Best Time to Fly ORD to LGA: On-Time Stats by Hour & Airline
Chicago O'Hare International → LaGuardia
Data through July 2026 · Last updated October 18, 2026
11,611 flights were scheduled from Chicago (ORD) to New York (LGA) in the last 12 months, and 67.4% of those that flew arrived on time, 10.3 points below the US average of 77.6%.
Among 6 airlines, Republic Airways led with 71.2% on time and Spirit Airlines was last with 51.3%.
Over 24 months, Saturday was the most reliable day (77% on time) and July the worst month (64%).
The cancellation rate was 5.1% (US average 1.8%).
ORD to LGA 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 | 71.2% | 69 min | 8.6% | 1,287 |
| Delta Air Lines | 70.6% | 92 min | 5.5% | 2,306 |
| United Airlines | 67.3% | 79 min | 3.8% | 4,665 |
| American Airlines | 65.0% | 79 min | 4.5% | 2,962 |
| SkyWest Airlines | 61.0% | 69 min | 16.3% | 92 |
| Spirit Airlines | 51.3% | 100 min | 9.4% | 299 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to LGA
On-time arrival % by scheduled departure hour (local time), 22,919 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 91.9% | 1.6% | 189 |
| 6am–7am | 90.0% | 2.5% | 1,802 |
| 7am–8am | 83.1% | 2.3% | 2,083 |
| 8am–9am | 83.6% | 1.2% | 1,864 |
| 9am–10am | 81.8% | 1.8% | 759 |
| 10am–11am | 76.4% | 2.5% | 2,030 |
| 11am–12pm | 74.8% | 3.0% | 1,386 |
| 12pm–1pm | 72.2% | 2.4% | 1,636 |
| 1pm–2pm | 65.2% | 3.1% | 1,020 |
| 2pm–3pm | 66.6% | 3.5% | 1,967 |
| 3pm–4pm | 67.6% | 5.1% | 788 |
| 4pm–5pm | 59.5% | 4.6% | 1,166 |
| 5pm–6pm | 60.1% | 5.1% | 1,942 |
| 6pm–7pm | 56.7% | 4.8% | 1,946 |
| 7pm–8pm | 61.8% | 8.0% | 830 |
| 8pm–9pm | 64.0% | 5.8% | 1,511 |
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 LGA
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) | 64.6% | -9.1 pts | 3.4% | 410 |
| Christmas & New Year (Dec 20 - Jan 3) | 69.2% | -4.5 pts | 1.7% | 644 |
| Summer peak (Jun 15 - Aug 15) | 64.5% | -9.2 pts | 6.3% | 4,005 |
| All other days | 73.7% | — | 2.9% | 17,860 |
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).