Portland International in March 2026

83.2%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 March 2026, reporting carriers scheduled 5,113 domestic departures from Portland International (PDX). 83.2% left less than 15 minutes late and 85.3% reached their destination on time; 0.9% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so PDX departures were 10.4 points above the national departure figure.

A year earlier, in March 2025, the airport had 4,760 departures with 87.5% leaving on time: a change of −4.3 points, with flights up 7%.

Flights arriving at PDX that month were on time 79.4% of the time (5,111 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, late-arriving aircraft 36% and national aviation system 16%.

On time 85.3%
Arrived 15+ minutes late 13.6%
Cancelled 0.9%
Diverted 0.2%

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

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

Measure	Mar 2026	Mar 2025	PDX, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	83.2%	87.5%	82.7%	72.8%
Arrived on time	85.3%	85.6%	82.0%	73.2%
Cancelled	0.9%	0.3%	0.7%	2.9%
Average departure delay (late minutes only)	11.7 min	8.8 min	11.6 min	20.3 min
Scheduled departures a day	170	159	173	20,403
Scheduled departures	5,113	4,760	63,282	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	2,176	43%	86.1%	-1.9 min	0.7%
OO SkyWest Airlines	829	16%	86.2%	0.9 min	1.0%
WN Southwest Airlines	679	13%	77.2%	5.9 min	0.4%
DL Delta Air Lines	567	11%	91.7%	-11.6 min	1.9%
UA United Airlines	450	9%	87.1%	-5.4 min	0.9%
AA American Airlines	337	7%	81.6%	9.2 min	2.1%
F9 Frontier Airlines	66	1%	83.3%	-3.8 min	0.0%
G4 Allegiant Air	9	0%	55.6%	11.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PDX–PHX	Portland to Phoenix	410	83.9%	10.4 min	0.5%
PDX–SEA	Portland to Seattle	380	83.2%	2.8 min	2.4%
PDX–LAX	Portland to Los Angeles	367	86.9%	-3.8 min	1.4%
PDX–DEN	Portland to Denver	293	88.1%	-3.6 min	0.0%
PDX–SFO	Portland to San Francisco	288	88.9%	-2.9 min	0.0%
PDX–LAS	Portland to Las Vegas	257	80.9%	2.0 min	0.4%
PDX–SLC	Portland to Salt Lake City	193	91.2%	-9.5 min	1.6%
PDX–DFW	Portland to Dallas/Fort Worth	186	84.4%	-8.1 min	1.6%
PDX–ORD	Portland to Chicago	181	82.9%	1.3 min	2.2%
PDX–SAN	Portland to San Diego	172	84.9%	0.4 min	0.6%
PDX–SMF	Portland to Sacramento	158	83.5%	1.5 min	0.0%
PDX–SNA	Portland to Santa Ana	124	90.3%	-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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	46.0%	33.5%	21,840
Late-arriving aircraft	35.7%	39.3%	16,935
National Aviation System	15.6%	21.0%	7,424
Extreme weather	2.5%	5.9%	1,204
Security	0.1%	0.2%	35

47,438 delay minutes on 693 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 March 2026?

83.2% of 5,113 scheduled domestic departures left less than 15 minutes late, and 85.3% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 87.5% of 4,760 departures left on time and 0.3% were cancelled, against 83.2% and 0.9% in March 2026.

Provenance

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