Best Time to Fly JFK to BOS: On-Time Stats by Hour & Airline
John F. Kennedy International → Logan International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 73.2% of New York (JFK) to Boston (BOS) flights arrived on time (5,676 scheduled flights). That is 4.4 points below the national average of 77.6%.
Among 3 airlines, Republic Airways led with 77.1% on time and JetBlue was last with 69.1%.
Over 24 months, Tuesday was the most reliable day (79% on time) and July the worst month (66%).
The cancellation rate was 4.3% (US average 1.8%).
JFK 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 |
|---|---|---|---|---|
| Republic Airways | 77.1% | 76 min | 4.4% | 2,889 |
| Delta Air Lines | 69.9% | 93 min | 3.3% | 368 |
| JetBlue | 69.1% | 77 min | 4.3% | 2,419 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly JFK to BOS
On-time arrival % by scheduled departure hour (local time), 11,056 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 19 | |
| 6am–7am | 90.2% | 2.3% | 1,277 |
| 7am–8am | 92.5% | 0.4% | 241 |
| 8am–9am | 88.0% | 0.8% | 646 |
| 9am–10am | 86.4% | 0.9% | 1,185 |
| 10am–11am | 82.4% | 3.1% | 416 |
| 11am–12pm | 81.4% | 1.4% | 223 |
| 12pm–1pm | 80.9% | 1.8% | 224 |
| 1pm–2pm | 69.6% | 3.2% | 665 |
| 2pm–3pm | 68.8% | 3.7% | 935 |
| 3pm–4pm | 66.1% | 6.1% | 424 |
| 4pm–5pm | 59.9% | 6.4% | 388 |
| 5pm–6pm | 65.0% | 5.3% | 1,257 |
| 6pm–7pm | 59.0% | 4.2% | 447 |
| 7pm–8pm | 53.4% | 6.9% | 159 |
| 8pm–9pm | 69.4% | 4.5% | 404 |
| 9pm–10pm | 70.5% | 4.6% | 1,146 |
| 10pm–11pm | 68.5% | 4.7% | 921 |
| 11pm–12am | 82.9% | 3.8% | 79 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on JFK 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) | 78.5% | +1.7 pts | 0.0% | 191 |
| Christmas & New Year (Dec 20 - Jan 3) | 58.2% | -18.6 pts | 4.2% | 330 |
| Summer peak (Jun 15 - Aug 15) | 67.8% | -9.0 pts | 8.3% | 1,855 |
| All other days | 76.8% | — | 2.5% | 8,680 |
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).