Portland International Jetport in August 2023

77.4%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 August 2023, reporting carriers scheduled 1,251 domestic departures from Portland International Jetport (PWM). 77.4% left less than 15 minutes late and 75.7% reached their destination on time; 1.0% were cancelled.

Nationally that month, 76.7% of flights departed on time and 76.9% arrived on time, so PWM departures were 0.7 points above the national departure figure.

Flights arriving at PWM that month were on time 78.0% of the time (1,252 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 47%, late-arriving aircraft 31% and national aviation system 15%.

On time 75.7%
Arrived 15+ minutes late 23.1%
Cancelled 1.0%
Diverted 0.2%

Every scheduled departure from PWM in August 2023, judged by arrival at the destination.

August 2023 against a year earlier, the airport's year and the nation

Measure	Aug 2023	Year earlier	PWM, 12 months to Jul 2026	All reported flights, Aug 2023
Departed on time	77.4%	—	80.0%	76.7%
Arrived on time	75.7%	—	78.2%	76.9%
Cancelled	1.0%	—	2.6%	1.5%
Average departure delay (late minutes only)	21.8 min	—	17.2 min	17.3 min
Scheduled departures a day	42	—	30	20,100
Scheduled departures	1,251	—	10,925	602,987

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	223	18%	73.5%	33.0 min	0.4%
YX Republic Airline	217	17%	89.9%	-6.0 min	0.9%
UA United Airlines	155	12%	72.3%	9.8 min	0.6%
9E Endeavor Air	153	12%	76.5%	3.7 min	2.0%
DL Delta Air Lines	152	12%	71.1%	35.6 min	0.7%
WN Southwest Airlines	151	12%	66.2%	19.8 min	0.7%
B6 JetBlue Airways	110	9%	76.4%	0.1 min	1.8%
MQ Envoy Air	62	5%	77.4%	12.7 min	0.0%
OH PSA Airlines	18	1%	88.9%	1.6 min	0.0%
F9 Frontier Airlines	10	1%	30.0%	24.0 min	20.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PWM–LGA	Portland to New York	164	84.8%	-3.6 min	0.6%
PWM–EWR	Portland to Newark	147	85.0%	-3.3 min	1.4%
PWM–JFK	Portland to New York	124	71.0%	5.1 min	3.2%
PWM–ORD	Portland to Chicago	124	73.4%	9.9 min	0.0%
PWM–BWI	Portland to Baltimore	120	70.8%	17.8 min	0.8%
PWM–PHL	Portland to Philadelphia	93	74.2%	40.6 min	0.0%
PWM–IAD	Portland to Washington	92	90.2%	7.6 min	0.0%
PWM–DCA	Portland to Washington	89	82.0%	11.7 min	1.1%
PWM–CLT	Portland to Charlotte	64	68.8%	38.5 min	0.0%
PWM–ATL	Portland to Atlanta	62	71.0%	42.2 min	1.6%
PWM–DTW	Portland to Detroit	62	69.4%	37.7 min	0.0%
PWM–MSP	Portland to Minneapolis	34	67.6%	20.0 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), August 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2023	Minutes
Air carrier	46.6%	36.7%	12,188
Late-arriving aircraft	31.1%	42.2%	8,131
National Aviation System	14.7%	15.7%	3,853
Extreme weather	7.6%	5.1%	1,978
Security	0.0%	0.2%	0

26,150 delay minutes on 289 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 August 2023?

77.4% of 1,251 scheduled domestic departures left less than 15 minutes late, and 75.7% reached their destination on time. The national figures that month were 76.7% and 76.9%.

How does that compare with a year earlier?

August 2022 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 August 2023; 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.