Portland International in April 2025

86.6%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 April 2025, reporting carriers scheduled 4,763 domestic departures from Portland International (PDX). 86.6% left less than 15 minutes late and 85.0% reached their destination on time; 0.3% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so PDX departures were 6.0 points above the national departure figure.

A year earlier, in April 2024, the airport had 4,765 departures with 84.6% leaving on time: a change of +2.0 points, with flights down 0%.

Flights arriving at PDX that month were on time 84.1% of the time (4,764 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 32% and national aviation system 26%.

On time 85.0%
Arrived 15+ minutes late 14.4%
Cancelled 0.3%
Diverted 0.3%

Every scheduled departure from PDX in April 2025, judged by arrival at the destination.

April 2025 against a year earlier, the airport's year and the nation

Measure	Apr 2025	Apr 2024	PDX, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	86.6%	84.6%	82.7%	80.6%
Arrived on time	85.0%	83.6%	82.0%	79.5%
Cancelled	0.3%	0.3%	0.7%	0.8%
Average departure delay (late minutes only)	8.5 min	11.4 min	11.6 min	14.1 min
Scheduled departures a day	159	159	173	19,465
Scheduled departures	4,763	4,765	63,282	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	1,475	31%	84.8%	-0.1 min	0.5%
OO SkyWest Airlines	912	19%	86.7%	-1.4 min	0.1%
WN Southwest Airlines	698	15%	80.9%	6.0 min	0.0%
DL Delta Air Lines	555	12%	92.4%	-8.4 min	0.0%
UA United Airlines	493	10%	80.3%	2.5 min	0.0%
AA American Airlines	375	8%	82.4%	-1.5 min	1.1%
F9 Frontier Airlines	94	2%	94.7%	-7.9 min	0.0%
NK Spirit Airlines	76	2%	90.8%	-3.6 min	0.0%
HA Hawaiian Airlines	60	1%	80.0%	5.0 min	0.0%
G4 Allegiant Air	24	1%	75.0%	23.8 min	0.0%
B6 JetBlue Airways	1	0%	100.0%	-7.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PDX–SEA	Portland to Seattle	401	86.8%	-0.8 min	0.2%
PDX–PHX	Portland to Phoenix	383	83.8%	2.2 min	0.0%
PDX–LAX	Portland to Los Angeles	358	93.6%	-8.6 min	0.3%
PDX–DEN	Portland to Denver	344	78.5%	6.8 min	0.3%
PDX–LAS	Portland to Las Vegas	330	87.6%	2.0 min	0.0%
PDX–SFO	Portland to San Francisco	270	78.5%	4.0 min	0.4%
PDX–SLC	Portland to Salt Lake City	208	91.8%	-4.9 min	0.0%
PDX–ORD	Portland to Chicago	203	81.8%	-0.1 min	0.0%
PDX–DFW	Portland to Dallas/Fort Worth	180	71.7%	9.8 min	2.2%
PDX–SMF	Portland to Sacramento	160	78.8%	6.2 min	0.6%
PDX–SJC	Portland to San Jose	139	88.5%	-3.5 min	0.0%
PDX–SAN	Portland to San Diego	135	86.7%	-1.2 min	0.7%

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), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	32.1%	32.7%	12,068
Late-arriving aircraft	39.8%	39.4%	14,969
National Aviation System	26.2%	22.2%	9,858
Extreme weather	1.3%	5.5%	485
Security	0.5%	0.2%	195

37,575 delay minutes on 687 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 April 2025?

86.6% of 4,763 scheduled domestic departures left less than 15 minutes late, and 85.0% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 84.6% of 4,765 departures left on time and 0.3% were cancelled, against 86.6% and 0.3% in April 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2025; 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.