Best Time to Fly BOS to IAH: On-Time Stats by Hour & Airline
Logan International → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
2,021 flights were scheduled from Boston (BOS) to Houston (IAH) in the last 12 months, and 81.0% of those that flew arrived on time, 3.4 points above the US average of 77.6%.
United Airlines was the most punctual of the 2 airlines on the route at 83.5%, while JetBlue trailed at 72.5%.
October has been the best month (87% on time) and Friday the weakest day of the week (77%).
1.7% of flights were cancelled, versus 1.8% nationally.
BOS to IAH 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 | 83.5% | 71 min | 1.4% | 1,561 |
| JetBlue | 72.5% | 59 min | 2.6% | 460 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BOS to IAH
On-time arrival % by scheduled departure hour (local time), 3,976 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.9% | 1.7% | 174 |
| 6am–7am | 91.7% | 0.0% | 36 |
| 7am–8am | 91.3% | 1.5% | 727 |
| 8am–9am | 86.3% | 0.7% | 287 |
| 9am–10am | 81.1% | 2.9% | 246 |
| 10am–11am | 82.3% | 1.4% | 144 |
| 11am–12pm | 85.5% | 5.0% | 80 |
| 12pm–1pm | 59.0% | 3.0% | 99 |
| 1pm–2pm | 85.1% | 0.1% | 697 |
| 2pm–3pm | 58.2% | 1.7% | 174 |
| 3pm–4pm | 72.4% | 1.2% | 646 |
| 4pm–5pm | 75.8% | 0.6% | 158 |
| 5pm–6pm | 67.7% | 0.8% | 495 |
| 7pm–8pm | Limited data | 1 | |
| 8pm–9pm | Limited data | 2 | |
| 9pm–10pm | Limited data | 8 | |
| 10pm–11pm | Limited data | 2 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BOS to IAH
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) | 83.1% | +2.0 pts | 0.0% | 71 |
| Christmas & New Year (Dec 20 - Jan 3) | 79.3% | -1.8 pts | 0.6% | 156 |
| Summer peak (Jun 15 - Aug 15) | 76.0% | -5.1 pts | 2.6% | 842 |
| All other days | 81.1% | — | 1.0% | 2,907 |
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).