Best Time to Fly LAS to ONT
Las Vegas to Ontario — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
LAS → ONT on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 831 |
| February | 1% | 0% | 756 |
| March | 1% | 0% | 863 |
| April | 1% | 0% | 860 |
| May | 1% | 0% | 885 |
| June | 1% | 0% | 854 |
| July | 1% | 0% | 893 |
| August | 1% | 0% | 681 |
| September | 1% | 0% | 689 |
| October | 1% | 0% | 758 |
| November | 1% | 0% | 688 |
| December | 1% | 0% | 648 |
Frequently asked
What is the best month to fly from LAS to ONT?
January has the highest on-time rate at 1% for flights from Las Vegas to Ontario.
What is the worst month to fly LAS to ONT?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are LAS to ONT flights delayed?
On average, 1% of flights from LAS to ONT arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.