Portland International Jetport in March 2026

76.8%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 March 2026, reporting carriers scheduled 641 domestic departures from Portland International Jetport (PWM). 76.8% left less than 15 minutes late and 71.1% reached their destination on time; 4.4% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so PWM departures were 4.0 points above the national departure figure.

A year earlier, in March 2025, the airport had 549 departures with 85.4% leaving on time: a change of −8.6 points, with flights up 17%.

Flights arriving at PWM that month were on time 67.8% of the time (642 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 43%, late-arriving aircraft 34% and national aviation system 19%.

On time 71.1%
Arrived 15+ minutes late 24.0%
Cancelled 4.4%
Diverted 0.5%

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

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

Measure	Mar 2026	Mar 2025	PWM, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	76.8%	85.4%	80.0%	72.8%
Arrived on time	71.1%	82.5%	78.2%	73.2%
Cancelled	4.4%	0.9%	2.6%	2.9%
Average departure delay (late minutes only)	24.2 min	14.7 min	17.2 min	20.3 min
Scheduled departures a day	21	18	30	20,403
Scheduled departures	641	549	10,925	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	193	30%	68.4%	8.8 min	6.2%
WN Southwest Airlines	106	17%	76.4%	7.5 min	0.0%
OH PSA Airlines	94	15%	61.7%	30.3 min	11.7%
OO SkyWest Airlines	71	11%	67.6%	26.0 min	4.2%
AA American Airlines	57	9%	78.9%	29.0 min	1.8%
MQ Envoy Air	54	8%	72.2%	26.3 min	1.9%
DL Delta Air Lines	31	5%	83.9%	-2.4 min	0.0%
UA United Airlines	20	3%	80.0%	3.5 min	0.0%
B6 JetBlue Airways	15	2%	73.3%	25.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PWM–ORD	Portland to Chicago	116	66.4%	30.5 min	5.2%
PWM–BWI	Portland to Baltimore	106	76.4%	7.5 min	0.0%
PWM–DCA	Portland to Washington	88	65.9%	46.6 min	10.2%
PWM–LGA	Portland to New York	83	61.4%	12.2 min	10.8%
PWM–EWR	Portland to Newark	77	76.6%	-1.9 min	1.3%
PWM–DTW	Portland to Detroit	54	74.1%	14.9 min	0.0%
PWM–PHL	Portland to Philadelphia	33	66.7%	11.4 min	9.1%
PWM–ATL	Portland to Atlanta	31	83.9%	-2.4 min	0.0%
PWM–CLT	Portland to Charlotte	31	77.4%	1.9 min	0.0%
PWM–MCO	Portland to Orlando	13	69.2%	32.8 min	0.0%
PWM–JFK	Portland to New York	9	100.0%	-12.2 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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	42.5%	33.5%	6,505
Late-arriving aircraft	34.2%	39.3%	5,243
National Aviation System	19.4%	21.0%	2,971
Extreme weather	2.8%	5.9%	422
Security	1.1%	0.2%	168

15,309 delay minutes on 154 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 March 2026?

76.8% of 641 scheduled domestic departures left less than 15 minutes late, and 71.1% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 85.4% of 549 departures left on time and 0.9% were cancelled, against 76.8% and 4.4% in March 2026.

Provenance

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