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.

Thu, Oct 22 - Thu, Oct 22

ONT

Ontario Intl. Airport

SFO

San Francisco Intl.

$112 Roundtrip, found 1 day ago

$112

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Oct 22 from Ontario Intl. Airport to San Francisco Intl., returning Thu, Oct 22, priced at $112 found 1 day ago

Thu, Oct 29 - Thu, Nov 19

ONT

Ontario Intl. Airport

PHX

Sky Harbor Intl.

$128 Roundtrip, found 1 day ago

$128

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Oct 29 from Ontario Intl. Airport to Sky Harbor Intl., returning Thu, Nov 19, priced at $128 found 1 day ago

Sat, Oct 17 - Mon, Oct 19

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$128 Roundtrip, found 3 days ago

$128

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, Oct 17 from Ontario Intl. Airport to Denver Intl., returning Mon, Oct 19, priced at $128 found 3 days ago

Thu, Nov 12 - Mon, Nov 16

SNA

John Wayne

LAS

Harry Reid Intl.

$140 Roundtrip, found 3 days ago

$140

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Nov 12 from John Wayne to Harry Reid Intl., returning Mon, Nov 16, priced at $140 found 3 days ago

Tue, Oct 27 - Tue, Oct 27

ONT

Ontario Intl. Airport

LAS

Harry Reid Intl.

$151 Roundtrip, found 1 hour ago

$151

Roundtrip

found 1 hour ago

Select Frontier Airlines flight, departing Tue, Oct 27 from Ontario Intl. Airport to Harry Reid Intl., returning Tue, Oct 27, priced at $151 found 1 hour ago

Tue, Oct 13 - Tue, Oct 20

LGB

Long Beach Municipal

LAS

Harry Reid Intl.

$154 Roundtrip, found 1 hour ago

$154

Roundtrip

found 1 hour ago

Select Southwest Airlines flight, departing Tue, Oct 13 from Long Beach Municipal to Harry Reid Intl., returning Tue, Oct 20, priced at $154 found 1 hour ago

Wed, Dec 9 - Sat, Dec 12

ONT

Ontario Intl. Airport

SEA

Seattle - Tacoma Intl.

$188 Roundtrip, found 1 day ago

$188

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Dec 9 from Ontario Intl. Airport to Seattle - Tacoma Intl., returning Sat, Dec 12, priced at $188 found 1 day ago

Sat, Nov 21 - Thu, Dec 3

SNA

John Wayne

SFO

San Francisco Intl.

$196 Roundtrip, found 6 days ago

$196

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Nov 21 from John Wayne to San Francisco Intl., returning Thu, Dec 3, priced at $196 found 6 days ago

Thu, Oct 29 - Wed, Nov 18

ONT

Ontario Intl. Airport

ORD

O'Hare Intl.

$210 Roundtrip, found 4 days ago

$210

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Thu, Oct 29 from Ontario Intl. Airport to O'Hare Intl., returning Wed, Nov 18, priced at $210 found 4 days ago

Sat, Feb 27 - Wed, Mar 3

ONT

Ontario Intl. Airport

DFW

Dallas-Fort Worth Intl.

$235 Roundtrip, found 5 days ago

$235

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Feb 27 from Ontario Intl. Airport to Dallas-Fort Worth Intl., returning Wed, Mar 3, priced at $235 found 5 days ago

Thu, Dec 10 - Sun, Dec 13

LGB

Long Beach Municipal

SEA

Seattle - Tacoma Intl.

$242 Roundtrip, found 1 day ago

$242

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Thu, Dec 10 from Long Beach Municipal to Seattle - Tacoma Intl., returning Sun, Dec 13, priced at $242 found 1 day ago

Thu, Oct 1 - Mon, Oct 12

SNA

John Wayne

PHX

Sky Harbor Intl.

$256 Roundtrip, found 2 days ago

$256

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Oct 1 from John Wayne to Sky Harbor Intl., returning Mon, Oct 12, priced at $256 found 2 days ago

Tue, Nov 3 - Tue, Nov 17

SNA

John Wayne

PAE

Seattle Paine Field Intl. Airport

$265 Roundtrip, found 3 days ago

$265

Roundtrip

found 3 days ago

Select Alaska Airlines flight, departing Tue, Nov 3 from John Wayne to Seattle Paine Field Intl. Airport, returning Tue, Nov 17, priced at $265 found 3 days ago

Thu, Dec 10 - Sun, Dec 13

SNA

John Wayne

SEA

Seattle - Tacoma Intl.

$267 Roundtrip, found 1 day ago

$267

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Thu, Dec 10 from John Wayne to Seattle - Tacoma Intl., returning Sun, Dec 13, priced at $267 found 1 day ago

Tue, Oct 27 - Wed, Nov 4

ONT

Ontario Intl. Airport

JFK

John F. Kennedy Intl.

$327 Roundtrip, found 1 day ago

$327

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Oct 27 from Ontario Intl. Airport to John F. Kennedy Intl., returning Wed, Nov 4, priced at $327 found 1 day ago

Fri, Oct 16 - Sat, Oct 17

SNA

John Wayne

ORD

O'Hare Intl.

$334 Roundtrip, found 2 days ago

$334

Roundtrip

found 2 days ago

Select Alaska Airlines flight, departing Fri, Oct 16 from John Wayne to O'Hare Intl., returning Sat, Oct 17, priced at $334 found 2 days ago

Sat, Oct 17 - Sat, Oct 24

ONT

Ontario Intl. Airport

DAL

Love Field

$340 Roundtrip, found 6 days ago

$340

Roundtrip

found 6 days ago

Select Southwest Airlines flight, departing Sat, Oct 17 from Ontario Intl. Airport to Love Field, returning Sat, Oct 24, priced at $340 found 6 days ago

Fri, Jan 22 - Fri, Feb 12

ONT

Ontario Intl. Airport

PAE

Seattle Paine Field Intl. Airport

$342 Roundtrip, found 1 day ago

$342

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Fri, Jan 22 from Ontario Intl. Airport to Seattle Paine Field Intl. Airport, returning Fri, Feb 12, priced at $342 found 1 day ago

Wed, Oct 28 - Wed, Nov 4

ONT

Ontario Intl. Airport

LGA

LaGuardia

$372 Roundtrip, found 1 day ago

$372

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Oct 28 from Ontario Intl. Airport to LaGuardia, returning Wed, Nov 4, priced at $372 found 1 day ago

Tue, Sep 29 - Sat, Oct 3

ONT

Ontario Intl. Airport

SLC

Salt Lake City Intl.

$384 Roundtrip, found 5 days ago

$384

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Sep 29 from Ontario Intl. Airport to Salt Lake City Intl., returning Sat, Oct 3, priced at $384 found 5 days ago