Flights from Seattle to Rialto

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.

Sat, Aug 23 - Tue, Aug 26

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$139 Roundtrip, found 11 hours ago

$139

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Sat, Aug 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 26, priced at $139 found 11 hours ago

Thu, Jul 31 - Tue, Aug 5

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$143 Roundtrip, found 4 days ago

$143

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Thu, Jul 31 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 5, priced at $143 found 4 days ago

Sat, Aug 2 - Tue, Aug 5

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$154 Roundtrip, found 4 days ago

$154

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Sat, Aug 2 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 5, priced at $154 found 4 days ago

Wed, Jul 23 - Tue, Jul 29

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$155 Roundtrip, found 4 hours ago

$155

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Wed, Jul 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Jul 29, priced at $155 found 4 hours ago

Tue, Jul 29 - Tue, Aug 5

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$157 Roundtrip, found 4 days ago

$157

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Tue, Jul 29 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 5, priced at $157 found 4 days ago

Mon, Sep 15 - Mon, Sep 22

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$159 Roundtrip, found 1 day ago

$159

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Sep 15 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Mon, Sep 22, priced at $159 found 1 day ago

Sat, Aug 23 - Tue, Aug 26

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$163 Roundtrip, found 11 hours ago

$163

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Sat, Aug 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 26, priced at $163 found 11 hours ago

Tue, Jul 22 - Tue, Jul 29

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$165 Roundtrip, found 4 hours ago

$165

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Tue, Jul 22 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Jul 29, priced at $165 found 4 hours ago

Sat, Aug 23 - Tue, Aug 26

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$167 Roundtrip, found 11 hours ago

$167

Roundtrip

found 11 hours ago

Select Alaska Airlines flight, departing Sat, Aug 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 26, priced at $167 found 11 hours ago

Sat, Aug 23 - Tue, Aug 26

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$167 Roundtrip, found 11 hours ago

$167

Roundtrip

found 11 hours ago

Select Delta flight, departing Sat, Aug 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 26, priced at $167 found 11 hours ago

Sun, Sep 14 - Fri, Sep 19

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$169 Roundtrip, found 1 day ago

$169

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Sep 14 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Fri, Sep 19, priced at $169 found 1 day ago

Sat, Aug 23 - Tue, Aug 26

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$172 Roundtrip, found 11 hours ago

$172

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Sat, Aug 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 26, priced at $172 found 11 hours ago

Sat, Aug 23 - Tue, Aug 26

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$174 Roundtrip, found 11 hours ago

$174

Roundtrip

found 11 hours ago

Select Alaska Airlines flight, departing Sat, Aug 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 26, priced at $174 found 11 hours ago

Sat, Jul 26 - Tue, Jul 29

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$175 Roundtrip, found 4 hours ago

$175

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Sat, Jul 26 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Jul 29, priced at $175 found 4 hours ago

Sat, Aug 23 - Tue, Aug 26

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$177 Roundtrip, found 11 hours ago

$177

Roundtrip

found 11 hours ago

Select United flight, departing Sat, Aug 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Tue, Aug 26, priced at $177 found 11 hours ago

Sat, Sep 13 - Sat, Sep 20

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$177 Roundtrip, found 1 day ago

$177

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Sat, Sep 13 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Sep 20, priced at $177 found 1 day ago

Tue, Sep 16 - Mon, Sep 22

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$178 Roundtrip, found 1 day ago

$178

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Sep 16 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Mon, Sep 22, priced at $178 found 1 day ago

Sat, Aug 2 - Mon, Aug 4

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$183 Roundtrip, found 4 days ago

$183

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Sat, Aug 2 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Mon, Aug 4, priced at $183 found 4 days ago

Fri, Sep 12 - Thu, Sep 18

SEA

Seattle - Tacoma Intl.

ONT

Los Angeles - Ontario Intl.

$207 Roundtrip, found 1 day ago

$207

Roundtrip

found 1 day ago

Select American Airlines flight, departing Fri, Sep 12 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Thu, Sep 18, priced at $207 found 1 day ago

Fri, Sep 12 - Thu, Sep 18

PAE

Seattle Paine Field Intl. Airport

ONT

Los Angeles - Ontario Intl.

$306 Roundtrip, found 1 day ago

$306

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Sep 12 from Seattle Paine Field Intl. Airport to Los Angeles - Ontario Intl., returning Thu, Sep 18, priced at $306 found 1 day ago