Best Time to Fly LGA to ORD: On-Time Stats by Hour & Airline
LaGuardia → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 68.0% of New York (LGA) to Chicago (ORD) flights arrived on time (11,611 scheduled flights). That is 9.6 points below the national average of 77.6%.
Delta Air Lines was the most punctual of the 6 airlines on the route at 68.9%, while SkyWest Airlines trailed at 61.8%.
September has been the best month (83% on time) and Sunday the weakest day of the week (68%).
5.2% of flights were cancelled, versus 1.8% nationally.
LGA 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 |
|---|---|---|---|---|
| Delta Air Lines | 68.9% | 93 min | 5.5% | 2,306 |
| American Airlines | 68.8% | 92 min | 4.6% | 2,961 |
| Republic Airways | 68.2% | 62 min | 9.4% | 1,288 |
| United Airlines | 67.3% | 86 min | 4.0% | 4,665 |
| Spirit Airlines | 64.5% | 88 min | 6.7% | 299 |
| SkyWest Airlines | 61.8% | 90 min | 17.4% | 92 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LGA to ORD
On-time arrival % by scheduled departure hour (local time), 22,921 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.2% | 0.7% | 147 |
| 6am–7am | 91.7% | 2.8% | 1,812 |
| 7am–8am | 83.2% | 3.4% | 2,057 |
| 8am–9am | 85.0% | 2.5% | 1,683 |
| 9am–10am | 83.3% | 4.0% | 1,375 |
| 10am–11am | 83.3% | 1.5% | 1,163 |
| 11am–12pm | 75.8% | 2.6% | 1,218 |
| 12pm–1pm | 76.9% | 1.8% | 937 |
| 1pm–2pm | 78.8% | 2.3% | 752 |
| 2pm–3pm | 70.8% | 3.2% | 2,002 |
| 3pm–4pm | 68.9% | 3.2% | 746 |
| 4pm–5pm | 59.1% | 4.2% | 2,066 |
| 5pm–6pm | 51.8% | 5.1% | 1,473 |
| 6pm–7pm | 55.6% | 5.2% | 1,976 |
| 7pm–8pm | 62.4% | 5.4% | 1,208 |
| 8pm–9pm | 65.4% | 5.5% | 1,570 |
| 9pm–10pm | 70.4% | 5.0% | 736 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LGA 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) | 70.0% | -4.3 pts | 3.7% | 410 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.9% | -0.4 pts | 1.6% | 647 |
| Summer peak (Jun 15 - Aug 15) | 64.5% | -9.8 pts | 6.7% | 4,006 |
| All other days | 74.3% | — | 3.1% | 17,858 |
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).