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.

Wed, Aug 13 - Tue, Aug 26

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$96 Roundtrip, found 6 days ago

$96

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Aug 13 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Tue, Aug 26, priced at $96 found 6 days ago

Tue, Aug 26 - Tue, Sep 2

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$106 Roundtrip, found 6 days ago

$106

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Aug 26 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Tue, Sep 2, priced at $106 found 6 days ago

Sun, Aug 24 - Tue, Sep 2

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$127 Roundtrip, found 6 days ago

$127

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, Aug 24 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Tue, Sep 2, priced at $127 found 6 days ago

Thu, Sep 18 - Thu, Sep 25

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$131 Roundtrip, found 2 days ago

$131

Roundtrip

found 2 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 2 days ago

Wed, Sep 24 - Sat, Oct 4

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$137 Roundtrip, found 6 days ago

$137

Roundtrip

found 6 days ago

Select Hawaiian Airlines flight, departing Wed, Sep 24 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sat, Oct 4, priced at $137 found 6 days ago

Tue, Aug 26 - Wed, Sep 3

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$137 Roundtrip, found 6 days ago

$137

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Tue, Aug 26 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Wed, Sep 3, priced at $137 found 6 days ago

Tue, Aug 26 - Sat, Sep 6

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$137 Roundtrip, found 6 days ago

$137

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Aug 26 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sat, Sep 6, priced at $137 found 6 days ago

Fri, Sep 19 - Thu, Sep 25

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$140 Roundtrip, found 2 days ago

$140

Roundtrip

found 2 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 2 days ago

Thu, Sep 25 - Fri, Sep 26

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$148 Roundtrip, found 22 hours ago

$148

Roundtrip

found 22 hours 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 22 hours ago

Wed, Aug 27 - Wed, Sep 3

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$149 Roundtrip, found 2 days ago

$149

Roundtrip

found 2 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 2 days ago

Thu, Sep 18 - Sun, Sep 21

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$156 Roundtrip, found 2 days ago

$156

Roundtrip

found 2 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 2 days ago

Thu, Sep 18 - Mon, Sep 22

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$164 Roundtrip, found 22 hours ago

$164

Roundtrip

found 22 hours 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 22 hours ago

Tue, Aug 26 - Fri, Sep 5

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$167 Roundtrip, found 6 days ago

$167

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Tue, Aug 26 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Fri, Sep 5, priced at $167 found 6 days ago

Wed, Aug 27 - Mon, Sep 8

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$173 Roundtrip, found 6 days ago

$173

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Aug 27 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Mon, Sep 8, priced at $173 found 6 days ago

Wed, Aug 13 - Tue, Aug 26

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$175 Roundtrip, found 6 days ago

$175

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Aug 13 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Tue, Aug 26, priced at $175 found 6 days ago

Sat, Sep 20 - Sat, Oct 4

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$177 Roundtrip, found 2 days ago

$177

Roundtrip

found 2 days 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 2 days 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

Wed, Sep 3 - Wed, Sep 10

SNA

John Wayne

SEA

Seattle - Tacoma Intl.

$197 Roundtrip, found 3 days ago

$197

Roundtrip

found 3 days ago

Select American Airlines flight, departing Wed, Sep 3 from John Wayne to Seattle - Tacoma Intl., returning Wed, Sep 10, priced at $197 found 3 days ago

Fri, Aug 8 - Fri, Aug 8

ONT

Los Angeles - Ontario Intl.

PAE

Seattle Paine Field Intl. Airport

$228 Roundtrip, found 1 day ago

$228

Roundtrip

found 1 day 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 1 day 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