Best Time to Fly SAT to EWR: On-Time Stats by Hour & Airline
San Antonio International → Newark Liberty International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 85.7% of San Antonio (SAT) to Newark (EWR) flights arrived on time (575 scheduled flights). That is 8.1 points above the national average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (91% on time) and July the worst month (76%).
The cancellation rate was 1.0% (US average 1.8%).
SAT to EWR 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 | 85.7% | 76 min | 1.0% | 575 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SAT to EWR
On-time arrival % by scheduled departure hour (local time), 1,205 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 93.3% | 0.5% | 195 |
| 7am–8am | 88.8% | 0.5% | 424 |
| 8am–9am | 89.2% | 0.0% | 37 |
| 9am–10am | Limited data | 10 | |
| 10am–11am | Limited data | 15 | |
| 11am–12pm | 71.7% | 1.6% | 61 |
| 12pm–1pm | 80.1% | 1.8% | 277 |
| 1pm–2pm | 68.6% | 2.8% | 107 |
| 3pm–4pm | Limited data | 2 | |
| 5pm–6pm | Limited data | 1 | |
| 7pm–8pm | 86.5% | 2.6% | 76 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SAT to EWR
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) | Limited data | 24 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 89.1% | +3.5 pts | 1.8% | 56 |
| Summer peak (Jun 15 - Aug 15) | 74.2% | -11.5 pts | 2.6% | 192 |
| All other days | 85.6% | — | 1.0% | 933 |
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).