Patrick Leahy Burlington International in January 2025

81.7%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 January 2025, reporting carriers scheduled 536 domestic departures from Patrick Leahy Burlington International (BTV). 81.7% left less than 15 minutes late and 78.0% reached their destination on time; 3.4% were cancelled.

Nationally that month, 79.3% of flights departed on time and 78.6% arrived on time, so BTV departures were 2.4 points above the national departure figure.

A year earlier, in January 2024, the airport had 525 departures with 77.3% leaving on time: a change of +4.4 points, with flights up 2%.

Flights arriving at BTV that month were on time 75.1% of the time (535 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 38%, air carrier 31% and national aviation system 25%.

On time 78.0%
Arrived 15+ minutes late 18.5%
Cancelled 3.4%
Diverted 0.2%

Every scheduled departure from BTV in January 2025, judged by arrival at the destination.

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

Measure	Jan 2025	Jan 2024	BTV, 12 months to Jul 2026	All reported flights, Jan 2025
Departed on time	81.7%	77.3%	76.9%	79.3%
Arrived on time	78.0%	73.7%	71.8%	78.6%
Cancelled	3.4%	4.6%	2.9%	3.0%
Average departure delay (late minutes only)	13.8 min	23.6 min	24.0 min	14.0 min
Scheduled departures a day	18	18	17	17,992
Scheduled departures	536	525	6,084	539,747

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	166	31%	72.3%	9.0 min	6.0%
YX Republic Airline	123	23%	83.7%	-5.3 min	3.3%
UA United Airlines	103	19%	80.6%	4.9 min	0.0%
OO SkyWest Airlines	60	11%	86.7%	-6.7 min	0.0%
DL Delta Air Lines	31	6%	80.6%	-3.4 min	3.2%
F9 Frontier Airlines	31	6%	64.5%	3.9 min	3.2%
MQ Envoy Air	22	4%	68.2%	-1.5 min	9.1%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BTV–DCA	Burlington to Washington	120	65.8%	11.7 min	9.2%
BTV–PHL	Burlington to Philadelphia	81	77.8%	9.4 min	0.0%
BTV–ORD	Burlington to Chicago	67	80.6%	8.1 min	0.0%
BTV–EWR	Burlington to Newark	62	85.5%	-8.9 min	3.2%
BTV–DTW	Burlington to Detroit	60	86.7%	-6.7 min	0.0%
BTV–IAD	Burlington to Washington	40	82.5%	-4.5 min	2.5%
BTV–ATL	Burlington to Atlanta	31	80.6%	-3.4 min	3.2%
BTV–CLT	Burlington to Charlotte	31	90.3%	-17.0 min	6.5%
BTV–MCO	Burlington to Orlando	18	61.1%	8.6 min	0.0%
BTV–TPA	Burlington to Tampa	13	69.2%	-3.2 min	7.7%
BTV–JFK	Burlington to New York	8	75.0%	-6.2 min	0.0%
BTV–LGA	Burlington to New York	5	100.0%	-14.2 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), January 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2025	Minutes
Air carrier	30.6%	36.2%	2,272
Late-arriving aircraft	37.9%	34.7%	2,809
National Aviation System	24.8%	19.9%	1,842
Extreme weather	6.5%	9.1%	483
Security	0.1%	0.2%	8

7,414 delay minutes on 99 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 January 2025?

81.7% of 536 scheduled domestic departures left less than 15 minutes late, and 78.0% reached their destination on time. The national figures that month were 79.3% and 78.6%.

How does that compare with a year earlier?

In January 2024, 77.3% of 525 departures left on time and 4.6% were cancelled, against 81.7% and 3.4% in January 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for January 2025; 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.