Route profile
LAS→SAT
Flight reliability, delays and best times to fly from Las Vegas to San Antonio, 1,069 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 59% of comparable major US routes (4,598 compared)
Calculated from 6,758 flights. How this is calculated · What counts as on time
LAS → SAT arrives on time 77.0% of the time; the return trip, SAT → LAS, arrives on time 81.4% of the time, a 4.4-point gap between the two directions of the same city pair.
LAS → SAT spends 21.6 minutes on the ground on a 1,069-mile trip: 16.7 minutes from pushback to wheels-up at LAS and 4.9 minutes from touchdown to gate at SAT.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What sets this route apart
Where LAS to SAT differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
LAS to SAT struggles most at 7 PM: 59.0% of its flights scheduled then arrive on time, 7 points behind the 66.0% on routes of similar length at the same hour. Against all other routes the gap is 8.8 points.
LAS to SAT is at its best against routes of similar length for flights scheduled at 6 AM: 96.2% arrive on time, 5.9 points ahead of the 90.3% those routes manage at that hour. Against all other routes the gap is 5.4 points.
LAS to SAT holds up on Saturdays better than routes of similar length do: 82.0% on time to their 77.1%, a 4.9 points lead. Against all other routes the gap is 2.9 points.
January is kinder to LAS to SAT than to routes of similar length: 82.2% on time against 76.9%, 5.3 points better.
Spirit Airlines does better on LAS to SAT than on its routes of similar length: 83.0% on time here, 73.7% there, 9.3 points apart. Against all other routes the gap is 7.8 points.
LAS to SAT against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 7 PM departures | 59.0% | routes of similar length | 66.0% | −7.0 pts | 398 here, 182,148 there |
| Hour: 6 AM departures | 96.2% | routes of similar length | 90.3% | +5.9 pts | 521 here, 219,090 there |
| Weekday: Saturday | 82.0% | routes of similar length | 77.1% | +4.9 pts | 839 here, 381,298 there |
| Month: January | 82.2% | routes of similar length | 76.9% | +5.3 pts | 488 here, 219,364 there |
| Airline: Spirit Airlines | 83.0% | routes of similar length | 73.7% | +9.3 pts | 1,315 here, 184,902 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 1,069 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.
When it goes wrong
July 2023 – July 2026
41 min late
against a median of 3 min early
Percentiles over 6,758 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at SAT after arriving from LAS.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 42% | Likely to miss |
| 45 min | 22% | High risk |
| 60 min | 14% | Some risk |
| 90 min | 6.5% | Some risk |
| 120 min | 3.9% | Low 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 0.65% of the time and diverts 0.16% of the time, which a late arrival never shows up in.
Chance of missing is the share of 6,703 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 41 minutes late (90th-percentile gate arrival delay), over 6,758 operations.
Any other layover length: connection checker.
Best time to fly
LAS → SAT flights departing 5–9 AM arrived on time 94.0% of the time, against 63.8% for 6–9 PM departures, a gap of 30.2 percentage points.
By departure window
By departure hour
- 12 AM: 78.2% on time from 156 flights
- 1 AM to 4 AM: too few flights to score
- 5 AM: 96.0% on time from 224 flights
- 6 AM: 96.2% on time from 527 flights
- 7 AM: 93.1% on time from 436 flights
- 8 AM: 91.1% on time from 414 flights
- 9 AM: 82.3% on time from 614 flights
- 10 AM: 81.6% on time from 517 flights
- 11 AM: 83.6% on time from 195 flights
- 12 PM: 79.7% on time from 302 flights
- 1 PM: 74.6% on time from 324 flights
- 2 PM: 67.4% on time from 351 flights
- 3 PM: 66.7% on time from 632 flights
- 4 PM: 63.8% on time from 325 flights
- 5 PM: 66.0% on time from 453 flights
- 6 PM: 72.2% on time from 373 flights
- 7 PM: 59.0% on time from 403 flights
- 8 PM: 59.9% on time from 305 flights
- 9 PM: 62.6% on time from 133 flights
- 10 PM to 11 PM: too few flights to score
Why LAS → SAT runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for LAS → SAT. Only delays of 15 minutes or more are attributed. What the five causes mean
Late-arriving aircraft is the largest cause on LAS → SAT, at 49.4%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 94.0% of the time and 6–9 PM departures 63.8%.
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 4,517 | 74.7% | 0.42% | -1 min | 6.9% |
| Spirit Airlines | 1,327 | 83.0% | 0.75% | -8 min | 5.0% |
| Frontier Airlines | 879 | 80.7% | 1.71% | -9 min | 7.7% |
Southwest Airlines flew 67.2% of the 6,723 flights listed. Frontier Airlines cancelled 1.71% of its flights here against 0.42% for Southwest Airlines.
Spirit Airlines arrived on time 8.3 percentage points more often than Southwest Airlines on this route.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
| Flight | Scheduled | Operations | On time |
|---|---|---|---|
| F93418 Frontier Airlines | 3:24 PM | 636 | 81.0% |
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Friday the least, a gap of 10.4 percentage points.
By month
- Jan: 82.2%
- Feb: 84.6%
- Mar: 74.8%
- Apr: 75.9%
- May: 73.3%
- Jun: 71.5%
- Jul: 64.0%
- Aug: 75.1%
- Sep: 78.0%
- Oct: 81.1%
- Nov: 86.0%
- Dec: 81.4%
July is historically the weakest month and November the strongest, a spread of 22.0 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 64.0% from 175 flights
- August 2023: 70.3% from 159 flights
- September 2023: 78.4% from 171 flights
- October 2023: 75.9% from 200 flights
- November 2023: 84.9% from 185 flights
- December 2023: 81.7% from 203 flights
- January 2024: 79.8% from 187 flights
- February 2024: 84.8% from 167 flights
- March 2024: 73.7% from 189 flights
- April 2024: 80.3% from 178 flights
- May 2024: 82.2% from 203 flights
- June 2024: 70.4% from 197 flights
- July 2024: 61.2% from 199 flights
- August 2024: 77.8% from 217 flights
- September 2024: 75.0% from 197 flights
- October 2024: 83.3% from 210 flights
- November 2024: 90.0% from 212 flights
- December 2024: 84.5% from 194 flights
- January 2025: 89.9% from 174 flights
- February 2025: 86.8% from 168 flights
- March 2025: 79.9% from 207 flights
- April 2025: 73.4% from 188 flights
- May 2025: 73.2% from 198 flights
- June 2025: 75.9% from 176 flights
- July 2025: 72.6% from 180 flights
- August 2025: 76.3% from 161 flights
- September 2025: 80.7% from 189 flights
- October 2025: 84.0% from 201 flights
- November 2025: 82.7% from 197 flights
- December 2025: 78.0% from 205 flights
- January 2026: 75.9% from 137 flights
- February 2026: 81.7% from 131 flights
- March 2026: 69.9% from 166 flights
- April 2026: 73.9% from 162 flights
- May 2026: 63.2% from 175 flights
- June 2026: 67.6% from 149 flights
- July 2026: 57.3% from 151 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 74.7% against 80.2% in the 12 months before — declining by 5.5 percentage points.
Data and methodology
Calculated by FlyerIntel from 6,758 LAS → SAT 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