Route Reliability
Las Vegas → Ontario
LAS–ONT · 197 miles · Harry Reid International Airport to Ontario International Airport
- 77%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 0.8%
- Cancelled
- 2,484
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Frontier Airlines82%720 flights
- 2.Southwest Airlines75%1,764 flights
What the data says
Morning flights do better here.
LAS–ONT flights departing between 6–9 AM arrived on time 94% of the time, versus 60% between 9 PM–12 AM.
Monday is the weak spot.
LAS–ONT flights arrived on time 85% of the time on Saturdays. On Mondays: 73%.
Frontier Airlines has a slight edge here.
Frontier Airlines arrived on time 82% of the time on this route; Southwest Airlines managed 75%.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon73%(391 flights)
- Tue83%(322 flights)
- Wed81%(333 flights)
- Thu75%(387 flights)
- Fri74%(385 flights)
- Sat85%(268 flights)
- Sun73%(378 flights)
- 6–9 AM94%(425 flights)
- 9 AM–12 PM84%(421 flights)
- 12–3 PM80%(407 flights)
- 3–6 PM71%(366 flights)
- 6–9 PM71%(562 flights)
- 9 PM–12 AM60%(283 flights)
Jun 75% → May 76% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 75% | 210 |
| July 2025 | 73% | 213 |
| August 2025 | 82% | 202 |
| September 2025 | 78% | 201 |
| October 2025 | 71% | 228 |
| November 2025 | 74% | 206 |
| December 2025 | 77% | 205 |
| January 2026 | 83% | 209 |
| February 2026 | 80% | 192 |
| March 2026 | 77% | 197 |
| April 2026 | 83% | 202 |
| May 2026 | 76% | 199 |
Same trip, other airports
Keep nerding
Based on 2,484 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.