$81 Cheap Frontier Airlines flights Ontario (ONT) to Portland (PDX)

$81 Cheap Frontier Airlines flights Ontario (ONT) to Portland (PDX)

Prices were available within the past 7 days and start at $81 for one-way flights and $150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 2 - Sun, May 10

ONT

Ontario

PDX

Portland

$150 Roundtrip, found 21 hours ago

$150

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Sat, May 2 from Ontario to Portland, returning Sun, May 10, priced at $150 found 21 hours ago

Fri, May 8 - Fri, May 29

ONT

Ontario

PDX

Portland

$170 Roundtrip, found 21 hours ago

$170

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Fri, May 8 from Ontario to Portland, returning Fri, May 29, priced at $170 found 21 hours ago

Wed, Jun 3 - Sat, Jun 6

ONT

Ontario

PDX

Portland

$190 Roundtrip, found 3 days ago

$190

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Jun 3 from Ontario to Portland, returning Sat, Jun 6, priced at $190 found 3 days ago

Mon, May 4 - Sun, May 10

ONT

Ontario

PDX

Portland

$191 Roundtrip, found 21 hours ago

$191

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Mon, May 4 from Ontario to Portland, returning Sun, May 10, priced at $191 found 21 hours ago

Fri, May 8 - Tue, May 26

ONT

Ontario

PDX

Portland

$195 Roundtrip, found 21 hours ago

$195

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Fri, May 8 from Ontario to Portland, returning Tue, May 26, priced at $195 found 21 hours ago

Sat, Apr 25 - Sun, May 10

ONT

Ontario

PDX

Portland

$209 Roundtrip, found 2 days ago

$209

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Apr 25 from Ontario to Portland, returning Sun, May 10, priced at $209 found 2 days ago

Mon, Jun 1 - Sat, Jun 6

ONT

Ontario

PDX

Portland

$211 Roundtrip, found 3 days ago

$211

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Ontario to Portland, returning Sat, Jun 6, priced at $211 found 3 days ago

Wed, Jun 3 - Thu, Jun 11

ONT

Ontario

PDX

Portland

$215 Roundtrip, found 3 days ago

$215

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Jun 3 from Ontario to Portland, returning Thu, Jun 11, priced at $215 found 3 days ago

Mon, Jun 1 - Mon, Jun 8

ONT

Ontario

PDX

Portland

$232 Roundtrip, found 3 days ago

$232

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Ontario to Portland, returning Mon, Jun 8, priced at $232 found 3 days ago