Best Time to Fly BTV to ORD: On-Time Stats by Hour & Airline
Patrick Leahy Burlington International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 68.1% of Burlington (BTV) to Chicago (ORD) flights arrived on time (1,248 scheduled flights). That is 9.6 points below the national average of 77.6%.
United Airlines was the most punctual of the 3 airlines on the route at 70.7%, while SkyWest Airlines trailed at 64.5%.
May has been the best month (81% on time) and Sunday the weakest day of the week (66%).
1.9% of flights were cancelled, versus 1.8% nationally.
BTV to ORD 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 |
|---|---|---|---|---|
| United Airlines | 70.7% | 89 min | 0.9% | 684 |
| Envoy Air | 65.1% | 63 min | 0.0% | 63 |
| SkyWest Airlines | 64.5% | 112 min | 3.3% | 483 |
| Republic Airways | Limited data | 18 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BTV to ORD
On-time arrival % by scheduled departure hour (local time), 2,361 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 80.4% | 1.1% | 880 |
| 7am–8am | 83.5% | 1.2% | 166 |
| 9am–10am | Limited data | 12 | |
| 10am–11am | 93.5% | 0.0% | 77 |
| 11am–12pm | 75.0% | 0.0% | 36 |
| 12pm–1pm | 78.0% | 0.0% | 109 |
| 2pm–3pm | Limited data | 13 | |
| 3pm–4pm | Limited data | 20 | |
| 4pm–5pm | 60.4% | 1.1% | 641 |
| 5pm–6pm | 35.2% | 2.0% | 200 |
| 6pm–7pm | 50.0% | 2.9% | 136 |
| 7pm–8pm | 63.1% | 8.4% | 71 |
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 ORD
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) | 74.2% | +1.4 pts | 0.0% | 89 |
| Summer peak (Jun 15 - Aug 15) | 57.2% | -15.6 pts | 2.7% | 485 |
| All other days | 72.8% | — | 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).