Cheap Flights to Riverside County from $33

View $33 flight on Mon, Jun 1, 2026Opens in a new window

Popular airlines to Riverside County

  • Alaska Airlines

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • WestJet

  • Air Canada

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How much is the cheapest flight to Riverside County?

Prices were available within the past 7 days and start at $33 for one-way flights and $66 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Jun 4 - Fri, Jun 5
SEA
Seattle
ONT
Ontario
$66 Roundtrip, just found
$66
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jun 4 from Seattle to Ontario, returning Fri, Jun 5, priced at $66 just found
Alaska Airlines
Thu, May 28 - Wed, Jun 3
SEA
Seattle
ONT
Ontario
$137 Roundtrip, found 11 hours ago
$137
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Thu, May 28 from Seattle to Ontario, returning Wed, Jun 3, priced at $137 found 11 hours ago
Southwest Airlines
Sat, Jun 27 - Mon, Jun 29
SEA
Seattle
ONT
Ontario
$152 Roundtrip, found 5 hours ago
$152
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Sat, Jun 27 from Seattle to Ontario, returning Mon, Jun 29, priced at $152 found 5 hours ago
American Airlines
Sat, Oct 17 - Sat, Oct 24
SEA
Seattle
CLD
Carlsbad
$159 Roundtrip, found 14 hours ago
$159
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Sat, Oct 17 from Seattle to Carlsbad, returning Sat, Oct 24, priced at $159 found 14 hours ago
United
Sat, Oct 31 - Thu, Nov 5
SEA
Seattle
CLD
Carlsbad
$183 Roundtrip, found 12 hours ago
$183
Roundtrip
found 12 hours ago
Select United flight, departing Sat, Oct 31 from Seattle to Carlsbad, returning Thu, Nov 5, priced at $183 found 12 hours ago
Bargain Flight
Sat, Jun 13 - Tue, Jun 16
SEA
Seattle
SNA
Orange County
$196 Roundtrip, found 12 hours ago
$196
Roundtrip
found 12 hours ago
Select Bargain Flight flight, departing Sat, Jun 13 from Seattle to Orange County, returning Tue, Jun 16, priced at $196 found 12 hours ago
Southwest Airlines
Wed, Oct 21 - Mon, Oct 26
SEA
Seattle
LGB
Long Beach
$201 Roundtrip, found 2 hours ago
$201
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Wed, Oct 21 from Seattle to Long Beach, returning Mon, Oct 26, priced at $201 found 2 hours ago
Delta
Wed, May 27 - Thu, May 28
SEA
Seattle
ONT
Ontario
$202 Roundtrip, just found
$202
Roundtrip
just found
Select Delta flight, departing Wed, May 27 from Seattle to Ontario, returning Thu, May 28, priced at $202 just found
Alaska Airlines
Sat, May 30 - Fri, Jun 5
SEA
Seattle
PSP
Palm Springs
$207 Roundtrip, found 10 hours ago
$207
Roundtrip
found 10 hours ago
Select Alaska Airlines flight, departing Sat, May 30 from Seattle to Palm Springs, returning Fri, Jun 5, priced at $207 found 10 hours ago
Alaska Airlines
Tue, Jun 2 - Tue, Jun 2
PAE
Seattle
SNA
Orange County
$230 Roundtrip, found 3 days ago
$230
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Jun 2 from Seattle to Orange County, returning Tue, Jun 2, priced at $230 found 3 days ago

Airports in Riverside County

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John Wayne SNA. Flights from $421
SNA
John Wayne
Flights from $421
Select flight to Los Angeles - Ontario Intl. ONT. Flights from $537
ONT
Los Angeles - Ontario Intl.
Flights from $537
Select flight to Long Beach Municipal LGB. Flights from $392
LGB
Long Beach Municipal
Flights from $392
Select flight to Palm Springs Intl. PSP. Flights from $483
PSP
Palm Springs Intl.
Flights from $483
Select flight to McClellan-Palomar CLD. Cheapest option available. Flights from $287
CLD
McClellan-Palomar
Cheapest
Flights from $287

Trending flights to Riverside County

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.

Frontier Airlines
Thu, Jun 4 - Fri, Jun 5
SEA
Seattle
ONT
Ontario
$66 Roundtrip, just found
$66
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jun 4 from Seattle to Ontario, returning Fri, Jun 5, priced at $66 just found

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Travel information

*Flight schedules are subject to change.

*Available to One Key members.

 

*Flight schedules are subject to change.

*Available to One Key members.

 

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