Best Time to Fly ORD to BTV: On-Time Stats by Hour & Airline
Chicago O'Hare International → Patrick Leahy Burlington International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 69.8% of Chicago (ORD) to Burlington (BTV) flights arrived on time (1,248 scheduled flights). That is 7.9 points below the national average of 77.6%.
Among 3 airlines, Envoy Air led with 82.5% on time and SkyWest Airlines was last with 64.2%.
Over 24 months, Tuesday was the most reliable day (76% on time) and July the worst month (57%).
The cancellation rate was 2.0% (US average 1.8%).
ORD to BTV 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 |
|---|---|---|---|---|
| Envoy Air | 82.5% | 36 min | 0.0% | 63 |
| United Airlines | 72.4% | 64 min | 0.7% | 684 |
| SkyWest Airlines | 64.2% | 86 min | 3.9% | 483 |
| Republic Airways | Limited data | 18 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to BTV
On-time arrival % by scheduled departure hour (local time), 2,361 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 92.4% | 0.0% | 132 |
| 8am–9am | 81.0% | 0.0% | 42 |
| 9am–10am | Limited data | 14 | |
| 10am–11am | 85.1% | 0.0% | 121 |
| 11am–12pm | 82.4% | 0.3% | 596 |
| 12pm–1pm | Limited data | 27 | |
| 1pm–2pm | 60.5% | 0.0% | 109 |
| 2pm–3pm | 65.9% | 0.6% | 169 |
| 3pm–4pm | 57.1% | 6.0% | 67 |
| 4pm–5pm | Limited data | 15 | |
| 5pm–6pm | 54.8% | 0.0% | 31 |
| 6pm–7pm | 66.6% | 0.9% | 856 |
| 7pm–8pm | 52.4% | 7.3% | 68 |
| 8pm–9pm | 64.7% | 9.7% | 113 |
| 9pm–10pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD to BTV
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 | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 78.7% | +3.2 pts | 0.0% | 89 |
| Summer peak (Jun 15 - Aug 15) | 59.4% | -16.1 pts | 2.5% | 485 |
| All other days | 75.5% | — | 1.0% | 1,761 |
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).