Portland International Jetport in January 2026

74.8%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 January 2026, reporting carriers scheduled 556 domestic departures from Portland International Jetport (PWM). 74.8% left less than 15 minutes late and 68.5% reached their destination on time; 7.7% were cancelled.

Nationally that month, 75.6% of flights departed on time and 75.3% arrived on time, so PWM departures were 0.8 points below the national departure figure.

A year earlier, in January 2025, the airport had 562 departures with 81.1% leaving on time: a change of −6.3 points, with flights down 1%.

Flights arriving at PWM that month were on time 73.0% of the time (556 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, late-arriving aircraft 25% and national aviation system 23%.

On time 68.5%
Arrived 15+ minutes late 23.7%
Cancelled 7.7%
Diverted 0.0%

Every scheduled departure from PWM in January 2026, judged by arrival at the destination.

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

Measure	Jan 2026	Jan 2025	PWM, 12 months to Jul 2026	All reported flights, Jan 2026
Departed on time	74.8%	81.1%	80.0%	75.6%
Arrived on time	68.5%	77.0%	78.2%	75.3%
Cancelled	7.7%	4.3%	2.6%	4.7%
Average departure delay (late minutes only)	18.9 min	20.8 min	17.2 min	16.7 min
Scheduled departures a day	19	19	30	18,133
Scheduled departures	556	562	10,925	544,003

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	219	39%	70.8%	8.8 min	9.1%
WN Southwest Airlines	97	17%	75.3%	11.8 min	4.1%
AA American Airlines	88	16%	62.5%	4.7 min	9.1%
OH PSA Airlines	70	13%	71.4%	1.9 min	11.4%
OO SkyWest Airlines	33	6%	33.3%	75.6 min	6.1%
DL Delta Air Lines	31	6%	80.6%	-2.1 min	3.2%
B6 JetBlue Airways	13	2%	61.5%	26.8 min	0.0%
UA United Airlines	5	1%	80.0%	-6.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PWM–BWI	Portland to Baltimore	97	75.3%	11.8 min	4.1%
PWM–DCA	Portland to Washington	93	60.2%	9.3 min	7.5%
PWM–EWR	Portland to Newark	77	75.3%	4.5 min	7.8%
PWM–LGA	Portland to New York	61	68.9%	7.6 min	11.5%
PWM–PHL	Portland to Philadelphia	57	71.9%	1.0 min	14.0%
PWM–ORD	Portland to Chicago	36	55.6%	49.9 min	5.6%
PWM–DTW	Portland to Detroit	33	57.6%	27.3 min	0.0%
PWM–ATL	Portland to Atlanta	31	80.6%	-2.1 min	3.2%
PWM–CLT	Portland to Charlotte	31	67.7%	-0.7 min	12.9%
PWM–JFK	Portland to New York	27	66.7%	17.8 min	14.8%
PWM–MCO	Portland to Orlando	13	61.5%	26.8 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), January 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2026	Minutes
Air carrier	45.7%	37.3%	4,913
Late-arriving aircraft	24.7%	35.0%	2,660
National Aviation System	22.6%	18.0%	2,429
Extreme weather	6.9%	9.6%	747
Security	0.0%	0.1%	0

10,749 delay minutes on 132 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 January 2026?

74.8% of 556 scheduled domestic departures left less than 15 minutes late, and 68.5% reached their destination on time. The national figures that month were 75.6% and 75.3%.

How does that compare with a year earlier?

In January 2025, 81.1% of 562 departures left on time and 4.3% were cancelled, against 74.8% and 7.7% in January 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for January 2026; 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.