Cheap Flights to Riverside County from $49

View $49 flight on Thu, Jan 8, 2026Opens in a new window

Popular airlines to Riverside County

  • Alaska Airlines

    Alaska Airlines

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • WestJet

    WestJet

  • Air Canada

    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 $49 for one-way flights and $78 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Jan 8 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$78 Roundtrip, just found
$78
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jan 8 from Seattle to Ontario, returning Sun, Jan 11, priced at $78 just found
Frontier Airlines
Thu, Jan 8 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$88 Roundtrip, just found
$88
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jan 8 from Seattle to Ontario, returning Sun, Jan 11, priced at $88 just found
Southwest Airlines
Thu, Jan 8 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$105 Roundtrip, just found
$105
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Jan 8 from Seattle to Ontario, returning Sun, Jan 11, priced at $105 just found
Southwest Airlines
Thu, Jan 8 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$110 Roundtrip, just found
$110
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Jan 8 from Seattle to Ontario, returning Sun, Jan 11, priced at $110 just found
Southwest Airlines
Thu, Jan 8 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$110 Roundtrip, just found
$110
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Jan 8 from Seattle to Ontario, returning Sun, Jan 11, priced at $110 just found
Frontier Airlines
Tue, Jan 6 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$111 Roundtrip, found 4 hours ago
$111
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, Jan 6 from Seattle to Ontario, returning Sun, Jan 11, priced at $111 found 4 hours ago
Alaska Airlines
Tue, Jan 6 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$112 Roundtrip, found 4 hours ago
$112
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Seattle to Ontario, returning Sun, Jan 11, priced at $112 found 4 hours ago
Alaska Airlines
Mon, Jan 5 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$114 Roundtrip, found 2 hours ago
$114
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Mon, Jan 5 from Seattle to Ontario, returning Sun, Jan 11, priced at $114 found 2 hours ago
Hawaiian Airlines
Mon, Jan 12 - Wed, Jan 28
PAE
Seattle
PSP
Palm Springs
$119 Roundtrip, found 9 hours ago
$119
Roundtrip
found 9 hours ago
Select Hawaiian Airlines flight, departing Mon, Jan 12 from Seattle to Palm Springs, returning Wed, Jan 28, priced at $119 found 9 hours ago
Delta
Mon, Feb 2 - Wed, Feb 11
SEA
Seattle
SNA
Orange County
$119 Roundtrip, just found
$119
Roundtrip
just found
Select Delta flight, departing Mon, Feb 2 from Seattle to Orange County, returning Wed, Feb 11, priced at $119 just found

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 $887
SNA
John Wayne
Flights from $887
Select flight to Los Angeles - Ontario Intl. ONT. Cheapest option available. Flights from $397
ONT
Los Angeles - Ontario Intl.
Cheapest
Flights from $397
Select flight to Palm Springs Intl. PSP. Flights from $520
PSP
Palm Springs Intl.
Flights from $520
Select flight to Long Beach Municipal LGB. Flights from $710
LGB
Long Beach Municipal
Flights from $710
Select flight to McClellan-Palomar CLD. Flights from $867
CLD
McClellan-Palomar
Flights from $867

Enjoy extra legroom, flight flexibility, and a seamless travel experience.

Riverside County Flights Information

Airlines serving
Frontier Airlines, Southwest Airlines, Delta, Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
from $78

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, Jan 8 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$78 Roundtrip, just found
$78
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jan 8 from Seattle to Ontario, returning Sun, Jan 11, priced at $78 just found
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