LAS to SFO flight delays & on-time performance
Nonstop flights from Harry Reid International Airport to San Francisco International Airport · 414 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LAS or SFO right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Las Vegas (LAS) to San Francisco (SFO) arrived on time 61% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.7% were cancelled, and 12% arrived an hour or more late.
- United Airlines was the most punctual airline here (65% on time); Southwest Airlines was the least (46%).
- Departures scheduled around 6am did best (96% on time); around 7pm did worst (43%).
- Saturday was the most reliable day to fly (73% on time) and Thursday the least (54%).
- The largest source of delay minutes was air traffic control & airport congestion (52%).
Which airline is most on time from LAS to SFO?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 100% | 0.0% | 6 min | 0.0% | 3 |
| United Airlines | 65% | 0.4% | 23 min | 11.6% | 2,793 |
| Alaska Airlines | 65% | 0.8% | 19 min | 9.5% | 1,114 |
| Frontier Airlines | 62% | 1.7% | 27 min | 13.7% | 893 |
| Southwest Airlines | 46% | 0.6% | 30 min | 15.9% | 1,312 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am96%517 flights
- 7am60%636 flights
- 8am54%270 flights
- 9am58%268 flights
- 10am54%235 flights
- 11am72%514 flights
- 12pm54%205 flights
- 1pm64%485 flights
- 2pm52%228 flights
- 3pm67%514 flights
- 4pm71%255 flights
- 5pm61%176 flights
- 6pm54%488 flights
- 7pm43%738 flights
- 8pm42%129 flights
- 9pm48%212 flights
- 10pm45%223 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday58%0.9% cancelled
- Tuesday67%0.4% cancelled
- Wednesday62%0.3% cancelled
- Thursday54%1.3% cancelled
- Friday56%0.8% cancelled
- Saturday73%0.4% cancelled
- Sunday58%0.7% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion52%
- Late-arriving aircraft32%
- Airline (crew, maintenance, cleaning, fueling)15%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)53%
- Air traffic control & airport congestion26%
- Extreme weather21%
- Security0%
LAS to SFO: common questions
- How often are LAS to SFO flights on time?
- 61% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Las Vegas to San Francisco cancelled?
- 0.7% of scheduled flights were cancelled (43 of 6,115).
- How long are typical delays?
- Across all flights the average arrival delay was 24 min (early arrivals count as zero). Flights that were late arrived 59 min behind schedule on average, and 12.4% of flights were an hour or more late.
- How long is taxi time at LAS?
- Flights on this route spent 25 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SFO to LAS — 73% on time
More flights from Las Vegas
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LAS → SFO, nonstop flights by US airlines that report to the DOT. How we calculate this.