Patrick Leahy Burlington International in April 2026

82.7%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 April 2026, reporting carriers scheduled 497 domestic departures from Patrick Leahy Burlington International (BTV). 82.7% left less than 15 minutes late and 79.3% reached their destination on time; 0.6% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so BTV departures were 3.6 points above the national departure figure.

A year earlier, in April 2025, the airport had 572 departures with 86.4% leaving on time: a change of −3.7 points, with flights down 13%.

Flights arriving at BTV that month were on time 76.2% of the time (499 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 45%, late-arriving aircraft 23% and national aviation system 19%.

On time 79.3%
Arrived 15+ minutes late 20.1%
Cancelled 0.6%
Diverted 0.0%

Every scheduled departure from BTV in April 2026, judged by arrival at the destination.

April 2026 against a year earlier, the airport's year and the nation

Measure	Apr 2026	Apr 2025	BTV, 12 months to Jul 2026	All reported flights, Apr 2026
Departed on time	82.7%	86.4%	76.9%	79.1%
Arrived on time	79.3%	83.2%	71.8%	78.9%
Cancelled	0.6%	0.9%	2.9%	0.9%
Average departure delay (late minutes only)	24.6 min	12.6 min	24.0 min	14.5 min
Scheduled departures a day	17	19	17	19,931
Scheduled departures	497	572	6,084	597,919

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	181	36%	79.0%	30.3 min	0.6%
OO SkyWest Airlines	143	29%	73.4%	8.5 min	1.4%
UA United Airlines	60	12%	76.7%	23.9 min	0.0%
YX Republic Airline	59	12%	91.5%	-19.0 min	0.0%
DL Delta Air Lines	32	6%	87.5%	-7.0 min	0.0%
AA American Airlines	22	4%	81.8%	0.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BTV–ORD	Burlington to Chicago	136	69.1%	21.3 min	1.5%
BTV–PHL	Burlington to Philadelphia	90	87.8%	-4.2 min	0.0%
BTV–DCA	Burlington to Washington	83	68.7%	39.4 min	1.2%
BTV–DTW	Burlington to Detroit	66	84.8%	-3.3 min	0.0%
BTV–CLT	Burlington to Charlotte	54	85.2%	43.4 min	0.0%
BTV–ATL	Burlington to Atlanta	32	87.5%	-7.0 min	0.0%
BTV–EWR	Burlington to Newark	30	100.0%	-32.8 min	0.0%
BTV–IAD	Burlington to Washington	3	66.7%	1.0 min	0.0%
BTV–LGA	Burlington to New York	2	50.0%	56.5 min	0.0%
BTV–DEN	Burlington to Denver	1	100.0%	-13.0 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), April 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2026	Minutes
Air carrier	45.2%	33.5%	5,606
Late-arriving aircraft	22.7%	40.4%	2,812
National Aviation System	19.4%	21.0%	2,407
Extreme weather	12.8%	5.0%	1,582
Security	0.0%	0.1%	0

12,407 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 April 2026?

82.7% of 497 scheduled domestic departures left less than 15 minutes late, and 79.3% reached their destination on time. The national figures that month were 79.1% and 78.9%.

How does that compare with a year earlier?

In April 2025, 86.4% of 572 departures left on time and 0.9% were cancelled, against 82.7% and 0.6% in April 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2026; 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.