Best Time to Fly LAX to BOS: On-Time Stats by Hour & Airline
Los Angeles International → Logan International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.5% of Los Angeles (LAX) to Boston (BOS) flights arrived on time (4,761 scheduled flights). That is in line with the national average of 77.6%.
Among 4 airlines, United Airlines led with 86.7% on time and American Airlines was last with 75.2%.
Over 24 months, Tuesday was the most reliable day (84% on time) and July the worst month (75%).
The cancellation rate was 1.7% (US average 1.8%).
LAX 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 | 86.7% | 70 min | 1.1% | 716 |
| Delta Air Lines | 77.3% | 88 min | 1.9% | 1,236 |
| JetBlue | 75.2% | 69 min | 1.8% | 1,629 |
| American Airlines | 75.2% | 95 min | 1.6% | 1,180 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAX to BOS
On-time arrival % by scheduled departure hour (local time), 9,520 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 1 | |
| 6am–7am | 90.5% | 0.5% | 738 |
| 7am–8am | 85.4% | 2.1% | 744 |
| 8am–9am | 81.7% | 0.3% | 1,577 |
| 9am–10am | 67.6% | 2.4% | 212 |
| 10am–11am | 67.1% | 1.3% | 680 |
| 11am–12pm | 76.0% | 0.2% | 485 |
| 12pm–1pm | 69.6% | 0.6% | 334 |
| 1pm–2pm | 75.0% | 1.1% | 735 |
| 2pm–3pm | 77.3% | 0.5% | 400 |
| 3pm–4pm | 76.5% | 1.1% | 731 |
| 4pm–5pm | Limited data | 16 | |
| 8pm–9pm | 85.3% | 0.6% | 314 |
| 9pm–10pm | 84.2% | 1.6% | 822 |
| 10pm–11pm | 84.6% | 0.9% | 1,399 |
| 11pm–12am | 85.2% | 0.6% | 332 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAX 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) | 84.8% | +3.7 pts | 0.0% | 185 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.3% | -6.8 pts | 1.6% | 365 |
| Summer peak (Jun 15 - Aug 15) | 78.3% | -2.8 pts | 1.2% | 1,824 |
| All other days | 81.1% | — | 0.8% | 7,146 |
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).