Best Time to Fly BTV to IAD: On-Time Stats by Hour & Airline
Patrick Leahy Burlington International → Washington Dulles International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 88.4% of Burlington (BTV) to Washington (IAD) flights arrived on time (313 scheduled flights). That is 10.8 points above the national average of 77.6%.
Among 2 airlines, Republic Airways led with 89.2% on time and United Airlines was last with 85.7%.
Over 24 months, Sunday was the most reliable day (91% on time) and February the worst month (80%).
The cancellation rate was 1.0% (US average 1.8%).
BTV to IAD on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 89.2% | 121 min | 0.8% | 242 |
| United Airlines | 85.7% | 43 min | 1.4% | 71 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BTV to IAD
On-time arrival % by scheduled departure hour (local time), 1,009 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 89.8% | 2.6% | 351 |
| 9am–10am | 94.6% | 0.9% | 112 |
| 10am–11am | 91.6% | 1.1% | 349 |
| 12pm–1pm | 95.9% | 0.0% | 73 |
| 2pm–3pm | 75.0% | 4.3% | 46 |
| 7pm–8pm | 72.2% | 7.7% | 78 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BTV to IAD
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 15 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 90.2% | -0.7 pts | 0.0% | 41 |
| Summer peak (Jun 15 - Aug 15) | 85.5% | -5.4 pts | 5.9% | 272 |
| All other days | 91.0% | — | 0.9% | 681 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).