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, Nov 17 - Tue, Nov 17

ONT

Ontario Intl. Airport

DEN

Denver Intl.

$70 Roundtrip, found 1 day ago

$70

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Nov 17 from Ontario Intl. Airport to Denver Intl., returning Tue, Nov 17, priced at $70 found 1 day ago

Thu, Nov 12 - Sat, Nov 21

ONT

Ontario Intl. Airport

SFO

San Francisco Intl.

$98 Roundtrip, found 19 hours ago

$98

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Thu, Nov 12 from Ontario Intl. Airport to San Francisco Intl., returning Sat, Nov 21, priced at $98 found 19 hours ago

Tue, Nov 24 - Tue, Nov 24

ONT

Ontario Intl. Airport

LAS

Harry Reid Intl.

$115 Roundtrip, found 2 days ago

$115

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Nov 24 from Ontario Intl. Airport to Harry Reid Intl., returning Tue, Nov 24, priced at $115 found 2 days ago

Mon, Nov 23 - Fri, Nov 27

ONT

Ontario Intl. Airport

LAS

Harry Reid Intl.

$127 Roundtrip, found 2 days ago

$127

Roundtrip

found 2 days ago

Select Southwest Airlines flight, departing Mon, Nov 23 from Ontario Intl. Airport to Harry Reid Intl., returning Fri, Nov 27, priced at $127 found 2 days ago

Fri, Nov 27 - Sat, Dec 5

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 Fri, Nov 27 from Ontario Intl. Airport to Sky Harbor Intl., returning Sat, Dec 5, priced at $128 found 1 day ago

Tue, Dec 15 - Thu, Jan 7

ONT

Ontario Intl. Airport

DFW

Dallas-Fort Worth Intl.

$148 Roundtrip, found 2 days ago

$148

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Dec 15 from Ontario Intl. Airport to Dallas-Fort Worth Intl., returning Thu, Jan 7, priced at $148 found 2 days ago

Tue, Nov 24 - Wed, Dec 2

ONT

Ontario Intl. Airport

SEA

Seattle - Tacoma Intl.

$174 Roundtrip, found 5 hours ago

$174

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Tue, Nov 24 from Ontario Intl. Airport to Seattle - Tacoma Intl., returning Wed, Dec 2, priced at $174 found 5 hours ago

Mon, Nov 2 - Thu, Nov 5

SNA

John Wayne

LAS

Harry Reid Intl.

$183 Roundtrip, found 10 hours ago

$183

Roundtrip

found 10 hours ago

Select Breeze Airways flight, departing Mon, Nov 2 from John Wayne to Harry Reid Intl., returning Thu, Nov 5, priced at $183 found 10 hours ago

Mon, Nov 30 - Mon, Dec 7

ONT

Ontario Intl. Airport

PHX

Sky Harbor Intl.

$192 Roundtrip, found 1 day ago

$192

Roundtrip

found 1 day ago

Select American Airlines flight, departing Mon, Nov 30 from Ontario Intl. Airport to Sky Harbor Intl., returning Mon, Dec 7, priced at $192 found 1 day ago

Mon, Dec 21 - Tue, Jan 5

ONT

Ontario Intl. Airport

ORD

O'Hare Intl.

$192 Roundtrip, found 5 days ago

$192

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Dec 21 from Ontario Intl. Airport to O'Hare Intl., returning Tue, Jan 5, priced at $192 found 5 days ago

Mon, Nov 23 - Fri, Nov 27

ONT

Ontario Intl. Airport

LAS

Harry Reid Intl.

$203 Roundtrip, found 2 days ago

$203

Roundtrip

found 2 days ago

Select United flight, departing Mon, Nov 23 from Ontario Intl. Airport to Harry Reid Intl., returning Fri, Nov 27, priced at $203 found 2 days ago

Sat, Nov 7 - Tue, Nov 10

SNA

John Wayne

SFO

San Francisco Intl.

$242 Roundtrip, found 6 days ago

$242

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Sat, Nov 7 from John Wayne to San Francisco Intl., returning Tue, Nov 10, priced at $242 found 6 days ago

Tue, Dec 1 - Sat, Dec 5

SNA

John Wayne

SEA

Seattle - Tacoma Intl.

$247 Roundtrip, found 1 hour ago

$247

Roundtrip

found 1 hour ago

Select Alaska Airlines flight, departing Tue, Dec 1 from John Wayne to Seattle - Tacoma Intl., returning Sat, Dec 5, priced at $247 found 1 hour ago

Tue, Dec 1 - Sat, Dec 5

SNA

John Wayne

PAE

Seattle Paine Field Intl. Airport

$267 Roundtrip, found 1 hour ago

$267

Roundtrip

found 1 hour ago

Select Alaska Airlines flight, departing Tue, Dec 1 from John Wayne to Seattle Paine Field Intl. Airport, returning Sat, Dec 5, priced at $267 found 1 hour ago

Wed, Feb 24 - Sun, Feb 28

ONT

Ontario Intl. Airport

SLC

Salt Lake City Intl.

$297 Roundtrip, found 22 hours ago

$297

Roundtrip

found 22 hours ago

Select Southwest Airlines flight, departing Wed, Feb 24 from Ontario Intl. Airport to Salt Lake City Intl., returning Sun, Feb 28, priced at $297 found 22 hours ago

Fri, Nov 6 - Tue, Nov 10

ONT

Ontario Intl. Airport

LGA

LaGuardia

$312 Roundtrip, found 6 days ago

$312

Roundtrip

found 6 days ago

Select Delta flight, departing Fri, Nov 6 from Ontario Intl. Airport to LaGuardia, returning Tue, Nov 10, priced at $312 found 6 days ago

Tue, Nov 17 - Thu, Nov 19

SNA

John Wayne

ORD

O'Hare Intl.

$374 Roundtrip, found 5 days ago

$374

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Tue, Nov 17 from John Wayne to O'Hare Intl., returning Thu, Nov 19, priced at $374 found 5 days ago

Tue, Dec 15 - Thu, Dec 17

LGB

Long Beach Municipal

LAS

Harry Reid Intl.

$377 Roundtrip, found 4 days ago

$377

Roundtrip

found 4 days ago

Select Delta flight, departing Tue, Dec 15 from Long Beach Municipal to Harry Reid Intl., returning Thu, Dec 17, priced at $377 found 4 days ago

Tue, Nov 3 - Tue, Nov 10

ONT

Ontario Intl. Airport

JFK

John F. Kennedy Intl.

$402 Roundtrip, found 1 day ago

$402

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Nov 3 from Ontario Intl. Airport to John F. Kennedy Intl., returning Tue, Nov 10, priced at $402 found 1 day ago

Thu, Nov 5 - Thu, Nov 12

ONT

Ontario Intl. Airport

DAL

Love Field

$503 Roundtrip, found 6 days ago

$503

Roundtrip

found 6 days ago

Select Southwest Airlines flight, departing Thu, Nov 5 from Ontario Intl. Airport to Love Field, returning Thu, Nov 12, priced at $503 found 6 days ago