Flights from Riverside

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, Jul 15 - Tue, Jul 28

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$66 Roundtrip, found 2 days ago

$66

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jul 15 from Ontario Intl. Airport to Denver Intl., returning Tue, Jul 28, priced at $66 found 2 days ago

Mon, Jun 1 - Tue, Jun 16

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$82 Roundtrip, found 2 days ago

$82

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Ontario Intl. Airport to Denver Intl., returning Tue, Jun 16, priced at $82 found 2 days ago

Tue, Jun 9 - Tue, Jun 23

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$84 Roundtrip, found 6 days ago

$84

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Jun 9 from Ontario Intl. Airport to Denver Intl., returning Tue, Jun 23, priced at $84 found 6 days ago

Wed, Jun 24 - Tue, Jul 7

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$98 Roundtrip, found 2 days ago

$98

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jun 24 from Ontario Intl. Airport to Denver Intl., returning Tue, Jul 7, priced at $98 found 2 days ago

Tue, Jul 14 - Tue, Jul 28

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$102 Roundtrip, found 2 days ago

$102

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Jul 14 from Ontario Intl. Airport to Denver Intl., returning Tue, Jul 28, priced at $102 found 2 days ago

Mon, May 25 - Tue, Jun 9

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$157 Roundtrip, found 6 days ago

$157

Roundtrip

found 6 days ago

Select Southwest Airlines flight, departing Mon, May 25 from Ontario Intl. Airport to Denver Intl., returning Tue, Jun 9, priced at $157 found 6 days ago

Mon, May 25 - Tue, Jun 9

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$187 Roundtrip, found 6 days ago

$187

Roundtrip

found 6 days ago

Select United flight, departing Mon, May 25 from Ontario Intl. Airport to Denver Intl., returning Tue, Jun 9, priced at $187 found 6 days ago

Mon, May 25 - Tue, Jun 9

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$197 Roundtrip, found 6 days ago

$197

Roundtrip

found 6 days ago

Select Delta flight, departing Mon, May 25 from Ontario Intl. Airport to Denver Intl., returning Tue, Jun 9, priced at $197 found 6 days ago

Tue, Jun 9 - Tue, Jun 9

ONT

Ontario Intl. Airport

DFW

Dallas-Fort Worth Intl.

$210 Roundtrip, found 6 days ago

$210

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Jun 9 from Ontario Intl. Airport to Dallas-Fort Worth Intl., returning Tue, Jun 9, priced at $210 found 6 days ago

Mon, Jun 1 - Sun, Jun 7

ONT

Ontario Intl. Airport

PDX

Portland Intl.

$217 Roundtrip, found 4 days ago

$217

Roundtrip

found 4 days ago

Select Alaska Airlines flight, departing Mon, Jun 1 from Ontario Intl. Airport to Portland Intl., returning Sun, Jun 7, priced at $217 found 4 days ago

Wed, Jun 3 - Sat, Jun 6

PSP

Palm Springs Intl.

PDX

Portland Intl.

$227 Roundtrip, found 9 hours ago

$227

Roundtrip

found 9 hours ago

Select Alaska Airlines flight, departing Wed, Jun 3 from Palm Springs Intl. to Portland Intl., returning Sat, Jun 6, priced at $227 found 9 hours ago

Sat, May 30 - Sat, Jun 6

ONT

Ontario Intl. Airport

SAT

San Antonio Intl.

$228 Roundtrip, found 4 hours ago

$228

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Sat, May 30 from Ontario Intl. Airport to San Antonio Intl., returning Sat, Jun 6, priced at $228 found 4 hours ago

Mon, May 25 - Tue, Jun 9

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$237 Roundtrip, found 6 days ago

$237

Roundtrip

found 6 days ago

Select American Airlines flight, departing Mon, May 25 from Ontario Intl. Airport to Denver Intl., returning Tue, Jun 9, priced at $237 found 6 days ago

Thu, Jul 2 - Sun, Jul 5

SNA

John Wayne

DEN

Denver Intl.

$260 Roundtrip, found 5 days ago

$260

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Jul 2 from John Wayne to Denver Intl., returning Sun, Jul 5, priced at $260 found 5 days ago

Tue, Jul 7 - Tue, Jul 21

ONT

Ontario Intl. Airport

MCO

Orlando Intl.

$260 Roundtrip, found 1 day ago

$260

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jul 7 from Ontario Intl. Airport to Orlando Intl., returning Tue, Jul 21, priced at $260 found 1 day ago

Tue, May 12 - Wed, May 13

ONT

Ontario Intl. Airport

AUS

Austin-Bergstrom Intl.

$262 Roundtrip, found 5 days ago

$262

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, May 12 from Ontario Intl. Airport to Austin-Bergstrom Intl., returning Wed, May 13, priced at $262 found 5 days ago

Thu, May 28 - Tue, Jun 2

LGB

Long Beach Municipal

SAT

San Antonio Intl.

$386 Roundtrip, found 5 hours ago

$386

Roundtrip

found 5 hours ago

Select Delta flight, departing Thu, May 28 from Long Beach Municipal to San Antonio Intl., returning Tue, Jun 2, priced at $386 found 5 hours ago

Mon, Jun 1 - Sat, Jun 6

SNA

John Wayne

SAT

San Antonio Intl.

$405 Roundtrip, found 5 hours ago

$405

Roundtrip

found 5 hours ago

Select American Airlines flight, departing Mon, Jun 1 from John Wayne to San Antonio Intl., returning Sat, Jun 6, priced at $405 found 5 hours ago

Wed, Jul 8 - Tue, Jul 14

LGB

Long Beach Municipal

MCO

Orlando Intl.

$429 Roundtrip, found 18 hours ago

$429

Roundtrip

found 18 hours ago

Select Delta flight, departing Wed, Jul 8 from Long Beach Municipal to Orlando Intl., returning Tue, Jul 14, priced at $429 found 18 hours ago

Fri, Jun 12 - Sun, Jun 14

ONT

Ontario Intl. Airport

DAL

Love Field

$460 Roundtrip, found 5 days ago

$460

Roundtrip

found 5 days ago

Select Southwest Airlines flight, departing Fri, Jun 12 from Ontario Intl. Airport to Love Field, returning Sun, Jun 14, priced at $460 found 5 days ago