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.

Tue, Jun 16 - Tue, Jun 16

ONT

Ontario Intl. Airport

LAS

Harry Reid Intl.

$61 Roundtrip, found 19 hours ago

$61

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Tue, Jun 16 from Ontario Intl. Airport to Harry Reid Intl., returning Tue, Jun 16, priced at $61 found 19 hours ago

Tue, Aug 25 - Tue, Aug 25

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$66 Roundtrip, found 3 days ago

$66

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Tue, Aug 25 from Ontario Intl. Airport to Denver Intl., returning Tue, Aug 25, priced at $66 found 3 days ago

Mon, Jun 1 - Thu, Jun 18

SNA

John Wayne

LAS

Harry Reid Intl.

$66 Roundtrip, found 5 days ago

$66

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Jun 1 from John Wayne to Harry Reid Intl., returning Thu, Jun 18, priced at $66 found 5 days ago

Tue, Jun 9 - Wed, Jun 17

ONT

Ontario Intl. Airport

SFO

San Francisco Intl.

$81 Roundtrip, found 1 day ago

$81

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 9 from Ontario Intl. Airport to San Francisco Intl., returning Wed, Jun 17, priced at $81 found 1 day ago

Thu, May 28 - Fri, May 29

SNA

John Wayne

PHX

Sky Harbor Intl.

$118 Roundtrip, found 3 days ago

$118

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, May 28 from John Wayne to Sky Harbor Intl., returning Fri, May 29, priced at $118 found 3 days ago

Tue, Jun 9 - Tue, Jun 16

ONT

Ontario Intl. Airport

SEA

Seattle - Tacoma Intl.

$154 Roundtrip, found 2 days ago

$154

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Jun 9 from Ontario Intl. Airport to Seattle - Tacoma Intl., returning Tue, Jun 16, priced at $154 found 2 days ago

Sat, Sep 19 - Sat, Sep 26

LGB

Long Beach Municipal

SEA

Seattle - Tacoma Intl.

$177 Roundtrip, found 5 days ago

$177

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Sat, Sep 19 from Long Beach Municipal to Seattle - Tacoma Intl., returning Sat, Sep 26, priced at $177 found 5 days ago

Tue, Jun 23 - Wed, Jun 24

ONT

Ontario Intl. Airport

PHX

Sky Harbor Intl.

$200 Roundtrip, found 4 days ago

$200

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Tue, Jun 23 from Ontario Intl. Airport to Sky Harbor Intl., returning Wed, Jun 24, priced at $200 found 4 days ago

Tue, Jun 9 - Tue, Jun 16

LGB

Long Beach Municipal

DEN

Denver Intl.

$211 Roundtrip, found 1 day ago

$211

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Jun 9 from Long Beach Municipal to Denver Intl., returning Tue, Jun 16, priced at $211 found 1 day ago

Mon, Jun 15 - Mon, Jun 15

SNA

John Wayne

SFO

San Francisco Intl.

$215 Roundtrip, found 6 days ago

$215

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, Jun 15 from John Wayne to San Francisco Intl., returning Mon, Jun 15, priced at $215 found 6 days ago

Mon, Aug 10 - Wed, Aug 19

SNA

John Wayne

ORD

O'Hare Intl.

$234 Roundtrip, found 5 days ago

$234

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Aug 10 from John Wayne to O'Hare Intl., returning Wed, Aug 19, priced at $234 found 5 days ago

Fri, Jul 17 - Mon, Jul 20

LGB

Long Beach Municipal

LAS

Harry Reid Intl.

$247 Roundtrip, found 3 days ago

$247

Roundtrip

found 3 days ago

Select Southwest Airlines flight, departing Fri, Jul 17 from Long Beach Municipal to Harry Reid Intl., returning Mon, Jul 20, priced at $247 found 3 days ago

Wed, Jun 10 - Sat, Jun 13

ONT

Ontario Intl. Airport

DFW

Dallas-Fort Worth Intl.

$248 Roundtrip, found 10 hours ago

$248

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Wed, Jun 10 from Ontario Intl. Airport to Dallas-Fort Worth Intl., returning Sat, Jun 13, priced at $248 found 10 hours ago

Sat, Jun 13 - Mon, Jun 15

LGB

Long Beach Municipal

SLC

Salt Lake City Intl.

$249 Roundtrip, found 2 days ago

$249

Roundtrip

found 2 days ago

Select Delta flight, departing Sat, Jun 13 from Long Beach Municipal to Salt Lake City Intl., returning Mon, Jun 15, priced at $249 found 2 days ago

Thu, Sep 24 - Thu, Oct 1

SBD

San Bernardino Intl.

SFO

San Francisco Intl.

$256 Roundtrip, found 6 days ago

$256

Roundtrip

found 6 days ago

Select Breeze Airways flight, departing Thu, Sep 24 from San Bernardino Intl. to San Francisco Intl., returning Thu, Oct 1, priced at $256 found 6 days ago

Sat, Oct 31 - Thu, Nov 5

ONT

Ontario Intl. Airport

JFK

John F. Kennedy Intl.

$257 Roundtrip, found 1 day ago

$257

Roundtrip

found 1 day ago

Select Delta flight, departing Sat, Oct 31 from Ontario Intl. Airport to John F. Kennedy Intl., returning Thu, Nov 5, priced at $257 found 1 day ago

Mon, Aug 3 - Tue, Aug 18

ONT

Ontario Intl. Airport

LGA

LaGuardia

$257 Roundtrip, found 2 days ago

$257

Roundtrip

found 2 days ago

Select Delta flight, departing Mon, Aug 3 from Ontario Intl. Airport to LaGuardia, returning Tue, Aug 18, priced at $257 found 2 days ago

Tue, Jun 9 - Wed, Jun 17

LGB

Long Beach Municipal

DFW

Dallas-Fort Worth Intl.

$269 Roundtrip, found 1 day ago

$269

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Jun 9 from Long Beach Municipal to Dallas-Fort Worth Intl., returning Wed, Jun 17, priced at $269 found 1 day ago

Thu, Jul 9 - Tue, Jul 14

LGB

Long Beach Municipal

DAL

Love Field

$283 Roundtrip, found 5 days ago

$283

Roundtrip

found 5 days ago

Select Southwest Airlines flight, departing Thu, Jul 9 from Long Beach Municipal to Love Field, returning Tue, Jul 14, priced at $283 found 5 days ago

Tue, Sep 15 - Tue, Sep 22

SNA

John Wayne

DEN

Denver Intl.

$305 Roundtrip, found 4 hours ago

$305

Roundtrip

found 4 hours ago

Select United flight, departing Tue, Sep 15 from John Wayne to Denver Intl., returning Tue, Sep 22, priced at $305 found 4 hours ago