FlightRecord

Patrick Leahy Burlington International Airport (BTV): Delays & On-Time Performance

Data through May 2026

Patrick Leahy Burlington International Airport (BTV) is a tale of two seasons: departures ran 90% on-time in September 2024 but sank to 70% in July 2025. Across the year it averages 82% against a national 78%, over roughly 17 departures a day to 16 destinations.

Departures on-time
82%
left <15 min late
Avg dep delay
21 min
Arrivals on-time
77%
Cancelled
2.8%
Destinations
16
nonstop
Airlines
10

Plan your departure from BTV

The choices most likely to improve your odds, based on this airport’s historical record.

Best departure time
Around 9 a.m.
92% on-time
Best day to fly
Tuesday
79% on-time
Most reliable airline here
Delta Air Lines
88% on-time from BTV
Cancellation risk
2.8%
above the US average
Check routes from BTV ↓

Monthly on-time trend

Monthly departure on-time percentage at BTV50%75%100%June 2024: 82% on-time (756 flights)82Jun 2024July 2024: 78% on-time (795 flights)78August 2024: 82% on-time (861 flights)82September 2024: 90% on-time (873 flights)90Sep 2024October 2024: 89% on-time (904 flights)89November 2024: 90% on-time (645 flights)90December 2024: 80% on-time (673 flights)80Dec 2024January 2025: 85% on-time (536 flights)85February 2025: 76% on-time (450 flights)76March 2025: 86% on-time (562 flights)86Mar 2025April 2025: 87% on-time (572 flights)87May 2025: 81% on-time (609 flights)81June 2025: 71% on-time (598 flights)71Jun 2025July 2025: 70% on-time (648 flights)70August 2025: 80% on-time (579 flights)80September 2025: 82% on-time (565 flights)82Sep 2025October 2025: 80% on-time (670 flights)80November 2025: 81% on-time (368 flights)81December 2025: 72% on-time (394 flights)72Dec 2025January 2026: 78% on-time (443 flights)78February 2026: 78% on-time (433 flights)78March 2026: 82% on-time (438 flights)82Mar 2026April 2026: 83% on-time (497 flights)83May 2026: 86% on-time (549 flights)86

Best time of day to depart from BTV

On-time percentage by scheduled departure hour at BTV5 a.m.: 90% on-time (1,863 flights)56 a.m.: 90% on-time (2,803 flights)67 a.m.: 92% on-time (837 flights)78 a.m.: 89% on-time (161 flights)89 a.m.: 92% on-time (152 flights)910 a.m.: 90% on-time (883 flights)1011 a.m.: 83% on-time (763 flights)1112 p.m.: 79% on-time (1,612 flights)121 p.m.: 83% on-time (483 flights)132 p.m.: 75% on-time (664 flights)143 p.m.: 75% on-time (598 flights)154 p.m.: 73% on-time (1,490 flights)165 p.m.: 68% on-time (1,386 flights)176 p.m.: 64% on-time (338 flights)187 p.m.: 64% on-time (372 flights)19scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday77%23 min
Tuesdaybest79%20 min
Wednesday78%21 min
Thursday76%21 min
Friday76%25 min
Saturday78%24 min
Sunday74%27 min

Next: compare the busiest routes from BTV ↓

Busiest routes from BTV

RouteFlights/12moOn-timeAvg delay
BTV → ORD (Chicago)1,24270%26 min
BTV → DCA (Washington)1,19371%32 min
BTV → PHL (Philadelphia)1,08276%24 min
BTV → EWR (Newark)67879%20 min
BTV → CLT (Charlotte)59180%26 min
BTV → IAD (Washington)40890%10 min
BTV → ATL (Atlanta)38385%12 min
BTV → DTW (Detroit)29878%23 min
BTV → DEN (Denver)22464%34 min

Compare airlines departing BTV ↓

Where flights into BTV come from

RouteFlights/12moOn-timeAvg delay
ORD (Chicago) → BTV1,24272%22 min
DCA (Washington) → BTV1,19474%21 min
PHL (Philadelphia) → BTV1,08077%20 min
IAD (Washington) → BTV59584%13 min
CLT (Charlotte) → BTV59275%17 min
EWR (Newark) → BTV49079%14 min
ATL (Atlanta) → BTV38376%15 min
DTW (Detroit) → BTV29776%23 min

Most reliable routes

  1. BTV → IAD90%
  2. BTV → ATL85%
  3. BTV → CLT80%
  4. BTV → EWR79%
  5. BTV → DTW78%

Most delay-prone routes

  1. BTV → DEN64%
  2. BTV → ORD70%
  3. BTV → DCA71%
  4. BTV → PHL76%
  5. BTV → DTW78%

What causes delays at BTV

Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing BTV.

  • Late-arriving aircraft31%
  • Airline operations37%
  • National airspace system22%
  • Weather10%

Airline performance at BTV

AirlineOn-time departuresAvg delayFlights
Delta Air Lines88%11 min858
Republic Airways86%15 min3,283
Endeavor Air86%15 min1,065
United Airlines84%17 min2,194
Envoy Air80%14 min435
Frontier Airlines79%13 min138
American Airlines79%25 min1,127
PSA Airlines77%29 min4,027
SkyWest Airlines77%29 min1,289

Frequently asked questions

How often are flights delayed at BTV?
18% of departures from Patrick Leahy Burlington International Airport left 15+ minutes late between 2024-06 and 2026-05, with an average departure delay of 21 minutes. The national on-time average over the same period was 78%.
What is the best time of day to depart from BTV?
Flights scheduled around 9 a.m. depart on time 92% of the time at BTV, versus 64% around 6 p.m.. Booking before noon is the usual rule of thumb here.
What is the worst month for delays at BTV?
In this dataset, July 2025 was the weakest month at BTV, with 70% of departures on time.
How often are flights cancelled at BTV?
2.8% of scheduled departures from BTV were cancelled in this period, compared with a national rate of 1.6%.

Popular route pages from this airport

Related guides

Based on 14,418 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.