Patrick Leahy Burlington International in March 2025

84.9%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 March 2025, reporting carriers scheduled 562 domestic departures from Patrick Leahy Burlington International (BTV). 84.9% left less than 15 minutes late and 80.2% reached their destination on time; 1.6% were cancelled.

Nationally that month, 79.9% of flights departed on time and 79.3% arrived on time, so BTV departures were 5.0 points above the national departure figure.

A year earlier, in March 2024, the airport had 479 departures with 88.7% leaving on time: a change of −3.8 points, with flights up 17%.

Flights arriving at BTV that month were on time 77.8% of the time (562 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 36%, late-arriving aircraft 33% and national aviation system 22%.

On time 80.2%
Arrived 15+ minutes late 17.8%
Cancelled 1.6%
Diverted 0.4%

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

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

Measure	Mar 2025	Mar 2024	BTV, 12 months to Jul 2026	All reported flights, Mar 2025
Departed on time	84.9%	88.7%	76.9%	79.9%
Arrived on time	80.2%	84.3%	71.8%	79.3%
Cancelled	1.6%	1.7%	2.9%	1.2%
Average departure delay (late minutes only)	17.3 min	10.0 min	24.0 min	14.9 min
Scheduled departures a day	19	16	17	20,029
Scheduled departures	562	479	6,084	600,872

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	189	34%	83.6%	2.4 min	1.1%
OH PSA Airlines	158	28%	74.7%	15.6 min	3.2%
UA United Airlines	91	16%	82.4%	5.6 min	0.0%
OO SkyWest Airlines	62	11%	80.6%	11.2 min	0.0%
DL Delta Air Lines	31	6%	83.9%	-10.4 min	3.2%
F9 Frontier Airlines	31	6%	77.4%	-8.3 min	3.2%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BTV–DCA	Burlington to Washington	119	73.1%	10.6 min	2.5%
BTV–PHL	Burlington to Philadelphia	88	76.1%	9.8 min	1.1%
BTV–ORD	Burlington to Chicago	82	81.7%	5.0 min	0.0%
BTV–EWR	Burlington to Newark	65	87.7%	5.2 min	0.0%
BTV–DTW	Burlington to Detroit	62	80.6%	11.2 min	0.0%
BTV–IAD	Burlington to Washington	53	92.5%	-13.5 min	1.9%
BTV–ATL	Burlington to Atlanta	31	83.9%	-10.4 min	3.2%
BTV–CLT	Burlington to Charlotte	31	77.4%	41.8 min	6.5%
BTV–MCO	Burlington to Orlando	16	87.5%	-11.7 min	0.0%
BTV–TPA	Burlington to Tampa	15	66.7%	-4.4 min	6.7%

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), March 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2025	Minutes
Air carrier	35.6%	33.0%	3,529
Late-arriving aircraft	32.5%	39.2%	3,219
National Aviation System	21.6%	21.9%	2,141
Extreme weather	10.4%	5.9%	1,030
Security	0.0%	0.1%	0

9,919 delay minutes on 100 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 March 2025?

84.9% of 562 scheduled domestic departures left less than 15 minutes late, and 80.2% reached their destination on time. The national figures that month were 79.9% and 79.3%.

How does that compare with a year earlier?

In March 2024, 88.7% of 479 departures left on time and 1.7% were cancelled, against 84.9% and 1.6% in March 2025.

Provenance

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