Best Time to Fly IAH to LGA: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → LaGuardia
Data through July 2026 · Last updated October 18, 2026
4,024 flights were scheduled from Houston (IAH) to New York (LGA) in the last 12 months, and 72.6% of those that flew arrived on time, 5.0 points below the US average of 77.6%.
SkyWest Airlines was the most punctual of the 4 airlines on the route at 83.9%, while Spirit Airlines trailed at 61.5%.
September has been the best month (87% on time) and Sunday the weakest day of the week (71%).
2.9% of flights were cancelled, versus 1.8% nationally.
IAH 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 |
|---|---|---|---|---|
| SkyWest Airlines | 83.9% | 40 min | 3.1% | 32 |
| Delta Air Lines | 77.4% | 95 min | 4.5% | 1,345 |
| United Airlines | 71.0% | 75 min | 1.6% | 2,381 |
| Spirit Airlines | 61.5% | 79 min | 6.4% | 266 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to LGA
On-time arrival % by scheduled departure hour (local time), 8,328 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 87.6% | 2.7% | 449 |
| 7am–8am | 88.2% | 1.9% | 851 |
| 8am–9am | 90.4% | 1.2% | 730 |
| 9am–10am | 79.7% | 1.7% | 413 |
| 10am–11am | 79.7% | 2.2% | 690 |
| 11am–12pm | 81.4% | 1.6% | 246 |
| 12pm–1pm | 69.6% | 0.9% | 574 |
| 1pm–2pm | 85.2% | 1.7% | 118 |
| 2pm–3pm | 66.7% | 2.3% | 1,086 |
| 3pm–4pm | 64.5% | 4.2% | 165 |
| 4pm–5pm | 68.6% | 2.5% | 771 |
| 5pm–6pm | 67.4% | 1.8% | 661 |
| 6pm–7pm | 66.1% | 2.7% | 1,408 |
| 7pm–8pm | 64.9% | 9.0% | 166 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAH 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) | 77.4% | +0.2 pts | 0.6% | 166 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.0% | -4.2 pts | 2.8% | 289 |
| Summer peak (Jun 15 - Aug 15) | 64.3% | -12.9 pts | 3.8% | 1,473 |
| All other days | 77.2% | — | 1.9% | 6,400 |
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).