Ontario California aerial with San Gabriel Mountains
ONT
Ontario
Philadelphia skyline with City Hall
PHL
Philadelphia

Ontario → Philadelphia

Frontier Airlines · Round Trip · Nonstop

Save $128 (35% off)
Compared to the typical price of $364
$236$364

per person · round trip

Book This Deal

Flight Details

Cabin
Economy
Departs
Jun 8, 2026
Returns
Jun 10, 2026

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