Tri Cities in December 2024

84.7%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 2024, reporting carriers scheduled 567 domestic departures from Tri Cities (PSC). 84.7% left less than 15 minutes late and 82.2% reached their destination on time; 0.4% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so PSC departures were 6.9 points above the national departure figure.

A year earlier, in December 2023, the airport had 413 departures with 80.1% leaving on time: a change of +4.6 points, with flights up 37%.

Flights arriving at PSC that month were on time 81.8% of the time (567 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 65%, extreme weather 19% and national aviation system 8%.

On time 82.2%
Arrived 15+ minutes late 17.3%
Cancelled 0.4%
Diverted 0.2%

Every scheduled departure from PSC in December 2024, judged by arrival at the destination.

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

Measure	Dec 2024	Dec 2023	PSC, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	84.7%	80.1%	88.0%	77.8%
Arrived on time	82.2%	78.2%	86.7%	78.1%
Cancelled	0.4%	1.7%	0.5%	0.7%
Average departure delay (late minutes only)	15.6 min	24.5 min	12.2 min	16.6 min
Scheduled departures a day	19	14	17	19,686
Scheduled departures	567	413	6,190	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	462	81%	82.9%	0.5 min	0.2%
G4 Allegiant Air	42	7%	81.0%	3.1 min	2.4%
AS Alaska Airlines	32	6%	75.0%	28.9 min	0.0%
DL Delta Air Lines	31	5%	80.6%	52.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PSC–SEA	Pasco/Kennewick/Richland to Seattle	189	85.7%	2.9 min	0.5%
PSC–SLC	Pasco/Kennewick/Richland to Salt Lake City	90	83.3%	-0.9 min	0.0%
PSC–DEN	Pasco/Kennewick/Richland to Denver	62	79.0%	-2.2 min	0.0%
PSC–PHX	Pasco/Kennewick/Richland to Phoenix	61	83.6%	-2.7 min	0.0%
PSC–SFO	Pasco/Kennewick/Richland to San Francisco	61	75.4%	13.7 min	0.0%
PSC–LAX	Pasco/Kennewick/Richland to Los Angeles	31	77.4%	5.1 min	0.0%
PSC–MSP	Pasco/Kennewick/Richland to Minneapolis	31	80.6%	52.4 min	0.0%
PSC–AZA	Pasco/Kennewick/Richland to Phoenix	22	81.8%	-2.0 min	0.0%
PSC–LAS	Pasco/Kennewick/Richland to Las Vegas	20	80.0%	9.2 min	5.0%

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), December 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	65.2%	34.3%	5,536
Late-arriving aircraft	6.4%	40.2%	546
National Aviation System	8.1%	17.8%	688
Extreme weather	19.1%	7.5%	1,623
Security	1.1%	0.2%	93

8,486 delay minutes on 98 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 PSC on time in December 2024?

84.7% of 567 scheduled domestic departures left less than 15 minutes late, and 82.2% reached their destination on time. The national figures that month were 77.8% and 78.1%.

How does that compare with a year earlier?

In December 2023, 80.1% of 413 departures left on time and 1.7% were cancelled, against 84.7% and 0.4% in December 2024.

Provenance

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