Route on-time record

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

Sacramento (Sacramento International Airport) to Las Vegas (Harry Reid International Airport). 4,380 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was Southwest 4519 at 8:45 AM.

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

SMF → LAS

Sacramento to Las Vegas: 4,380 nonstop flights a year

On time (12 months)

80%

Cancelled

0.6%

avg delay 13 min

Best time to leave

Before 9 AM

94% on time vs 60% after 9 PM

Most reliable airline

SkyWest

88% chance on time

Check SMF to LAS fares

Lowest nonstop fare seen in the next two months: $69 (Frontier 2070 on 2026-11-11). 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 4519
8:45 AM → 10:15 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
94%
chance on time
On time (history)
100%
Cancelled
0.0%
Avg arrival delay
0 min
- Arrived on time 100% of the time (24 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 60%).
- Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Southwest 4519 fares Opens this date on Aviasales
#2 · Southwest 2705
8:05 AM → 9:30 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 1211; its record covers all of them.
92%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
5 min
- Arrived on time 94% of the time (51 flights, Jun 2025 to May 2026).
- Never cancelled in 51 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 60%).
- Short track record (51 flights), so its score leans on the airline's record at this hour.
Limited track record · 51 flights
Find Southwest 2705 fares Opens this date on Aviasales
#3 · Southwest 4338
5:25 AM → 6:50 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
6 min
- Arrived on time 94% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 60%).
- Short track record (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find Southwest 4338 fares Opens this date on Aviasales
#4 · Southwest 742
5:15 AM → 6:40 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
92%
chance on time
On time (history)
96%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 96% of the time (25 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 60%).
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find Southwest 742 fares Opens this date on Aviasales
#5 · Southwest 3433
6:35 AM → 8:00 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
On time (history)
91%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 91% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 60%).
- Short track record (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find Southwest 3433 fares Opens this date on Aviasales
#6 · Southwest 2177
9:20 AM → 10:50 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-06.
89%
chance on time
On time (history)
93%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 93% of the time (28 flights, Jun 2025 to May 2026).
- Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 2177 fares Opens this date on Aviasales
#7 · Southwest 2715
9:05 AM → 10:35 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-30.
88%
chance on time
On time (history)
90%
Cancelled
0.0%
Avg arrival delay
14 min
- Arrived on time 90% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- 77% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 31 flights
Find Southwest 2715 fares Opens this date on Aviasales
#8 · Southwest 2722
7:05 AM → 8:30 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
86%
chance on time
On time (history)
88%
Cancelled
3.0%
Avg arrival delay
7 min
- Arrived on time 88% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 60%).
- Short track record (32 flights), so its score leans on the airline's record at this hour.
Limited track record · 32 flights
Find Southwest 2722 fares Opens this date on Aviasales
#9 · Southwest 2588
11:55 AM → 1:25 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
On time (history)
85%
Cancelled
0.0%
Avg arrival delay
12 min
- Arrived on time 85% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (47 flights), so its score leans on the airline's record at this hour.
Limited track record · 47 flights
Find Southwest 2588 fares Opens this date on Aviasales
#10 · Southwest 346
7:05 PM → 8:35 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
On time (history)
89%
Cancelled
1.8%
Avg arrival delay
4 min
- Arrived on time 89% of the time (54 flights, Jun 2025 to May 2026).
- Short track record (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find Southwest 346 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)88%
495 flights · 90% on time as flown · 1.1% cancel
Spirit Airlines81%
257 flights · 83% on time as flown · 1.4% cancel
Southwest Airlines78%
3,430 flights · 79% on time as flown · 0.3% cancel
Frontier Airlines74%
198 flights · 73% on time as flown · 1.7% cancel

On time by departure time

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

Before 9 AM94%
1,156 flights · avg delay 4 min
9 AM to noon86%
644 flights · avg delay 8 min
Noon to 3 PM76%
821 flights · avg delay 14 min
3 to 6 PM73%
873 flights · avg delay 18 min
6 to 9 PM70%
714 flights · avg delay 19 min
After 9 PM60%
172 flights · avg delay 24 min

Best day: Wednesday (87%). Worst: Friday (74%).

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 aircraft49%
Airline (crew, maintenance, boarding)26%
Air traffic control and airport volume22%
Severe weather2%

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

SMF to LAS questions

What time of day is best to fly SMF to LAS?: Before 9 AM: 94% of flights arrived on time, against 60% 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 SMF to LAS?: SkyWest, with a season-adjusted 88% chance of operating and arriving on time over 495 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 SMF to LAS?: July (75% on time); the best was November (85%), 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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