Flights from Riverside to Seattle

Cheapest flights from Riverside

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, Sep 18 - Thu, Sep 25

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$131 Roundtrip, found 3 days ago

$131

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Sep 18 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Thu, Sep 25, priced at $131 found 3 days ago

Fri, Sep 19 - Thu, Sep 25

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$140 Roundtrip, found 3 days ago

$140

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Sep 19 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Thu, Sep 25, priced at $140 found 3 days ago

Thu, Sep 25 - Fri, Sep 26

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$148 Roundtrip, found 1 day ago

$148

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 25 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Fri, Sep 26, priced at $148 found 1 day ago

Wed, Aug 27 - Wed, Sep 3

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$149 Roundtrip, found 3 days ago

$149

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Aug 27 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Wed, Sep 3, priced at $149 found 3 days ago

Thu, Sep 18 - Sun, Sep 21

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$156 Roundtrip, found 3 days ago

$156

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Sep 18 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sun, Sep 21, priced at $156 found 3 days ago

Sat, Sep 20 - Sat, Oct 4

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$157 Roundtrip, found 21 hours ago

$157

Roundtrip

found 21 hours ago

Select Alaska Airlines flight, departing Sat, Sep 20 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sat, Oct 4, priced at $157 found 21 hours ago

Thu, Sep 18 - Mon, Sep 22

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$164 Roundtrip, found 1 day ago

$164

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 18 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Mon, Sep 22, priced at $164 found 1 day ago

Sat, Sep 20 - Sat, Oct 4

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$176 Roundtrip, found 21 hours ago

$176

Roundtrip

found 21 hours ago

Select Alaska Airlines flight, departing Sat, Sep 20 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sat, Oct 4, priced at $176 found 21 hours ago

Sat, Sep 20 - Sat, Oct 4

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$177 Roundtrip, found 21 hours ago

$177

Roundtrip

found 21 hours ago

Select United flight, departing Sat, Sep 20 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sat, Oct 4, priced at $177 found 21 hours ago

Sat, Sep 20 - Sat, Oct 4

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$177 Roundtrip, found 21 hours ago

$177

Roundtrip

found 21 hours ago

Select American Airlines flight, departing Sat, Sep 20 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sat, Oct 4, priced at $177 found 21 hours ago

Sat, Sep 6 - Tue, Sep 9

SNA

John Wayne

SEA

Seattle - Tacoma Intl.

$177 Roundtrip, found 3 days ago

$177

Roundtrip

found 3 days ago

Select Hawaiian Airlines flight, departing Sat, Sep 6 from John Wayne to Seattle - Tacoma Intl., returning Tue, Sep 9, priced at $177 found 3 days ago

Thu, Sep 18 - Mon, Sep 22

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$186 Roundtrip, found 3 days ago

$186

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Sep 18 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Mon, Sep 22, priced at $186 found 3 days ago

Sat, Sep 20 - Sat, Oct 4

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$187 Roundtrip, found 21 hours ago

$187

Roundtrip

found 21 hours ago

Select Alaska Airlines flight, departing Sat, Sep 20 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sat, Oct 4, priced at $187 found 21 hours ago

Sat, Sep 20 - Sat, Oct 4

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$187 Roundtrip, found 21 hours ago

$187

Roundtrip

found 21 hours ago

Select Alaska Airlines flight, departing Sat, Sep 20 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sat, Oct 4, priced at $187 found 21 hours ago

Thu, Sep 25 - Mon, Sep 29

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$194 Roundtrip, found 1 day ago

$194

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 25 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Mon, Sep 29, priced at $194 found 1 day ago

Sat, Sep 20 - Sat, Oct 4

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$197 Roundtrip, found 21 hours ago

$197

Roundtrip

found 21 hours ago

Select American Airlines flight, departing Sat, Sep 20 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sat, Oct 4, priced at $197 found 21 hours ago

Sun, Aug 31 - Tue, Sep 9

SNA

John Wayne

SEA

Seattle - Tacoma Intl.

$197 Roundtrip, found 3 days ago

$197

Roundtrip

found 3 days ago

Select Alaska Airlines flight, departing Sun, Aug 31 from John Wayne to Seattle - Tacoma Intl., returning Tue, Sep 9, priced at $197 found 3 days ago

Wed, Aug 27 - Wed, Sep 3

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$217 Roundtrip, found 3 days ago

$217

Roundtrip

found 3 days ago

Select Delta flight, departing Wed, Aug 27 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Wed, Sep 3, priced at $217 found 3 days ago

Fri, Aug 8 - Fri, Aug 8

ONT

Los Angeles - Ontario Intl.

PAE

Seattle Paine Field Intl. Airport

$228 Roundtrip, found 2 days ago

$228

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Los Angeles - Ontario Intl. to Seattle Paine Field Intl. Airport, returning Fri, Aug 8, priced at $228 found 2 days ago

Wed, Sep 3 - Wed, Sep 10

SNA

John Wayne

PAE

Seattle Paine Field Intl. Airport

$256 Roundtrip, found 3 days ago

$256

Roundtrip

found 3 days ago

Select Alaska Airlines flight, departing Wed, Sep 3 from John Wayne to Seattle Paine Field Intl. Airport, returning Wed, Sep 10, priced at $256 found 3 days ago