Cheap Flights to Riverside County from $34

View $34 flight on Mon, Jan 5, 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

How much is the cheapest flight to Riverside County?

Prices were available within the past 7 days and start at $34 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, found 1 hour ago
$88
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Jan 8 from Seattle to Ontario, returning Sun, Jan 11, priced at $88 found 1 hour ago
Southwest Airlines
Fri, Jan 9 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$110 Roundtrip, just found
$110
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Jan 9 from Seattle to Ontario, returning Sun, Jan 11, priced at $110 just found
Frontier Airlines
Thu, Jan 8 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$110 Roundtrip, just found
$110
Roundtrip
just found
Select Frontier 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 1 hour ago
$111
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Jan 6 from Seattle to Ontario, returning Sun, Jan 11, priced at $111 found 1 hour ago
Alaska Airlines
Tue, Jan 6 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$112 Roundtrip, found 1 hour ago
$112
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Seattle to Ontario, returning Sun, Jan 11, priced at $112 found 1 hour ago
Delta
Tue, Jan 6 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$114 Roundtrip, found 1 hour ago
$114
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Jan 6 from Seattle to Ontario, returning Sun, Jan 11, priced at $114 found 1 hour ago
Southwest Airlines
Fri, Jan 9 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
$115 Roundtrip, just found
$115
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Jan 9 from Seattle to Ontario, returning Sun, Jan 11, priced at $115 just found
Southwest Airlines
Tue, Feb 24 - Tue, Mar 3
SEA
Seattle
LGB
Long Beach
$117 Roundtrip, just found
$117
Roundtrip
just found
Select Southwest Airlines flight, departing Tue, Feb 24 from Seattle to Long Beach, returning Tue, Mar 3, priced at $117 just found
Bargain Flight
Sat, Mar 7 - Thu, Mar 12
SEA
Seattle
PSP
Palm Springs
$117 Roundtrip, just found
$117
Roundtrip
just found
Select Bargain Flight flight, departing Sat, Mar 7 from Seattle to Palm Springs, returning Thu, Mar 12, priced at $117 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. Cheapest option available. Flights from $501
SNA
John Wayne
Cheapest
Flights from $501
Select flight to Los Angeles - Ontario Intl. ONT. Flights from $662
ONT
Los Angeles - Ontario Intl.
Flights from $662
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 $795
LGB
Long Beach Municipal
Flights from $795
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, Alaska Airlines, Delta, American 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
*Available to One Key members.