,003

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	2,012	44%	82.3%	2.1 min	1.2%
OO SkyWest Airlines	668	15%	81.3%	6.1 min	1.0%
WN Southwest Airlines	583	13%	89.4%	-3.1 min	0.0%
DL Delta Air Lines	485	11%	90.3%	-9.3 min	1.4%
UA United Airlines	417	9%	89.4%	-5.9 min	0.5%
AA American Airlines	314	7%	79.3%	14.4 min	7.0%
F9 Frontier Airlines	42	1%	64.3%	10.2 min	4.8%
G4 Allegiant Air	11	0%	90.9%	-4.1 min	0.0%
MQ Envoy Air	5	0%	100.0%	-4.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PDX–SEA	Portland to Seattle	407	85.7%	2.7 min	0.0%
PDX–LAX	Portland to Los Angeles	331	86.4%	-0.3 min	0.6%
PDX–PHX	Portland to Phoenix	299	82.3%	6.8 min	0.7%
PDX–DEN	Portland to Denver	270	87.4%	-3.4 min	0.4%
PDX–SFO	Portland to San Francisco	253	82.6%	3.1 min	0.8%
PDX–LAS	Portland to Las Vegas	225	84.9%	2.3 min	0.9%
PDX–SLC	Portland to Salt Lake City	177	87.0%	-3.6 min	1.1%
PDX–DFW	Portland to Dallas/Fort Worth	169	74.0%	12.6 min	9.5%
PDX–SMF	Portland to Sacramento	160	88.8%	-5.1 min	0.0%
PDX–ORD	Portland to Chicago	140	82.9%	7.9 min	1.4%
PDX–SAN	Portland to San Diego	132	78.0%	5.9 min	0.8%
PDX–SJC	Portland to San Jose	126	86.5%	0.9 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), January 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2026	Minutes
Air carrier	41.6%	37.3%	17,514
Late-arriving aircraft	31.3%	35.0%	13,164
National Aviation System	17.8%	18.0%	7,473
Extreme weather	8.8%	9.6%	3,713
Security	0.5%	0.1%	221

42,085 delay minutes on 641 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 January 2026?

83.9% of 4,537 scheduled domestic departures left less than 15 minutes late, and 84.2% reached their destination on time. The national figures that month were 75.6% and 75.3%.

How does that compare with a year earlier?

In January 2025, 86.6% of 4,401 departures left on time and 0.9% were cancelled, against 83.9% and 1.4% in January 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for January 2026; 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.