Buffalo (BUF) to Las Vegas (LAS) flights
Southwest Airlines flies nonstop from Buffalo Niagara International Airport to Harry Reid International Airport, with about <1 flights a week in July 2026. The 1,986-mile flight takes about 4h 47m gate to gate.
- Distance
- 1,986 mi · 3,196 km
- Flight time
- 4h 47m
- Airlines
- 1
- Seats filled
- 83%
Airlines flying BUF to LAS
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | <1 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 42,764 | 4h 47m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
BUF to LAS flight schedule
3 flight numbers flew this route in August 2026. The first usually leaves at 7:25am and the last at 5:25pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| WN 4947Southwest Airlines | 7:25am | 9:05am | 4 | n/a |
| WN 203Southwest Airlines | 12:00pm | 1:40pm | 4 | n/a |
| WN 3986Southwest Airlines | 5:25pm | 7:10pm | 12 | 75% |
Is BUF to LAS on time?
From September 2025 to August 2026, 81% of 291 flights arrived within 15 minutes of schedule and 0.7% were cancelled. Flights leaving around 6am were the most punctual (95%), those around 5pm the least (65%). Most delay time was caused by late-arriving aircraft (44%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 291 | 81% | 10 min | 0.7% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 5am to 6am | 43 | 88% | |
| 6am to 7am | 41 | 95% | |
| 7am to 8am | 26 | 83% | |
| 8am to 9am | 27 | 89% | |
| 9am to 10am | 28 | 85% | |
| 12pm to 1pm | 26 | 73% | |
| 2pm to 3pm | 38 | 74% | |
| 3pm to 4pm | 22 | 73% | |
| 4pm to 5pm | 12 | 83% | |
| 5pm to 6pm | 20 | 65% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 33 | 5,089 | |
| September 2025 | 30 | 4,737 | |
| October 2025 | 31 | 4,803 | |
| November 2025 | 28 | 3,711 | |
| December 2025 | 29 | 4,091 | |
| January 2026 | 26 | 3,343 | |
| February 2026 | 27 | 3,267 | |
| March 2026 | 25 | 3,800 | |
| April 2026 | 29 | 4,065 | |
| May 2026 | 31 | 4,232 | |
| June 2026 | 7 | 930 | |
| July 2026 | 4 | 696 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.