$44 Cheap Frontier Airlines flights Ontario (ONT) to Portland (PDX)

$44 Cheap Frontier Airlines flights Ontario (ONT) to Portland (PDX)

Prices were available within the past 7 days and start at $44 for one-way flights and $140 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 1 - Sat, Jul 12

ONT

Ontario

PDX

Portland

$140 Roundtrip, found 5 days ago

$140

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Jul 1 from Ontario to Portland, returning Sat, Jul 12, priced at $140 found 5 days ago

Sat, Jul 5 - Tue, Jul 8

ONT

Ontario

PDX

Portland

$145 Roundtrip, found 5 days ago

$145

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Jul 5 from Ontario to Portland, returning Tue, Jul 8, priced at $145 found 5 days ago

Tue, Jul 1 - Sat, Jul 5

ONT

Ontario

PDX

Portland

$150 Roundtrip, found 5 days ago

$150

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Jul 1 from Ontario to Portland, returning Sat, Jul 5, priced at $150 found 5 days ago

Mon, Jun 9 - Tue, Jun 10

ONT

Ontario

PDX

Portland

$153 Roundtrip, found 6 days ago

$153

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, Jun 9 from Ontario to Portland, returning Tue, Jun 10, priced at $153 found 6 days ago

Fri, Jul 4 - Tue, Jul 8

ONT

Ontario

PDX

Portland

$155 Roundtrip, found 5 days ago

$155

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Jul 4 from Ontario to Portland, returning Tue, Jul 8, priced at $155 found 5 days ago

Sat, Jul 5 - Sun, Jul 6

ONT

Ontario

PDX

Portland

$160 Roundtrip, found 5 days ago

$160

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Jul 5 from Ontario to Portland, returning Sun, Jul 6, priced at $160 found 5 days ago