Patrick Leahy Burlington International in May 2024

85.7%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 May 2024, reporting carriers scheduled 629 domestic departures from Patrick Leahy Burlington International (BTV). 85.7% left less than 15 minutes late and 83.9% reached their destination on time; 1.0% were cancelled.

Nationally that month, 73.4% of flights departed on time and 72.3% arrived on time, so BTV departures were 12.3 points above the national departure figure.

Flights arriving at BTV that month were on time 78.0% of the time (631 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 32% and national aviation system 25%.

On time 83.9%
Arrived 15+ minutes late 14.6%
Cancelled 1.0%
Diverted 0.5%

Every scheduled departure from BTV in May 2024, judged by arrival at the destination.

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

Measure	May 2024	Year earlier	BTV, 12 months to Jul 2026	All reported flights, May 2024
Departed on time	85.7%	—	76.9%	73.4%
Arrived on time	83.9%	—	71.8%	72.3%
Cancelled	1.0%	—	2.9%	1.4%
Average departure delay (late minutes only)	14.4 min	—	24.0 min	20.8 min
Scheduled departures a day	21	—	17	20,325
Scheduled departures	629	—	6,084	609,743

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
9E Endeavor Air	171	27%	81.3%	1.8 min	1.8%
OH PSA Airlines	150	24%	81.3%	18.0 min	0.0%
YX Republic Airline	137	22%	87.6%	-9.5 min	0.7%
UA United Airlines	79	13%	88.6%	-1.6 min	2.5%
AA American Airlines	54	9%	81.5%	6.1 min	0.0%
DL Delta Air Lines	31	5%	87.1%	-7.2 min	0.0%
OO SkyWest Airlines	7	1%	85.7%	31.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BTV–DCA	Burlington to Washington	119	79.8%	21.6 min	0.0%
BTV–LGA	Burlington to New York	84	83.3%	-2.7 min	2.4%
BTV–EWR	Burlington to Newark	74	91.9%	-13.0 min	2.7%
BTV–CLT	Burlington to Charlotte	62	83.9%	2.2 min	0.0%
BTV–JFK	Burlington to New York	62	82.3%	5.5 min	1.6%
BTV–ORD	Burlington to Chicago	62	83.9%	0.8 min	1.6%
BTV–PHL	Burlington to Philadelphia	54	81.5%	6.1 min	0.0%
BTV–IAD	Burlington to Washington	41	92.7%	-11.9 min	0.0%
BTV–ATL	Burlington to Atlanta	31	87.1%	-7.2 min	0.0%
BTV–DTW	Burlington to Detroit	31	77.4%	3.7 min	0.0%
BTV–DEN	Burlington to Denver	9	77.8%	23.0 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), May 2024.

Delay causes

BTS cause category	Share of delay minutes	National, May 2024	Minutes
Air carrier	32.1%	29.8%	2,892
Late-arriving aircraft	40.5%	43.0%	3,645
National Aviation System	24.9%	20.1%	2,243
Extreme weather	1.6%	7.0%	145
Security	0.8%	0.1%	73

8,998 delay minutes on 92 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 May 2024?

85.7% of 629 scheduled domestic departures left less than 15 minutes late, and 83.9% reached their destination on time. The national figures that month were 73.4% and 72.3%.

How does that compare with a year earlier?

May 2023 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

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