Best Time to Fly EWR to SAT: On-Time Stats by Hour & Airline
Newark Liberty International → San Antonio International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 86.8% of Newark (EWR) to San Antonio (SAT) flights arrived on time (575 scheduled flights). That is 9.1 points above the national average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (91% on time) and June the worst month (76%).
The cancellation rate was 1.2% (US average 1.8%).
EWR to SAT 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 | 86.8% | 53 min | 1.2% | 575 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly EWR to SAT
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 | 89.4% | 0.0% | 47 |
| 7am–8am | 88.4% | 1.0% | 201 |
| 8am–9am | 87.6% | 2.0% | 99 |
| 9am–10am | 73.8% | 0.0% | 84 |
| 11am–12pm | 83.4% | 0.4% | 236 |
| 12pm–1pm | 86.3% | 1.0% | 407 |
| 1pm–2pm | 78.3% | 0.0% | 46 |
| 3pm–4pm | 82.7% | 3.6% | 84 |
| 4pm–5pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on EWR to SAT
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) | 83.6% | -3.0 pts | 1.8% | 56 |
| Summer peak (Jun 15 - Aug 15) | 76.1% | -10.5 pts | 2.1% | 192 |
| All other days | 86.6% | — | 0.8% | 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).