FFL Helper
Ontario ONT
$63
PHX → ONT · Frontier Airlines
FFL Helper / Phoenix / Ontario / September 2026
PHX → ONT · 2026-09
Phoenix to Ontario in September 2026
Dated one-way fares from Phoenix to Ontario in September 2026. Use the calendar to see which days are cheaper.
Lowest this month
$63
Highest this month
$63
Sample fare
$63
Airports
PHX–ONT
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Other months: August 2026 · September 2026 · Full route
September 2026 price calendar
September 2026
From $63
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Wed
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Sun
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$63
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Dated fares
Booking PHX to ONT in September 2026
This page is only September 2026 on the Phoenix 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 Phoenix to Ontario in September 2026.