Phoenix skyline with desert mountains
PHX
Phoenix
Ontario California aerial with San Gabriel Mountains
ONT
Ontario

Phoenix → Ontario

Frontier Airlines · Round Trip · Nonstop

Save $134 (50% off)
Compared to the typical price of $269
$135$269

per person · round trip

Book This Deal

Flight Details

Cabin
Economy
Departs
May 21, 2026
Returns
May 24, 2026

Price History

Avg: $149
Low: $135
High: $176
Current price is the lowest recorded!
$120$143$167$190Apr 2Apr 5Apr 6

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