$89 Cheap Frontier Airlines flights Ontario (ONT) to Portland (PDX)

$89 Cheap Frontier Airlines flights Ontario (ONT) to Portland (PDX)

Prices were available within the past 7 days and start at $89 for one-way flights and $194 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Dec 12 - Thu, Jan 8

ONT

Ontario

PDX

Portland

$194 Roundtrip, found 18 hours ago

$194

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Fri, Dec 12 from Ontario to Portland, returning Thu, Jan 8, priced at $194 found 18 hours ago

Sun, Oct 12 - Tue, Oct 14

ONT

Ontario

PDX

Portland

$203 Roundtrip, found 23 hours ago

$203

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sun, Oct 12 from Ontario to Portland, returning Tue, Oct 14, priced at $203 found 23 hours ago

Sun, Oct 12 - Mon, Oct 13

ONT

Ontario

PDX

Portland

$204 Roundtrip, found 23 hours ago

$204

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sun, Oct 12 from Ontario to Portland, returning Mon, Oct 13, priced at $204 found 23 hours ago

Wed, Oct 8 - Sun, Oct 12

ONT

Ontario

PDX

Portland

$228 Roundtrip, found 23 hours ago

$228

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Wed, Oct 8 from Ontario to Portland, returning Sun, Oct 12, priced at $228 found 23 hours ago

Mon, Nov 24 - Wed, Nov 26

ONT

Ontario

PDX

Portland

$230 Roundtrip, found 17 hours ago

$230

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Mon, Nov 24 from Ontario to Portland, returning Wed, Nov 26, priced at $230 found 17 hours ago