Patrick Leahy Burlington International in December 2024

79.6%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 673 domestic departures from Patrick Leahy Burlington International (BTV). 79.6% left less than 15 minutes late and 72.5% reached their destination on time; 0.6% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so BTV departures were 1.8 points above the national departure figure.

A year earlier, in December 2023, the airport had 528 departures with 85.0% leaving on time: a change of −5.4 points, with flights up 27%.

Flights arriving at BTV that month were on time 73.9% of the time (670 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 41%, late-arriving aircraft 26% and national aviation system 24%.

On time 72.5%
Arrived 15+ minutes late 26.9%
Cancelled 0.6%
Diverted 0.0%

Every scheduled departure from BTV 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	BTV, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	79.6%	85.0%	76.9%	77.8%
Arrived on time	72.5%	82.2%	71.8%	78.1%
Cancelled	0.6%	2.7%	2.9%	0.7%
Average departure delay (late minutes only)	18.7 min	14.6 min	24.0 min	16.6 min
Scheduled departures a day	22	18	17	19,686
Scheduled departures	673	528	6,084	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	176	26%	77.3%	0.3 min	1.7%
OH PSA Airlines	166	25%	72.3%	25.8 min	0.0%
9E Endeavor Air	115	17%	74.8%	9.2 min	0.0%
UA United Airlines	114	17%	76.3%	2.4 min	0.0%
OO SkyWest Airlines	44	7%	61.4%	23.0 min	0.0%
DL Delta Air Lines	31	5%	48.4%	15.5 min	0.0%
F9 Frontier Airlines	12	2%	83.3%	-2.4 min	0.0%
AA American Airlines	9	1%	66.7%	0.1 min	0.0%
MQ Envoy Air	4	1%	25.0%	26.8 min	0.0%
G4 Allegiant Air	2	0%	0.0%	15.0 min	50.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BTV–DCA	Burlington to Washington	116	71.6%	15.8 min	0.0%
BTV–PHL	Burlington to Philadelphia	83	72.3%	29.2 min	0.0%
BTV–EWR	Burlington to Newark	79	64.6%	4.8 min	3.8%
BTV–ORD	Burlington to Chicago	74	70.3%	5.4 min	0.0%
BTV–LGA	Burlington to New York	67	73.1%	12.1 min	0.0%
BTV–DTW	Burlington to Detroit	62	71.0%	12.8 min	0.0%
BTV–JFK	Burlington to New York	59	74.6%	10.6 min	0.0%
BTV–IAD	Burlington to Washington	57	93.0%	-13.5 min	0.0%
BTV–ATL	Burlington to Atlanta	31	48.4%	15.5 min	0.0%
BTV–CLT	Burlington to Charlotte	31	87.1%	9.9 min	0.0%
BTV–MCO	Burlington to Orlando	7	100.0%	-11.6 min	0.0%
BTV–TPA	Burlington to Tampa	5	60.0%	10.4 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), December 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	40.8%	34.3%	5,563
Late-arriving aircraft	25.5%	40.2%	3,474
National Aviation System	23.6%	17.8%	3,220
Extreme weather	10.0%	7.5%	1,362
Security	0.0%	0.2%	5

13,624 delay minutes on 181 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 BTV on time in December 2024?

79.6% of 673 scheduled domestic departures left less than 15 minutes late, and 72.5% 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, 85.0% of 528 departures left on time and 2.7% were cancelled, against 79.6% and 0.6% 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 BTV · methodology · corrections.