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Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Tue, Dec 1 - Wed, Dec 16

SFO

San Francisco Intl.

ONT

Ontario Intl. Airport

$43 Roundtrip, just found

$43

Roundtrip

just found

Select Frontier Airlines flight, departing Tue, Dec 1 from San Francisco Intl. to Ontario Intl. Airport, returning Wed, Dec 16, priced at $43 just found

Thu, Dec 3 - Tue, Dec 15

DEN

Denver Intl.

ONT

Ontario Intl. Airport

$58 Roundtrip, just found

$58

Roundtrip

just found

Select Frontier Airlines flight, departing Thu, Dec 3 from Denver Intl. to Ontario Intl. Airport, returning Tue, Dec 15, priced at $58 just found

Mon, Jan 25 - Thu, Jan 28

PHX

Sky Harbor Intl.

SNA

John Wayne

$64 Roundtrip, found 6 hours ago

$64

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Mon, Jan 25 from Sky Harbor Intl. to John Wayne, returning Thu, Jan 28, priced at $64 found 6 hours ago

Thu, Dec 3 - Mon, Dec 14

SFO

San Francisco Intl.

SNA

John Wayne

$104 Roundtrip, just found

$104

Roundtrip

just found

Select Frontier Airlines flight, departing Thu, Dec 3 from San Francisco Intl. to John Wayne, returning Mon, Dec 14, priced at $104 just found