ROC to LAS flight delays & on-time performance
Nonstop flights from Frederick Douglass Greater Rochester International Airport to Harry Reid International Airport · 2,040 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ROC or LAS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Rochester (ROC) to Las Vegas (LAS) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.7% were cancelled, and 7% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 6am did best (89% on time); around 2pm did worst (58%).
- Tuesday was the most reliable day to fly (86% on time) and Saturday the least (62%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (49%).
Which airline is most on time from ROC to LAS?
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 77% | 0.7% | 21 min | 7.4% | 149 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am89%27 flights
- 7am81%42 flights
- 2pm58%20 flights
- 4pm62%13 flights
- 6pm76%25 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%3.6% cancelled
- Tuesday86%0.0% cancelled
- Wednesday85%0.0% cancelled
- Thursday77%0.0% cancelled
- Friday74%0.0% cancelled
- Saturday62%0.0% cancelled
- Sunday79%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)49%
- Air traffic control & airport congestion24%
- Late-arriving aircraft20%
- Extreme weather7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
ROC to LAS: common questions
- How often are ROC to LAS flights on time?
- 77% 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 Rochester to Las Vegas cancelled?
- 0.7% of scheduled flights were cancelled (1 of 149).
- How long are typical delays?
- Across all flights the average arrival delay was 21 min (early arrivals count as zero). Flights that were late arrived 86 min behind schedule on average, and 7.4% of flights were an hour or more late.
- How long is taxi time at ROC?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to ROC — 79% on time
More flights from Rochester
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ROC → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.