Pittsburgh International in December 2025

76.9%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 December 2025, reporting carriers scheduled 3,474 domestic departures from Pittsburgh International (PIT). 76.9% left less than 15 minutes late and 72.0% reached their destination on time; 1.5% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so PIT departures were 4.9 points above the national departure figure.

A year earlier, in December 2024, the airport had 3,392 departures with 80.9% leaving on time: a change of −4.0 points, with flights up 2%.

Flights arriving at PIT that month were on time 71.5% of the time (3,475 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 38%, late-arriving aircraft 31% and air carrier 23%.

On time 72.0%
Arrived 15+ minutes late 26.4%
Cancelled 1.5%
Diverted 0.1%

Every scheduled departure from PIT in December 2025, judged by arrival at the destination.

December 2025 against a year earlier, the airport's year and the nation

Measure	Dec 2025	Dec 2024	PIT, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	76.9%	80.9%	80.7%	72.0%
Arrived on time	72.0%	77.9%	79.7%	71.9%
Cancelled	1.5%	0.6%	2.0%	1.5%
Average departure delay (late minutes only)	16.6 min	13.8 min	14.4 min	21.2 min
Scheduled departures a day	116	113	117	19,410
Scheduled departures	3,474	3,392	42,857	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	1,026	30%	74.4%	9.5 min	1.9%
WN Southwest Airlines	886	26%	72.1%	9.8 min	0.8%
AA American Airlines	397	11%	73.8%	9.6 min	0.3%
UA United Airlines	292	8%	75.3%	10.3 min	0.3%
DL Delta Air Lines	256	7%	71.9%	1.4 min	3.5%
G4 Allegiant Air	156	4%	64.7%	28.0 min	0.0%
B6 JetBlue Airways	151	4%	76.8%	8.3 min	2.0%
OO SkyWest Airlines	98	3%	59.2%	36.3 min	2.0%
NK Spirit Airlines	83	2%	73.5%	6.2 min	3.6%
OH PSA Airlines	48	1%	58.3%	17.7 min	10.4%
MQ Envoy Air	33	1%	57.6%	12.9 min	3.0%
AS Alaska Airlines	29	1%	41.4%	26.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PIT–ORD	Pittsburgh to Chicago	303	68.6%	16.5 min	0.3%
PIT–ATL	Pittsburgh to Atlanta	228	78.5%	-2.6 min	3.5%
PIT–LGA	Pittsburgh to New York	222	68.5%	23.5 min	4.5%
PIT–MCO	Pittsburgh to Orlando	186	68.8%	11.5 min	0.5%
PIT–BOS	Pittsburgh to Boston	164	76.2%	8.5 min	0.6%
PIT–CLT	Pittsburgh to Charlotte	159	73.6%	6.7 min	1.3%
PIT–EWR	Pittsburgh to Newark	156	76.3%	0.6 min	3.8%
PIT–DEN	Pittsburgh to Denver	139	72.7%	11.7 min	0.7%
PIT–JFK	Pittsburgh to New York	137	72.3%	14.2 min	2.2%
PIT–DFW	Pittsburgh to Dallas/Fort Worth	130	73.1%	12.1 min	0.0%
PIT–FLL	Pittsburgh to Fort Lauderdale	117	73.5%	5.8 min	3.4%
PIT–DCA	Pittsburgh to Washington	104	57.7%	16.7 min	5.8%

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), December 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	23.1%	33.3%	15,140
Late-arriving aircraft	31.1%	41.1%	20,441
National Aviation System	38.3%	19.1%	25,156
Extreme weather	7.3%	6.4%	4,809
Security	0.2%	0.2%	107

65,653 delay minutes on 916 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 PIT on time in December 2025?

76.9% of 3,474 scheduled domestic departures left less than 15 minutes late, and 72.0% reached their destination on time. The national figures that month were 72.0% and 71.9%.

How does that compare with a year earlier?

In December 2024, 80.9% of 3,392 departures left on time and 0.6% were cancelled, against 76.9% and 1.5% in December 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for PIT · methodology · corrections.