Flights from Los Angeles to Longmont

Cheapest flights from Los Angeles

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, Oct 7 - Wed, Oct 22

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$152 Roundtrip, found 5 days ago

$152

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Wed, Oct 22, priced at $152 found 5 days ago

Tue, Oct 7 - Sat, Oct 25

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$157 Roundtrip, found 5 days ago

$157

Roundtrip

found 5 days ago

Select United flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Sat, Oct 25, priced at $157 found 5 days ago

Tue, Oct 7 - Sat, Oct 25

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$167 Roundtrip, found 5 days ago

$167

Roundtrip

found 5 days ago

Select United flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Sat, Oct 25, priced at $167 found 5 days ago

Tue, Oct 7 - Sat, Oct 25

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$168 Roundtrip, found 5 days ago

$168

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Sat, Oct 25, priced at $168 found 5 days ago

Sat, Aug 16 - Sat, Aug 23

LAX

Los Angeles Intl.

DEN

Denver Intl.

$170 Roundtrip, found 5 days ago

$170

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Los Angeles Intl. to Denver Intl., returning Sat, Aug 23, priced at $170 found 5 days ago

Tue, Oct 7 - Sat, Oct 25

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$172 Roundtrip, found 5 days ago

$172

Roundtrip

found 5 days ago

Select American Airlines flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Sat, Oct 25, priced at $172 found 5 days ago

Thu, Aug 14 - Sat, Aug 23

LAX

Los Angeles Intl.

DEN

Denver Intl.

$174 Roundtrip, found 5 days ago

$174

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Los Angeles Intl. to Denver Intl., returning Sat, Aug 23, priced at $174 found 5 days ago

Tue, Oct 7 - Thu, Oct 23

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$175 Roundtrip, found 5 days ago

$175

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Thu, Oct 23, priced at $175 found 5 days ago

Tue, Oct 7 - Sat, Oct 25

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$176 Roundtrip, found 5 days ago

$176

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Sat, Oct 25, priced at $176 found 5 days ago

Thu, Aug 14 - Thu, Aug 21

LAX

Los Angeles Intl.

DEN

Denver Intl.

$178 Roundtrip, found 5 days ago

$178

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Los Angeles Intl. to Denver Intl., returning Thu, Aug 21, priced at $178 found 5 days ago

Sat, Aug 16 - Tue, Aug 19

LAX

Los Angeles Intl.

DEN

Denver Intl.

$180 Roundtrip, found 5 days ago

$180

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Los Angeles Intl. to Denver Intl., returning Tue, Aug 19, priced at $180 found 5 days ago

Sun, Aug 10 - Thu, Aug 14

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$182 Roundtrip, found 5 days ago

$182

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, Aug 10 from Los Angeles - Ontario Intl. to Denver Intl., returning Thu, Aug 14, priced at $182 found 5 days ago

Thu, Aug 14 - Tue, Aug 19

LAX

Los Angeles Intl.

DEN

Denver Intl.

$184 Roundtrip, found 5 days ago

$184

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Los Angeles Intl. to Denver Intl., returning Tue, Aug 19, priced at $184 found 5 days ago

Tue, Oct 7 - Sat, Oct 25

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$187 Roundtrip, found 5 days ago

$187

Roundtrip

found 5 days ago

Select American Airlines flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Sat, Oct 25, priced at $187 found 5 days ago

Tue, Oct 7 - Sat, Oct 25

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$187 Roundtrip, found 5 days ago

$187

Roundtrip

found 5 days ago

Select Delta flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Sat, Oct 25, priced at $187 found 5 days ago

Thu, Aug 14 - Mon, Aug 18

LAX

Los Angeles Intl.

DEN

Denver Intl.

$188 Roundtrip, found 5 days ago

$188

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Los Angeles Intl. to Denver Intl., returning Mon, Aug 18, priced at $188 found 5 days ago

Sun, Aug 10 - Mon, Aug 11

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$190 Roundtrip, found 5 days ago

$190

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, Aug 10 from Los Angeles - Ontario Intl. to Denver Intl., returning Mon, Aug 11, priced at $190 found 5 days ago

Tue, Oct 7 - Sat, Oct 25

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$197 Roundtrip, found 5 days ago

$197

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Sat, Oct 25, priced at $197 found 5 days ago

Tue, Oct 7 - Sat, Oct 25

ONT

Los Angeles - Ontario Intl.

DEN

Denver Intl.

$197 Roundtrip, found 5 days ago

$197

Roundtrip

found 5 days ago

Select United flight, departing Tue, Oct 7 from Los Angeles - Ontario Intl. to Denver Intl., returning Sat, Oct 25, priced at $197 found 5 days ago

Tue, Aug 19 - Tue, Aug 19

SNA

John Wayne

DEN

Denver Intl.

$211 Roundtrip, found 6 days ago

$211

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Aug 19 from John Wayne to Denver Intl., returning Tue, Aug 19, priced at $211 found 6 days ago