FFL Helper
Ontario ONT
$125
LAS → ONT · Frontier Airlines
FFL Helper / Las Vegas / Ontario / September 2026
LAS → ONT · 2026-09
Las Vegas to Ontario in September 2026
Dated one-way fares from Las Vegas to Ontario in September 2026. Use the calendar to see which days are cheaper.
Lowest this month
$125
Highest this month
$125
Sample fare
$101
Airports
LAS–ONT
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Other months: August 2026 · September 2026 · Full route
September 2026 price calendar
September 2026
From $125
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$125
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Dated fares
Booking LAS to ONT in September 2026
This page is only September 2026 on the Las Vegas to Ontario route. Open the full route if you want the next months side by side.
Prices move as seats sell. Confirm the live itinerary before you book Las Vegas to Ontario in September 2026.