$44 Cheap Frontier Airlines flights Las Vegas (LAS) to Ontario (ONT)

$44 Cheap Frontier Airlines flights Las Vegas (LAS) to Ontario (ONT)

Prices were available within the past 7 days and start at $44 for one-way flights and $58 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 3 - Tue, May 6

LAS

Las Vegas

ONT

Ontario

$58 Roundtrip, found 6 days ago

$58

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, May 3 from Las Vegas to Ontario, returning Tue, May 6, priced at $58 found 6 days ago

Tue, Jun 10 - Sun, Jun 15

LAS

Las Vegas

ONT

Ontario

$68 Roundtrip, found 1 day ago

$68

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 10 from Las Vegas to Ontario, returning Sun, Jun 15, priced at $68 found 1 day ago

Sat, May 3 - Sun, May 11

LAS

Las Vegas

ONT

Ontario

$73 Roundtrip, found 6 days ago

$73

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, May 3 from Las Vegas to Ontario, returning Sun, May 11, priced at $73 found 6 days ago

Sat, May 3 - Sat, May 3

LAS

Las Vegas

ONT

Ontario

$75 Roundtrip, found 6 days ago

$75

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, May 3 from Las Vegas to Ontario, returning Sat, May 3, priced at $75 found 6 days ago

Tue, Jun 10 - Fri, Jun 20

LAS

Las Vegas

ONT

Ontario

$78 Roundtrip, found 1 day ago

$78

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 10 from Las Vegas to Ontario, returning Fri, Jun 20, priced at $78 found 1 day ago

Thu, Jul 24 - Tue, Jul 29

LAS

Las Vegas

ONT

Ontario

$79 Roundtrip, found 6 days ago

$79

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Jul 24 from Las Vegas to Ontario, returning Tue, Jul 29, priced at $79 found 6 days ago

Sat, May 3 - Sun, May 4

LAS

Las Vegas

ONT

Ontario

$86 Roundtrip, found 6 days ago

$86

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, May 3 from Las Vegas to Ontario, returning Sun, May 4, priced at $86 found 6 days ago

Fri, Jul 25 - Tue, Jul 29

LAS

Las Vegas

ONT

Ontario

$88 Roundtrip, found 6 days ago

$88

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Jul 25 from Las Vegas to Ontario, returning Tue, Jul 29, priced at $88 found 6 days ago

Sun, Jun 15 - Fri, Jun 20

LAS

Las Vegas

ONT

Ontario

$95 Roundtrip, found 1 day ago

$95

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Jun 15 from Las Vegas to Ontario, returning Fri, Jun 20, priced at $95 found 1 day ago