ON TIMEBOARD
STS Santa Rosa / LAS Las Vegas

STS → LAS on time

Charles M. Schulz Sonoma (Santa Rosa, CA) to Las Vegas Harry Reid (Las Vegas, NV). Every scheduled flight, September 2025 to August 2026.

On time
79%
arrived < 15 min late
Cancelled
2.0%
500 flights
Typical arrival
−6 min
median vs schedule
When late
+66 min
average delay
Flights / day
1
2 airlines

79% of flights from Santa Rosa to Las Vegas arrived on time over the past 12 months. That is about the typical U.S. route. Most reliable airline: Alaska Airlines (79%). 8% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for STS → LAS: when a flight was late, it was under 45 minutes late 48% of the time. About 1 in 16 flights landed an hour or more late, and 1 in 125 three hours or more; 2.0% were cancelled outright.

Share of all 500 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Alaska Airlines35379%2.8%−5 min6.5%+72 minSkyWest 62%, Horizon Air 35%, Alaska Airlines 4%
Southwest Airlines14778%0.0%−10 min6.1%+54 minSouthwest Airlines

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at STS). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%7 a.m. departures: too few flights (30 flights)7a8 a.m. departures: too few flights8a9 a.m. departures: too few flights (57 flights)9a10 a.m. departures: too few flights (99 flights)10a11 a.m. departures: 85% on time (101 flights)8511anoon departures: too few flights (44 flights)12p1 p.m. departures: too few flights (92 flights)1p2 p.m. departures: too few flights (32 flights)2p3 p.m. departures: too few flights (27 flights)3p
STS → LAS, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

By month

Each calendar month pooled over 2023–2026.

40%70%100%Jan: too few flights (55 flights)JanFeb: too few flights (52 flights)FebMar: too few flights (62 flights)MarApr: too few flights (84 flights)AprMay: too few flights (93 flights)MayJun: too few flights (90 flights)JunJul: too few flights (93 flights)JulAug: too few flights (93 flights)AugSep: too few flights (30 flights)SepOct: too few flights (62 flights)OctNov: too few flights (58 flights)NovDec: too few flights (62 flights)Dec

By day of week

DayFlightsOn timeCancelled
Monday74——
Tuesday68——
Wednesday67——
Thursday72——
Friday73——
Saturday73——
Sunday73——

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Late inbound plane 51%Air traffic & airport (NAS) 21%Airline (crew, maintenance, ops) 19%Severe weather 10%

Cancellations: weather 9 · air traffic/airport 1

Month by month

Not enough months with data to draw a trend.

Questions

How often are flights from STS to LAS on time?

79% of 500 scheduled flights from Santa Rosa, CA to Las Vegas, NV arrived within 15 minutes of schedule between September 2025 and August 2026. 2.0% were cancelled.

Which airline is most on time from STS to LAS?

Alaska Airlines: 79% of its 353 flights on the route arrived on time. Southwest Airlines: 78%.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.