Flights from Lake Forest

Cheapest flights from Lake Forest

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, Nov 12 - Tue, Nov 18

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$67 Roundtrip, found 1 day ago

$67

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Nov 12 from Los Angeles - Ontario Intl. to Denver Intl., returning Tue, Nov 18, priced at $67 found 1 day ago

Wed, Oct 15 - Thu, Oct 16

ONT

Los Angeles - Ontario Intl.

LAS

Harry Reid Intl.

$68 Roundtrip, found 2 days ago

$68

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Oct 15 from Los Angeles - Ontario Intl. to Harry Reid Intl., returning Thu, Oct 16, priced at $68 found 2 days ago

Thu, Dec 4 - Fri, Dec 5

SNA

John Wayne

LAS

Harry Reid Intl.

$72 Roundtrip, found 4 days ago

$72

Roundtrip

found 4 days ago

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

Mon, Oct 20 - Mon, Oct 27

ONT

Los Angeles - Ontario Intl.

SFO

San Francisco Intl.

$76 Roundtrip, found 6 days ago

$76

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, Oct 20 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Mon, Oct 27, priced at $76 found 6 days ago

Tue, Oct 28 - Wed, Oct 29

SNA

John Wayne

DEN

Denver Intl.

$93 Roundtrip, found 6 days ago

$93

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Oct 28 from John Wayne to Denver Intl., returning Wed, Oct 29, priced at $93 found 6 days ago

Thu, Nov 6 - Mon, Nov 17

ONT

Los Angeles - Ontario Intl.

DFW

Dallas-Fort Worth Intl.

$108 Roundtrip, found 18 hours ago

$108

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Thu, Nov 6 from Los Angeles - Ontario Intl. to Dallas-Fort Worth Intl., returning Mon, Nov 17, priced at $108 found 18 hours ago

Wed, Nov 5 - Tue, Nov 11

SNA

John Wayne

DFW

Dallas-Fort Worth Intl.

$118 Roundtrip, found 2 days ago

$118

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Nov 5 from John Wayne to Dallas-Fort Worth Intl., returning Tue, Nov 11, priced at $118 found 2 days ago

Mon, Nov 17 - Sat, Nov 22

SNA

John Wayne

PHX

Sky Harbor Intl.

$118 Roundtrip, found 5 days ago

$118

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Nov 17 from John Wayne to Sky Harbor Intl., returning Sat, Nov 22, priced at $118 found 5 days ago

Sun, Oct 26 - Sun, Nov 2

ONT

Los Angeles - Ontario Intl.

SEA

Seattle - Tacoma Intl.

$128 Roundtrip, found 6 days ago

$128

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, Oct 26 from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl., returning Sun, Nov 2, priced at $128 found 6 days ago

Thu, Nov 13 - Thu, Nov 13

SNA

John Wayne

SLC

Salt Lake City Intl.

$128 Roundtrip, found 5 days ago

$128

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Nov 13 from John Wayne to Salt Lake City Intl., returning Thu, Nov 13, priced at $128 found 5 days ago

Wed, Nov 19 - Thu, Dec 4

SNA

John Wayne

SFO

San Francisco Intl.

$145 Roundtrip, found 6 days ago

$145

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Nov 19 from John Wayne to San Francisco Intl., returning Thu, Dec 4, priced at $145 found 6 days ago

Sat, Oct 18 - Tue, Oct 21

ONT

Los Angeles - Ontario Intl.

SLC

Salt Lake City Intl.

$172 Roundtrip, found 5 days ago

$172

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Oct 18 from Los Angeles - Ontario Intl. to Salt Lake City Intl., returning Tue, Oct 21, priced at $172 found 5 days ago

Fri, Dec 5 - Sat, Dec 6

ONT

Los Angeles - Ontario Intl.

DAL

Love Field

$231 Roundtrip, found 7 hours ago

$231

Roundtrip

found 7 hours ago

Select Delta flight, departing Fri, Dec 5 from Los Angeles - Ontario Intl. to Love Field, returning Sat, Dec 6, priced at $231 found 7 hours ago

Mon, Nov 17 - Thu, Nov 20

SNA

John Wayne

ORD

O'Hare Intl.

$255 Roundtrip, found 5 days ago

$255

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Mon, Nov 17 from John Wayne to O'Hare Intl., returning Thu, Nov 20, priced at $255 found 5 days ago

Tue, Nov 18 - Mon, Nov 24

SNA

John Wayne

EWR

Newark Liberty Intl. Airport

$260 Roundtrip, found 5 days ago

$260

Roundtrip

found 5 days ago

Select United flight, departing Tue, Nov 18 from John Wayne to Newark Liberty Intl. Airport, returning Mon, Nov 24, priced at $260 found 5 days ago

Thu, Nov 13 - Mon, Nov 17

LGB

Long Beach Municipal

DEN

Denver Intl.

$331 Roundtrip, found 1 day ago

$331

Roundtrip

found 1 day ago

Select Delta flight, departing Thu, Nov 13 from Long Beach Municipal to Denver Intl., returning Mon, Nov 17, priced at $331 found 1 day ago

Tue, Nov 18 - Mon, Nov 24

SNA

John Wayne

LGA

LaGuardia

$381 Roundtrip, found 5 days ago

$381

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Tue, Nov 18 from John Wayne to LaGuardia, returning Mon, Nov 24, priced at $381 found 5 days ago

Mon, May 18 - Tue, Jun 2

SNA

John Wayne

JFK

John F. Kennedy Intl.

$388 Roundtrip, found 5 days ago

$388

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Mon, May 18 from John Wayne to John F. Kennedy Intl., returning Tue, Jun 2, priced at $388 found 5 days ago

Tue, Feb 10 - Tue, Feb 17

LGB

Long Beach Municipal

PHX

Sky Harbor Intl.

$407 Roundtrip, found 6 days ago

$407

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Feb 10 from Long Beach Municipal to Sky Harbor Intl., returning Tue, Feb 17, priced at $407 found 6 days ago

Sun, Oct 12 - Fri, Oct 17

ONT

Los Angeles - Ontario Intl.

LGA

LaGuardia

$424 Roundtrip, found 4 days ago

$424

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Sun, Oct 12 from Los Angeles - Ontario Intl. to LaGuardia, returning Fri, Oct 17, priced at $424 found 4 days ago