Portland International in May 2024

81.1%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 May 2024, reporting carriers scheduled 5,114 domestic departures from Portland International (PDX). 81.1% left less than 15 minutes late and 81.0% reached their destination on time; 0.8% were cancelled.

Nationally that month, 73.4% of flights departed on time and 72.3% arrived on time, so PDX departures were 7.7 points above the national departure figure.

Flights arriving at PDX that month were on time 75.8% of the time (5,109 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 34% and national aviation system 21%.

On time 81.0%
Arrived 15+ minutes late 17.9%
Cancelled 0.8%
Diverted 0.4%

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

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

Measure	May 2024	Year earlier	PDX, 12 months to Jul 2026	All reported flights, May 2024
Departed on time	81.1%	—	82.7%	73.4%
Arrived on time	81.0%	—	82.0%	72.3%
Cancelled	0.8%	—	0.7%	1.4%
Average departure delay (late minutes only)	13.5 min	—	11.6 min	20.8 min
Scheduled departures a day	171	—	173	20,325
Scheduled departures	5,114	—	63,282	609,743

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	1,302	25%	80.9%	3.5 min	0.6%
OO SkyWest Airlines	1,004	20%	87.6%	0.5 min	0.0%
WN Southwest Airlines	787	15%	80.9%	3.0 min	0.3%
DL Delta Air Lines	694	14%	88.9%	-2.3 min	0.0%
UA United Airlines	552	11%	73.9%	10.1 min	1.6%
AA American Airlines	342	7%	70.8%	20.4 min	3.2%
F9 Frontier Airlines	175	3%	59.4%	25.9 min	4.0%
NK Spirit Airlines	133	3%	78.2%	5.2 min	0.8%
HA Hawaiian Airlines	64	1%	76.6%	31.1 min	3.1%
B6 JetBlue Airways	31	1%	71.0%	41.7 min	0.0%
G4 Allegiant Air	30	1%	83.3%	-10.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PDX–SEA	Portland to Seattle	467	85.7%	3.6 min	0.2%
PDX–DEN	Portland to Denver	378	78.8%	5.0 min	1.6%
PDX–LAX	Portland to Los Angeles	363	87.1%	1.3 min	0.0%
PDX–LAS	Portland to Las Vegas	326	82.2%	0.4 min	0.3%
PDX–PHX	Portland to Phoenix	326	84.4%	1.7 min	0.3%
PDX–SFO	Portland to San Francisco	291	50.2%	29.3 min	2.1%
PDX–ORD	Portland to Chicago	239	74.5%	14.2 min	0.8%
PDX–DFW	Portland to Dallas/Fort Worth	225	61.3%	27.4 min	5.8%
PDX–SLC	Portland to Salt Lake City	215	90.7%	-6.4 min	0.0%
PDX–OAK	Portland to Oakland	190	84.7%	-0.7 min	0.5%
PDX–SJC	Portland to San Jose	189	86.2%	0.3 min	0.0%
PDX–SMF	Portland to Sacramento	124	85.5%	1.2 min	0.8%

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), May 2024.

Delay causes

BTS cause category	Share of delay minutes	National, May 2024	Minutes
Air carrier	33.7%	29.8%	21,088
Late-arriving aircraft	42.3%	43.0%	26,476
National Aviation System	20.6%	20.1%	12,905
Extreme weather	3.1%	7.0%	1,948
Security	0.2%	0.1%	115

62,532 delay minutes on 915 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 May 2024?

81.1% of 5,114 scheduled domestic departures left less than 15 minutes late, and 81.0% reached their destination on time. The national figures that month were 73.4% and 72.3%.

How does that compare with a year earlier?

May 2023 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

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