Flights from Seattle to Riverside

Cheapest flights from Seattle

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.

Wed, Jun 11 - Sat, Jun 14

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$106 Roundtrip, found 6 days ago

$106

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Jun 14, priced at $106 found 6 days ago

Thu, Jun 12 - Sat, Jun 14

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$111 Roundtrip, found 6 days ago

$111

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Jun 12 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Jun 14, priced at $111 found 6 days ago

Sat, May 31 - Tue, Jun 17

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$112 Roundtrip, found 6 days ago

$112

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, May 31 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Jun 17, priced at $112 found 6 days ago

Sun, May 25 - Mon, Jun 9

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$117 Roundtrip, found 6 days ago

$117

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, May 25 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Mon, Jun 9, priced at $117 found 6 days ago

Wed, Jun 11 - Sun, Jun 15

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$121 Roundtrip, found 6 days ago

$121

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sun, Jun 15, priced at $121 found 6 days ago

Thu, Jun 12 - Sun, Jun 15

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$126 Roundtrip, found 6 days ago

$126

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Jun 12 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sun, Jun 15, priced at $126 found 6 days ago

Sat, May 31 - Sun, Jun 15

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$127 Roundtrip, found 6 days ago

$127

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, May 31 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sun, Jun 15, priced at $127 found 6 days ago

Wed, Jun 11 - Wed, Jun 18

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$134 Roundtrip, found 6 days ago

$134

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Wed, Jun 18, priced at $134 found 6 days ago

Thu, Jun 12 - Wed, Jun 18

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$139 Roundtrip, found 6 days ago

$139

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Jun 12 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Wed, Jun 18, priced at $139 found 6 days ago

Sat, Jun 14 - Tue, Jun 17

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$140 Roundtrip, found 6 days ago

$140

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Jun 14 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Jun 17, priced at $140 found 6 days ago

Wed, Jun 11 - Thu, Jun 19

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$144 Roundtrip, found 6 days ago

$144

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Thu, Jun 19, priced at $144 found 6 days ago

Thu, Jun 12 - Sat, Jun 21

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$145 Roundtrip, found 6 days ago

$145

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Jun 12 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Jun 21, priced at $145 found 6 days ago

Wed, Jun 11 - Mon, Jun 23

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$146 Roundtrip, found 6 days ago

$146

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Mon, Jun 23, priced at $146 found 6 days ago

Tue, Aug 12 - Tue, Aug 12

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$172 Roundtrip, found 1 day ago

$172

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Tue, Aug 12 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 12, priced at $172 found 1 day ago

Sat, Aug 16 - Sat, Aug 16

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$172 Roundtrip, found 1 day ago

$172

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Sat, Aug 16 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Aug 16, priced at $172 found 1 day ago

Sat, Jun 14 - Sat, Jun 14

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$172 Roundtrip, found 6 days ago

$172

Roundtrip

found 6 days ago

Select Delta flight, departing Sat, Jun 14 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Jun 14, priced at $172 found 6 days ago

Thu, Aug 21 - Tue, Aug 26

SEA

Seattle - Tacoma Intl.

SNA

John Wayne

$172 Roundtrip, found 8 hours ago

$172

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Thu, Aug 21 from Seattle - Tacoma Intl. to John Wayne, returning Tue, Aug 26, priced at $172 found 8 hours ago

Thu, Oct 9 - Wed, Oct 15

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$177 Roundtrip, found 5 days ago

$177

Roundtrip

found 5 days ago

Select United flight, departing Thu, Oct 9 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Wed, Oct 15, priced at $177 found 5 days ago

Wed, Jul 2 - Thu, Jul 10

SEA

Seattle - Tacoma Intl.

LGB

Long Beach Municipal

$193 Roundtrip, found 4 days ago

$193

Roundtrip

found 4 days ago

Select Delta flight, departing Wed, Jul 2 from Seattle - Tacoma Intl. to Long Beach Municipal, returning Thu, Jul 10, priced at $193 found 4 days ago

Fri, Jul 18 - Fri, Jul 25

PAE

Seattle Paine Field Intl. Airport

SNA

John Wayne

$326 Roundtrip, found 5 days ago

$326

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Fri, Jul 18 from Seattle Paine Field Intl. Airport to John Wayne, returning Fri, Jul 25, priced at $326 found 5 days ago