Flights from Portland to Diamond Bar

Cheapest flights from Portland

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 23 - Sat, Oct 25

PDX

Portland Intl.

LAX

Los Angeles Intl.

$92 Roundtrip, found 1 day ago

$92

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Oct 23 from Portland Intl. to Los Angeles Intl., returning Sat, Oct 25, priced at $92 found 1 day ago

Thu, Oct 23 - Sun, Oct 26

PDX

Portland Intl.

LAX

Los Angeles Intl.

$93 Roundtrip, found 1 day ago

$93

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Oct 23 from Portland Intl. to Los Angeles Intl., returning Sun, Oct 26, priced at $93 found 1 day ago

Mon, Oct 20 - Fri, Oct 24

PDX

Portland Intl.

ONT

Los Angeles - Ontario Intl.

$94 Roundtrip, found 1 day ago

$94

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Oct 20 from Portland Intl. to Los Angeles - Ontario Intl., returning Fri, Oct 24, priced at $94 found 1 day ago

Thu, Nov 6 - Thu, Nov 13

PDX

Portland Intl.

LAX

Los Angeles Intl.

$107 Roundtrip, found 20 hours ago

$107

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Thu, Nov 6 from Portland Intl. to Los Angeles Intl., returning Thu, Nov 13, priced at $107 found 20 hours ago

Mon, Oct 20 - Sun, Nov 2

PDX

Portland Intl.

ONT

Los Angeles - Ontario Intl.

$114 Roundtrip, found 1 day ago

$114

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Oct 20 from Portland Intl. to Los Angeles - Ontario Intl., returning Sun, Nov 2, priced at $114 found 1 day ago

Tue, Aug 12 - Sat, Aug 16

PDX

Portland Intl.

ONT

Los Angeles - Ontario Intl.

$116 Roundtrip, found 5 days ago

$116

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from Portland Intl. to Los Angeles - Ontario Intl., returning Sat, Aug 16, priced at $116 found 5 days ago

Thu, Nov 6 - Fri, Nov 14

PDX

Portland Intl.

LAX

Los Angeles Intl.

$123 Roundtrip, found 20 hours ago

$123

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Thu, Nov 6 from Portland Intl. to Los Angeles Intl., returning Fri, Nov 14, priced at $123 found 20 hours ago

Fri, Aug 8 - Thu, Aug 21

PDX

Portland Intl.

LAX

Los Angeles Intl.

$125 Roundtrip, found 5 days ago

$125

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Portland Intl. to Los Angeles Intl., returning Thu, Aug 21, priced at $125 found 5 days ago

Tue, Aug 12 - Sun, Aug 17

PDX

Portland Intl.

ONT

Los Angeles - Ontario Intl.

$125 Roundtrip, found 5 days ago

$125

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from Portland Intl. to Los Angeles - Ontario Intl., returning Sun, Aug 17, priced at $125 found 5 days ago

Thu, Oct 2 - Sat, Oct 4

PDX

Portland Intl.

LAX

Los Angeles Intl.

$128 Roundtrip, found 5 days ago

$128

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Oct 2 from Portland Intl. to Los Angeles Intl., returning Sat, Oct 4, priced at $128 found 5 days ago

Thu, Oct 23 - Mon, Oct 27

PDX

Portland Intl.

LAX

Los Angeles Intl.

$130 Roundtrip, found 1 day ago

$130

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Oct 23 from Portland Intl. to Los Angeles Intl., returning Mon, Oct 27, priced at $130 found 1 day ago

Fri, Oct 24 - Fri, Oct 31

PDX

Portland Intl.

LAX

Los Angeles Intl.

$134 Roundtrip, found 3 days ago

$134

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Oct 24 from Portland Intl. to Los Angeles Intl., returning Fri, Oct 31, priced at $134 found 3 days ago

Mon, Sep 29 - Sat, Oct 4

PDX

Portland Intl.

LAX

Los Angeles Intl.

$135 Roundtrip, found 5 days ago

$135

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Sep 29 from Portland Intl. to Los Angeles Intl., returning Sat, Oct 4, priced at $135 found 5 days ago

Sun, Nov 9 - Thu, Nov 13

PDX

Portland Intl.

LAX

Los Angeles Intl.

$137 Roundtrip, found 20 hours ago

$137

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Sun, Nov 9 from Portland Intl. to Los Angeles Intl., returning Thu, Nov 13, priced at $137 found 20 hours ago

Tue, Oct 21 - Tue, Oct 28

PDX

Portland Intl.

LAX

Los Angeles Intl.

$137 Roundtrip, found 3 days ago

$137

Roundtrip

found 3 days ago

Select Hawaiian Airlines flight, departing Tue, Oct 21 from Portland Intl. to Los Angeles Intl., returning Tue, Oct 28, priced at $137 found 3 days ago

Tue, Aug 12 - Tue, Aug 19

PDX

Portland Intl.

ONT

Los Angeles - Ontario Intl.

$137 Roundtrip, found 6 days ago

$137

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Tue, Aug 12 from Portland Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 19, priced at $137 found 6 days ago

Wed, Oct 22 - Tue, Oct 28

PDX

Portland Intl.

SNA

John Wayne

$151 Roundtrip, found 21 hours ago

$151

Roundtrip

found 21 hours ago

Select Spirit Airlines flight, departing Wed, Oct 22 from Portland Intl. to John Wayne, returning Tue, Oct 28, priced at $151 found 21 hours ago

Sat, Aug 23 - Sat, Aug 23

PDX

Portland Intl.

ONT

Los Angeles - Ontario Intl.

$157 Roundtrip, found 5 days ago

$157

Roundtrip

found 5 days ago

Select Delta flight, departing Sat, Aug 23 from Portland Intl. to Los Angeles - Ontario Intl., returning Sat, Aug 23, priced at $157 found 5 days ago

Thu, Aug 14 - Tue, Aug 19

PDX

Portland Intl.

LAX

Los Angeles Intl.

$157 Roundtrip, found 5 days ago

$157

Roundtrip

found 5 days ago

Select American Airlines flight, departing Thu, Aug 14 from Portland Intl. to Los Angeles Intl., returning Tue, Aug 19, priced at $157 found 5 days ago

Wed, Aug 20 - Sun, Aug 31

PDX

Portland Intl.

LAX

Los Angeles Intl.

$193 Roundtrip, found 2 days ago

$193

Roundtrip

found 2 days ago

Select United flight, departing Wed, Aug 20 from Portland Intl. to Los Angeles Intl., returning Sun, Aug 31, priced at $193 found 2 days ago