Flights from Ontario

Cheapest flights from Ontario

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, Feb 4 - Mon, Feb 9

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$68 Roundtrip, found 1 day ago

$68

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Feb 4 from Los Angeles - Ontario Intl. to Denver Intl., returning Mon, Feb 9, priced at $68 found 1 day ago

Thu, Dec 11 - Fri, Dec 12

ONT

Los Angeles - Ontario Intl.

DFW

Dallas-Fort Worth Intl.

$68 Roundtrip, found 1 day ago

$68

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Dec 11 from Los Angeles - Ontario Intl. to Dallas-Fort Worth Intl., returning Fri, Dec 12, priced at $68 found 1 day ago

Mon, Nov 24 - Wed, Nov 26

SNA

John Wayne

LAS

Harry Reid Intl.

$68 Roundtrip, found 5 days ago

$68

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Nov 24 from John Wayne to Harry Reid Intl., returning Wed, Nov 26, priced at $68 found 5 days ago

Mon, Nov 17 - Thu, Nov 20

SNA

John Wayne

LAS

Harry Reid Intl.

$70 Roundtrip, found 6 days ago

$70

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Mon, Nov 17 from John Wayne to Harry Reid Intl., returning Thu, Nov 20, priced at $70 found 6 days ago

Sat, Nov 29 - Thu, Dec 4

SNA

John Wayne

LAS

Harry Reid Intl.

$72 Roundtrip, found 5 days ago

$72

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Nov 29 from John Wayne to Harry Reid Intl., returning Thu, Dec 4, priced at $72 found 5 days ago

Thu, Dec 11 - Tue, Dec 16

ONT

Los Angeles - Ontario Intl.

DFW

Dallas-Fort Worth Intl.

$73 Roundtrip, found 1 day ago

$73

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Dec 11 from Los Angeles - Ontario Intl. to Dallas-Fort Worth Intl., returning Tue, Dec 16, priced at $73 found 1 day ago

Mon, Nov 24 - Sat, Dec 6

SNA

John Wayne

LAS

Harry Reid Intl.

$76 Roundtrip, found 5 days ago

$76

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Mon, Nov 24 from John Wayne to Harry Reid Intl., returning Sat, Dec 6, priced at $76 found 5 days ago

Mon, Nov 3 - Thu, Nov 6

SNA

John Wayne

LAS

Harry Reid Intl.

$78 Roundtrip, found 1 day ago

$78

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Nov 3 from John Wayne to Harry Reid Intl., returning Thu, Nov 6, priced at $78 found 1 day ago

Thu, Jan 8 - Sun, Jan 11

SNA

John Wayne

DEN

Denver Intl.

$82 Roundtrip, found 5 days ago

$82

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Jan 8 from John Wayne to Denver Intl., returning Sun, Jan 11, priced at $82 found 5 days ago

Thu, Dec 4 - Thu, Dec 11

ONT

Los Angeles - Ontario Intl.

SFO

San Francisco Intl.

$83 Roundtrip, found 6 days ago

$83

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Dec 4 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Thu, Dec 11, priced at $83 found 6 days ago

Thu, Dec 4 - Sun, Dec 7

SNA

John Wayne

SFO

San Francisco Intl.

$88 Roundtrip, found 2 days ago

$88

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Dec 4 from John Wayne to San Francisco Intl., returning Sun, Dec 7, priced at $88 found 2 days ago

Fri, Dec 19 - Sat, Jan 3

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$94 Roundtrip, found 3 days ago

$94

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Dec 19 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sat, Jan 3, priced at $94 found 3 days ago

Mon, Nov 10 - Thu, Nov 13

SNA

John Wayne

PHX

Sky Harbor Intl.

$99 Roundtrip, found 1 hour ago

$99

Roundtrip

found 1 hour ago

Select Frontier Airlines flight, departing Mon, Nov 10 from John Wayne to Sky Harbor Intl., returning Thu, Nov 13, priced at $99 found 1 hour ago

Thu, Nov 27 - Fri, Nov 28

SNA

John Wayne

LAS

Harry Reid Intl.

$117 Roundtrip, found 5 days ago

$117

Roundtrip

found 5 days ago

Select Delta flight, departing Thu, Nov 27 from John Wayne to Harry Reid Intl., returning Fri, Nov 28, priced at $117 found 5 days ago

Sat, Nov 15 - Mon, Nov 17

ONT

Los Angeles - Ontario Intl.

SFO

San Francisco Intl.

$137 Roundtrip, found 10 hours ago

$137

Roundtrip

found 10 hours ago

Select United flight, departing Sat, Nov 15 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Mon, Nov 17, priced at $137 found 10 hours ago

Fri, Nov 14 - Tue, Nov 18

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$139 Roundtrip, found 5 days ago

$139

Roundtrip

found 5 days ago

Select Hawaiian Airlines flight, departing Fri, Nov 14 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Tue, Nov 18, priced at $139 found 5 days ago

Fri, Jan 2 - Tue, Jan 13

SNA

John Wayne

SFO

San Francisco Intl.

$167 Roundtrip, found 5 days ago

$167

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Fri, Jan 2 from John Wayne to San Francisco Intl., returning Tue, Jan 13, priced at $167 found 5 days ago

Thu, Dec 25 - Wed, Jan 7

SNA

John Wayne

SEA

Seattle - Tacoma Intl.

$207 Roundtrip, found 6 days ago

$207

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Thu, Dec 25 from John Wayne to Seattle - Tacoma Intl., returning Wed, Jan 7, priced at $207 found 6 days ago

Thu, Oct 30 - Thu, Nov 6

ONT

Los Angeles - Ontario Intl.

PAE

Seattle Paine Field Intl. Airport

$212 Roundtrip, found 3 days ago

$212

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Oct 30 from Los Angeles - Ontario Intl. to Seattle Paine Field Intl. Airport, returning Thu, Nov 6, priced at $212 found 3 days ago

Wed, Nov 12 - Sat, Nov 15

ONT

Los Angeles - Ontario Intl.

DAL

Love Field

$217 Roundtrip, found 6 days ago

$217

Roundtrip

found 6 days ago

Select Delta flight, departing Wed, Nov 12 from Los Angeles - Ontario Intl. to Love Field, returning Sat, Nov 15, priced at $217 found 6 days ago