Route profile
SAT→EWR
Flight reliability, delays and best times to fly from San Antonio to Newark, 1,569 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 60% of comparable major US routes (4,598 compared)
Calculated from 2,057 flights. How this is calculated · What counts as on time
SAT → EWR arrives on time 84.3% of the time; the return trip, EWR → SAT, arrives on time 84.8% of the time.
SAT → EWR spends 23.8 minutes on the ground on a 1,569-mile trip: 14.5 minutes from pushback to wheels-up at SAT and 9.3 minutes from touchdown to gate at EWR.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What sets this route apart
Where SAT to EWR differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
SAT to EWR is at its best against routes of similar length for flights scheduled at 6 AM: 95.2% arrive on time, 4.9 points ahead of the 90.3% those routes manage at that hour. Against all other routes the gap is 4.4 points.
SAT to EWR holds up on Tuesdays better than routes of similar length do: 90.4% on time to their 80.6%, a 9.8 points lead. Against all other routes the gap is 8.8 points.
April is kinder to SAT to EWR than to routes of similar length: 91.4% on time against 79.5%, 11.9 points better. Against all other routes the gap is 11.5 points.
United Airlines does better on SAT to EWR than on its routes of similar length: 85.6% on time here, 80.6% there, 5 points apart. Against all other routes the gap is 5.7 points.
SAT to EWR against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 6 AM departures | 95.2% | routes of similar length | 90.3% | +4.9 pts | 480 here, 116,107 there |
| Weekday: Tuesday | 90.4% | routes of similar length | 80.6% | +9.8 pts | 303 here, 222,091 there |
| Month: April | 91.4% | routes of similar length | 79.5% | +11.9 pts | 151 here, 131,036 there |
| Airline: United Airlines | 85.6% | routes of similar length | 80.6% | +5.0 pts | 1,807 here, 365,093 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 1,569 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
SAT to EWR in context
This route against SAT and EWR as a whole, against similar routes from SAT, and against its own first year, July 2023 – July 2026.
Leaving SAT, SAT to EWR is on time 84.3% of the time, 2.1 points better than the airport’s other departures at SAT (82.2%, from 123,450 flights).
Arriving at EWR, SAT to EWR is on time 84.3% of the time, 6.8 points better than the airport’s other arrivals at EWR (77.5%, from 372,894 flights).
Of the 1,650 flights scheduled in hours with at least 120 flights, 7 AM is the busiest hour with 533 (32.3%), 89.6% of them on time, and 1 PM the quietest with 305 (18.5%), 77.0% of them on time.
Airport comparisons take this route’s flights out of the airport total. Length means within 15% of this route’s distance, with at least 3 other routes from the same origin. On-time gaps are stated at 2 points and 2 standard errors, cancellation gaps at 0.5 points and 2 standard errors, and every group needs 750 flights. These are differences in the flights counted, not causes.
When it goes wrong
July 2023 – July 2026
37 min late
against a median of 11 min early
Percentiles over 2,057 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at EWR after arriving from SAT.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 27% | High risk |
| 45 min | 16% | High risk |
| 60 min | 11% | Some risk |
| 90 min | 7.4% | Some risk |
| 120 min | 6.1% | Some risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 1.36% of the time and diverts 0.53% of the time, which a late arrival never shows up in.
Chance of missing is the share of 2,018 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 37 minutes late (90th-percentile gate arrival delay), over 2,057 operations.
Any other layover length: connection checker.
Why SAT → EWR runs late
July 2023 – July 2026
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for SAT → EWR. Only delays of 15 minutes or more are attributed. What the five causes mean
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| United Airlines | 1,837 | 85.6% | 1.09% | -11 min | 6.5% |
| Spirit Airlines | 220 | 73.5% | 3.64% | -7 min | 16.1% |
United Airlines flew 89.3% of the 2,057 flights listed. Spirit Airlines cancelled 3.64% of its flights here against 1.09% for United Airlines.
United Airlines arrived on time 12.1 percentage points more often than Spirit Airlines on this route.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Thursday the least, a gap of 12.3 percentage points.
By month
- Jan: 88.4%
- Feb: 91.2%
- Mar: 84.6%
- Apr: 91.4%
- May: 80.2%
- Jun: 80.4%
- Jul: 72.1%
- Aug: 82.6%
- Sep: 87.1%
- Oct: 88.7%
- Nov: 84.1%
- Dec: 87.0%
July is historically the weakest month and April the strongest, a spread of 19.3 percentage points.
Reliability over time
July 2023 – July 2026
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 85.7% against 82.5% in the 12 months before — improving by 3.2 percentage points.
Data and methodology
Calculated by FlyerIntel from 2,057 SAT → EWR flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed