Best Time to Fly JFK to SAN: On-Time Stats by Hour & Airline
John F. Kennedy International → San Diego International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.2% of New York (JFK) to San Diego (SAN) flights arrived on time (2,415 scheduled flights). That is 1.6 points above the national average of 77.6%.
Among 3 airlines, JetBlue led with 84.9% on time and Alaska Airlines was last with 76.1%.
Over 24 months, Tuesday was the most reliable day (88% on time) and July the worst month (72%).
The cancellation rate was 2.5% (US average 1.8%).
JFK to SAN 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 |
|---|---|---|---|---|
| JetBlue | 84.9% | 59 min | 2.9% | 725 |
| Delta Air Lines | 77.2% | 55 min | 2.9% | 1,040 |
| Alaska Airlines | 76.1% | 64 min | 1.4% | 650 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly JFK to SAN
On-time arrival % by scheduled departure hour (local time), 4,848 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 89.3% | 0.0% | 245 |
| 7am–8am | 86.0% | 1.1% | 268 |
| 8am–9am | 83.7% | 1.7% | 830 |
| 9am–10am | 83.6% | 0.5% | 374 |
| 10am–11am | 78.2% | 2.1% | 192 |
| 11am–12pm | 83.1% | 2.1% | 140 |
| 12pm–1pm | Limited data | 1 | |
| 1pm–2pm | Limited data | 7 | |
| 3pm–4pm | 80.4% | 2.5% | 354 |
| 4pm–5pm | 76.7% | 2.0% | 1,245 |
| 5pm–6pm | 77.7% | 2.7% | 559 |
| 7pm–8pm | Limited data | 3 | |
| 8pm–9pm | 75.2% | 2.6% | 499 |
| 9pm–10pm | 83.6% | 0.0% | 131 |
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 SAN
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) | 75.0% | -7.3 pts | 0.0% | 96 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.4% | -6.9 pts | 3.4% | 205 |
| Summer peak (Jun 15 - Aug 15) | 73.6% | -8.7 pts | 4.1% | 858 |
| All other days | 82.3% | — | 1.2% | 3,689 |
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).