FlightRecord

Washington (IAD) to Burlington (BTV): On-Time Performance

Data through May 2026

When you fly IAD to BTV matters as much as anything else about the booking: the route swung from 98% on-time in April 2025 to just 65% in June 2025. Across the full period the route averages 84% on-time against a national 78%. Morning departures also hold up better than evening ones (91% vs 77%), which matters most in the rough months.

On-time
84%
arrived <15 min late
Avg delay
13 min
completed flights
Cancelled
2.0%
Flights/day
1.6
last 12 months
Duration
1h 39m
scheduled
Distance
441 mi

Best airline from IAD to BTV

2 airlines flew this route regularly between 2024-06 and 2026-05.

AirlineOn-timeAvg delayCancelledFlights
Republic Airwaysmost reliable85%13 min2.1%1,175
United Airlines68%18 min0.9%111

Monthly on-time trend

Monthly on-time percentage for IAD to BTV flights50%75%100%June 2024: 85% on-time (61 flights)85Jun 2024July 2024: 79% on-time (61 flights)79August 2024: 83% on-time (62 flights)83September 2024: 87% on-time (60 flights)87Sep 2024October 2024: 97% on-time (59 flights)97November 2024: 90% on-time (48 flights)90December 2024: 81% on-time (57 flights)81Dec 2024January 2025: 77% on-time (65 flights)77February 2025: 73% on-time (42 flights)73March 2025: 98% on-time (53 flights)98Mar 2025April 2025: 98% on-time (56 flights)98May 2025: 79% on-time (67 flights)79June 2025: 65% on-time (71 flights)65Jun 2025July 2025: 82% on-time (96 flights)82August 2025: 85% on-time (72 flights)85September 2025: 84% on-time (32 flights)84Sep 2025October 2025: 89% on-time (45 flights)89November 2025: 96% on-time (24 flights)96December 2025: 74% on-time (31 flights)74Dec 2025January 2026: 83% on-time (31 flights)83February 2026: 78% on-time (59 flights)78March 2026: 77% on-time (53 flights)77Mar 2026April 2026: 94% on-time (34 flights)94May 2026: 92% on-time (47 flights)92

Best time to fly from IAD to BTV

Aim for departures around 8 a.m. (91% on-time); avoid 3 p.m. departures (69%).

On-time percentage by scheduled departure hour, IAD to BTV8 a.m.: 91% on-time (663 flights)812 p.m.: 77% on-time (53 flights)123 p.m.: 69% on-time (73 flights)155 p.m.: 73% on-time (130 flights)1710 p.m.: 78% on-time (354 flights)22scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday87%8 min
Tuesdaybest88%9 min
Wednesday82%10 min
Thursday83%16 min
Friday79%18 min
Saturday80%16 min
Sunday87%15 min

What causes delays on this route

Share of total delay minutes by cause, as reported by carriers to the US DOT.

  • Late-arriving aircraft31%
  • Airline operations33%
  • National airspace system22%
  • Weather15%

Frequently asked questions

How often are flights from IAD to BTV delayed?
16% of IAD–BTV flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 13 minutes.
Which airline is most reliable from IAD to BTV?
Republic Airways has the best on-time record on this route at 85%, based on 1,175 flights. 2 airlines flew IAD–BTV frequently enough to compare in this period.
What is the best time of day to fly from IAD to BTV?
Departures around 8 a.m. have the best record (91% on-time), while departures around 3 p.m. have the worst (69%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
How long is the flight from IAD to BTV?
The scheduled IAD–BTV flight time averages 1h 39m over 441 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
How often are IAD to BTV flights cancelled?
2% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
What is the worst month to fly from IAD to BTV?
June 2025 was the roughest month in this dataset, with only 65% of arrivals on time. The best was April 2025 at 98%. If your dates are flexible, that 34-point gap is worth planning around.

Based on 1,286 flights, 2024-062026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.