FlightRecord

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

Data through July 2026

Patrick Leahy Burlington International Airport (BTV) is a tale of two seasons: departures ran 90% on-time in September 2024 but sank to 69% in July 2026. Across the year it averages 81% against a national 78%, over roughly 17 departures a day to 16 destinations.

Departures on-time
81%
left <15 min late
Avg dep delay
22 min
Arrivals on-time
76%
Cancelled
3.0%
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
89% on-time from BTV
Cancellation risk
3.0%
above the US average
Check routes from BTV ↓

Monthly on-time trend

Monthly departure on-time percentage at BTV50%75%100%August 2024: 82% on-time (861 flights)82Aug 2024September 2024: 90% on-time (873 flights)90October 2024: 89% on-time (904 flights)89November 2024: 90% on-time (645 flights)90Nov 2024December 2024: 80% on-time (673 flights)80January 2025: 85% on-time (536 flights)85February 2025: 76% on-time (450 flights)76Feb 2025March 2025: 86% on-time (562 flights)86April 2025: 87% on-time (572 flights)87May 2025: 81% on-time (609 flights)81May 2025June 2025: 71% on-time (598 flights)71July 2025: 70% on-time (648 flights)70August 2025: 80% on-time (579 flights)80Aug 2025September 2025: 82% on-time (565 flights)82October 2025: 80% on-time (670 flights)80November 2025: 81% on-time (368 flights)81Nov 2025December 2025: 72% on-time (394 flights)72January 2026: 78% on-time (443 flights)78February 2026: 78% on-time (433 flights)78Feb 2026March 2026: 82% on-time (438 flights)82April 2026: 83% on-time (497 flights)83May 2026: 86% on-time (549 flights)86May 2026June 2026: 77% on-time (554 flights)77July 2026: 69% on-time (594 flights)69

Best time of day to depart from BTV

On-time percentage by scheduled departure hour at BTV5 a.m.: 90% on-time (1,845 flights)56 a.m.: 89% on-time (2,892 flights)67 a.m.: 92% on-time (861 flights)78 a.m.: 86% on-time (135 flights)89 a.m.: 92% on-time (164 flights)910 a.m.: 90% on-time (876 flights)1011 a.m.: 85% on-time (742 flights)1112 p.m.: 79% on-time (1,637 flights)121 p.m.: 83% on-time (504 flights)132 p.m.: 75% on-time (736 flights)143 p.m.: 73% on-time (646 flights)154 p.m.: 73% on-time (1,536 flights)165 p.m.: 66% on-time (1,378 flights)176 p.m.: 61% on-time (387 flights)187 p.m.: 63% on-time (458 flights)19scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday76%24 min
Tuesdaybest79%20 min
Wednesday77%23 min
Thursday75%22 min
Friday75%26 min
Saturday77%25 min
Sunday74%27 min

Next: compare the busiest routes from BTV ↓

Busiest routes from BTV

RouteFlights/12moOn-timeAvg delay
BTV → ORD (Chicago)1,24870%28 min
BTV → DCA (Washington)1,14370%33 min
BTV → PHL (Philadelphia)1,11775%25 min
BTV → CLT (Charlotte)64479%26 min
BTV → EWR (Newark)59279%20 min
BTV → ATL (Atlanta)39185%12 min
BTV → DTW (Detroit)33878%23 min
BTV → IAD (Washington)31390%10 min
BTV → DEN (Denver)21964%34 min

Compare airlines departing BTV ↓

Where flights into BTV come from

RouteFlights/12moOn-timeAvg delay
ORD (Chicago) → BTV1,24872%23 min
DCA (Washington) → BTV1,14473%22 min
PHL (Philadelphia) → BTV1,11676%21 min
CLT (Charlotte) → BTV64575%19 min
IAD (Washington) → BTV50084%13 min
EWR (Newark) → BTV40480%13 min
ATL (Atlanta) → BTV39175%15 min
DTW (Detroit) → BTV33876%23 min

Most reliable routes

  1. BTV → IAD90%
  2. BTV → ATL85%
  3. BTV → CLT79%
  4. BTV → EWR79%
  5. BTV → DTW78%

Most delay-prone routes

  1. BTV → DEN64%
  2. BTV → ORD70%
  3. BTV → DCA70%
  4. BTV → PHL75%
  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 operations36%
  • National airspace system22%
  • Weather10%

Airline performance at BTV

AirlineOn-time departuresAvg delayFlights
Delta Air Lines89%11 min878
Endeavor Air87%14 min897
Republic Airways86%15 min3,304
United Airlines83%19 min2,259
Frontier Airlines79%13 min138
Envoy Air79%14 min391
American Airlines78%25 min1,107
PSA Airlines76%30 min4,372
SkyWest Airlines76%30 min1,462

Frequently asked questions

How often are flights delayed at BTV?
19% of departures from Patrick Leahy Burlington International Airport left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 22 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 61% 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 2026 was the weakest month at BTV, with 69% of departures on time.
How often are flights cancelled at BTV?
3% 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 14,810 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.