Route on-time record

LAS to SJC: most on-time flights and the best time to fly

Las Vegas (Harry Reid International Airport) to San Jose (Norman Y. Mineta San Jose International Airport). 3,944 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 0.4% were cancelled. The most reliable flight number was Southwest 2773 at 5:45 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

LAS → SJC

Las Vegas to San Jose: 3,944 nonstop flights a year

On time (12 months)

79%

Cancelled

0.4%

avg delay 13 min

Best time to leave

Before 9 AM

96% on time vs 65% after 9 PM

Most reliable airline

SkyWest

80% chance on time

Check LAS to SJC fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

#1 · Southwest 2773
5:45 AM → 7:10 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
95%
chance on time
On time (history)
98%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 98% of the time (53 flights, Jun 2025 to May 2026).
- Never cancelled in 53 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Limited track record · 53 flights
Find Southwest 2773 fares Opens this date on Aviasales
#2 · Southwest 2774
7:05 AM → 8:35 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
94%
chance on time
On time (history)
97%
Cancelled
0.0%
Avg arrival delay
2 min
- Arrived on time 97% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Limited track record · 31 flights
Find Southwest 2774 fares Opens this date on Aviasales
#3 · Frontier 1589
7:45 AM → 9:25 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-04-16.
93%
chance on time
On time (history)
100%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 100% of the time (13 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Frontier 1589 fares Opens this date on Aviasales
#4 · Southwest 1325
5:30 AM → 7:00 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-06.
92%
chance on time
On time (history)
96%
Cancelled
0.0%
Avg arrival delay
2 min
- Arrived on time 96% of the time (28 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 1325 fares Opens this date on Aviasales
#5 · Southwest 461
7:40 AM → 9:15 AM1h 35m nonstop
Local times, typical schedule. Last flown 2026-04-06.
92%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 94% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Limited track record · 33 flights
Find Southwest 461 fares Opens this date on Aviasales
#6 · Southwest 4615
8:40 AM → 10:10 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
2 min
- Arrived on time 94% of the time (32 flights, Jun 2025 to May 2026).
- Never cancelled in 32 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Limited track record · 32 flights
Find Southwest 4615 fares Opens this date on Aviasales
#7 · Southwest 1181
10:05 AM → 11:45 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-04-06.
88%
chance on time
On time (history)
95%
Cancelled
0.0%
Avg arrival delay
2 min
- Arrived on time 95% of the time (20 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find Southwest 1181 fares Opens this date on Aviasales
#8 · Southwest 3218
8:55 AM → 10:30 AM1h 35m nonstop
Local times, typical schedule. Last flown 2026-04-06.
84%
chance on time
On time (history)
86%
Cancelled
6.7%
Avg arrival delay
6 min
- Arrived on time 86% of the time (14 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Short track record (14 flights), so its score leans on the airline's record at this hour.
Limited track record · 14 flights
Find Southwest 3218 fares Opens this date on Aviasales
#9 · Southwest 1685
9:20 AM → 10:50 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-29.
83%
chance on time
On time (history)
75%
Cancelled
0.0%
Avg arrival delay
10 min
- Arrived on time 75% of the time (24 flights, Jun 2025 to May 2026).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Southwest 1685 fares Opens this date on Aviasales
#10 · Southwest 2206
11:55 AM → 1:35 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-04-05.
83%
chance on time
On time (history)
92%
Cancelled
0.0%
Avg arrival delay
15 min
- Arrived on time 92% of the time (13 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Southwest 2206 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)80%
232 flights · 80% on time as flown · 0.1% cancel
Spirit Airlines79%
266 flights · 79% on time as flown · 0.4% cancel
Southwest Airlines78%
3,263 flights · 79% on time as flown · 0.3% cancel
Frontier Airlines77%
179 flights · 77% on time as flown · 1.1% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM96%
730 flights · avg delay 2 min
9 AM to noon87%
665 flights · avg delay 8 min
Noon to 3 PM77%
812 flights · avg delay 16 min
3 to 6 PM73%
672 flights · avg delay 15 min
6 to 9 PM69%
732 flights · avg delay 18 min
After 9 PM65%
333 flights · avg delay 21 min

Best day: Saturday (87%). Worst: Sunday (76%).

Smarter routing

Nearby airports that run more on time

LAS → SCK 83% chance on time
Harry Reid International Airport to Stockton Metropolitan Airport · 411 flights a year · 53 mi from your airports · yours: 78%
Rank flights Fares

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

What delays this route

Late-arriving aircraft53%
Airline (crew, maintenance, boarding)38%
Air traffic control and airport volume8%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

LAS to SJC questions

What time of day is best to fly LAS to SJC?: Before 9 AM: 96% of flights arrived on time, against 65% for departures after 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from LAS to SJC?: SkyWest, with a season-adjusted 80% chance of operating and arriving on time over 232 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on LAS to SJC?: July (72% on time); the best was November (86%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?: No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

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Live status: FAA delays and ground stops

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