$33 Cheap Frontier Airlines flights Las Vegas (LAS) to Ontario (ONT)

$33 Cheap Frontier Airlines flights Las Vegas (LAS) to Ontario (ONT)

Prices were available within the past 7 days and start at $33 for one-way flights and $90 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 3 - Sun, Jun 14

LAS

Las Vegas

ONT

Ontario

$90 Roundtrip, found 3 days ago

$90

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Jun 3 from Las Vegas to Ontario, returning Sun, Jun 14, priced at $90 found 3 days ago

Thu, Jun 4 - Fri, Jun 12

LAS

Las Vegas

ONT

Ontario

$109 Roundtrip, found 3 days ago

$109

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Jun 4 from Las Vegas to Ontario, returning Fri, Jun 12, priced at $109 found 3 days ago

Thu, Jun 4 - Fri, Jun 12

LAS

Las Vegas

ONT

Ontario

$128 Roundtrip, found 3 days ago

$128

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Jun 4 from Las Vegas to Ontario, returning Fri, Jun 12, priced at $128 found 3 days ago

Tue, May 19 - Wed, May 20

LAS

Las Vegas

ONT

Ontario

$134 Roundtrip, found 2 days ago

$134

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, May 19 from Las Vegas to Ontario, returning Wed, May 20, priced at $134 found 2 days ago

Wed, Jun 3 - Mon, Jun 15

LAS

Las Vegas

ONT

Ontario

$141 Roundtrip, found 2 days ago

$141

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jun 3 from Las Vegas to Ontario, returning Mon, Jun 15, priced at $141 found 2 days ago

Tue, May 19 - Wed, May 20

LAS

Las Vegas

ONT

Ontario

$144 Roundtrip, found 2 days ago

$144

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, May 19 from Las Vegas to Ontario, returning Wed, May 20, priced at $144 found 2 days ago