Portland International Jetport in September 2024

88.2%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 September 2024, reporting carriers scheduled 1,395 domestic departures from Portland International Jetport (PWM). 88.2% left less than 15 minutes late and 85.7% reached their destination on time; 0.1% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so PWM departures were 3.8 points above the national departure figure.

A year earlier, in September 2023, the airport had 1,188 departures with 76.7% leaving on time: a change of +11.5 points, with flights up 17%.

Flights arriving at PWM that month were on time 86.4% of the time (1,394 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 39%, late-arriving aircraft 38% and national aviation system 15%.

On time 85.7%
Arrived 15+ minutes late 13.9%
Cancelled 0.1%
Diverted 0.2%

Every scheduled departure from PWM in September 2024, judged by arrival at the destination.

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

Measure	Sep 2024	Sep 2023	PWM, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	88.2%	76.7%	80.0%	84.4%
Arrived on time	85.7%	76.3%	78.2%	83.9%
Cancelled	0.1%	4.1%	2.6%	0.6%
Average departure delay (late minutes only)	12.4 min	21.2 min	17.2 min	10.6 min
Scheduled departures a day	47	40	30	19,421
Scheduled departures	1,395	1,188	10,925	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	480	34%	89.0%	-5.5 min	0.2%
AA American Airlines	315	23%	83.2%	14.4 min	0.3%
WN Southwest Airlines	179	13%	85.5%	3.6 min	0.0%
UA United Airlines	95	7%	85.3%	-1.2 min	0.0%
DL Delta Air Lines	90	6%	84.4%	3.5 min	0.0%
OO SkyWest Airlines	84	6%	85.7%	2.0 min	0.0%
B6 JetBlue Airways	62	4%	83.9%	7.3 min	0.0%
MQ Envoy Air	52	4%	82.7%	3.8 min	0.0%
F9 Frontier Airlines	19	1%	73.7%	4.0 min	0.0%
9E Endeavor Air	16	1%	81.3%	1.9 min	0.0%
OH PSA Airlines	3	0%	100.0%	-6.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PWM–LGA	Portland to New York	151	89.4%	-4.1 min	0.0%
PWM–ORD	Portland to Chicago	142	84.5%	0.9 min	0.0%
PWM–EWR	Portland to Newark	140	85.0%	-3.3 min	0.7%
PWM–JFK	Portland to New York	122	83.6%	6.6 min	0.0%
PWM–BWI	Portland to Baltimore	120	84.2%	6.4 min	0.0%
PWM–PHL	Portland to Philadelphia	118	82.2%	36.3 min	0.0%
PWM–DCA	Portland to Washington	114	90.4%	-2.8 min	0.0%
PWM–CLT	Portland to Charlotte	94	81.9%	-0.1 min	0.0%
PWM–IAD	Portland to Washington	85	92.9%	-11.6 min	0.0%
PWM–DTW	Portland to Detroit	84	86.9%	0.3 min	0.0%
PWM–ATL	Portland to Atlanta	60	86.7%	1.1 min	0.0%
PWM–DEN	Portland to Denver	30	83.3%	-3.7 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), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	39.0%	38.6%	6,470
Late-arriving aircraft	37.5%	38.4%	6,223
National Aviation System	14.5%	18.2%	2,402
Extreme weather	9.1%	4.8%	1,516
Security	0.0%	0.1%	0

16,611 delay minutes on 194 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 PWM on time in September 2024?

88.2% of 1,395 scheduled domestic departures left less than 15 minutes late, and 85.7% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 76.7% of 1,188 departures left on time and 4.1% were cancelled, against 88.2% and 0.1% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for PWM · methodology · corrections.