$77 Cheap Frontier Airlines flights Portland (PDX) to Ontario (ONT)

$77 Cheap Frontier Airlines flights Portland (PDX) to Ontario (ONT)

Prices were available within the past 7 days and start at $77 for one-way flights and $120 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jan 10 - Thu, Jan 22

PDX

Portland

ONT

Ontario

$120 Roundtrip, found 12 hours ago

$120

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Sat, Jan 10 from Portland to Ontario, returning Thu, Jan 22, priced at $120 found 12 hours ago

Sun, Jan 11 - Wed, Jan 21

PDX

Portland

ONT

Ontario

$138 Roundtrip, found 12 hours ago

$138

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Sun, Jan 11 from Portland to Ontario, returning Wed, Jan 21, priced at $138 found 12 hours ago

Tue, Nov 25 - Wed, Nov 26

PDX

Portland

ONT

Ontario

$248 Roundtrip, found 1 day ago

$248

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Nov 25 from Portland to Ontario, returning Wed, Nov 26, priced at $248 found 1 day ago

Sun, Nov 23 - Wed, Nov 26

PDX

Portland

ONT

Ontario

$262 Roundtrip, found 1 day ago

$262

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Nov 23 from Portland to Ontario, returning Wed, Nov 26, priced at $262 found 1 day ago