Best Time to Fly IAH to BOS: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Logan International
Data through July 2026 · Last updated October 18, 2026
2,019 flights were scheduled from Houston (IAH) to Boston (BOS) in the last 12 months, and 71.6% of those that flew arrived on time, 6.0 points below the US average of 77.6%.
United Airlines was the most punctual of the 2 airlines on the route at 75.7%, while JetBlue trailed at 57.4%.
February has been the best month (86% on time) and Thursday the weakest day of the week (70%).
1.5% of flights were cancelled, versus 1.8% nationally.
IAH to BOS 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 | 75.7% | 70 min | 1.1% | 1,559 |
| JetBlue | 57.4% | 91 min | 2.8% | 460 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to BOS
On-time arrival % by scheduled departure hour (local time), 3,976 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 93.7% | 0.8% | 725 |
| 8am–9am | Limited data | 1 | |
| 9am–10am | 82.6% | 0.2% | 514 |
| 10am–11am | 81.1% | 0.0% | 37 |
| 11am–12pm | 69.7% | 1.7% | 178 |
| 12pm–1pm | 64.9% | 0.7% | 565 |
| 1pm–2pm | 62.8% | 2.9% | 246 |
| 2pm–3pm | 67.2% | 1.1% | 274 |
| 3pm–4pm | 53.9% | 4.9% | 41 |
| 4pm–5pm | 63.3% | 2.6% | 313 |
| 5pm–6pm | 54.4% | 0.6% | 160 |
| 6pm–7pm | 72.6% | 1.5% | 791 |
| 7pm–8pm | 66.0% | 3.7% | 108 |
| 8pm–9pm | Limited data | 23 | |
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 BOS
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) | 81.4% | +5.5 pts | 0.0% | 70 |
| Christmas & New Year (Dec 20 - Jan 3) | 80.5% | +4.5 pts | 1.3% | 156 |
| Summer peak (Jun 15 - Aug 15) | 64.5% | -11.5 pts | 2.1% | 844 |
| All other days | 76.0% | — | 1.1% | 2,906 |
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).