$89 Cheap Frontier Airlines flights Atlanta (ATL) to Ontario (ONT)

$89 Cheap Frontier Airlines flights Atlanta (ATL) to Ontario (ONT)

Prices were available within the past 7 days and start at $89 for one-way flights and $178 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 17 - Thu, Oct 23

ATL

Atlanta

ONT

Ontario

$178 Roundtrip, found 1 day ago

$178

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Oct 17 from Atlanta to Ontario, returning Thu, Oct 23, priced at $178 found 1 day ago

Wed, Sep 24 - Sun, Sep 28

ATL

Atlanta

ONT

Ontario

$234 Roundtrip, found 23 hours ago

$234

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Wed, Sep 24 from Atlanta to Ontario, returning Sun, Sep 28, priced at $234 found 23 hours ago

Wed, Sep 24 - Thu, Sep 25

ATL

Atlanta

ONT

Ontario

$258 Roundtrip, found 23 hours ago

$258

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Wed, Sep 24 from Atlanta to Ontario, returning Thu, Sep 25, priced at $258 found 23 hours ago

Sun, Sep 21 - Sun, Sep 28

ATL

Atlanta

ONT

Ontario

$266 Roundtrip, found 23 hours ago

$266

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sun, Sep 21 from Atlanta to Ontario, returning Sun, Sep 28, priced at $266 found 23 hours ago

Sun, Sep 21 - Thu, Sep 25

ATL

Atlanta

ONT

Ontario

$290 Roundtrip, found 23 hours ago

$290

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sun, Sep 21 from Atlanta to Ontario, returning Thu, Sep 25, priced at $290 found 23 hours ago

Mon, Sep 22 - Thu, Sep 25

ATL

Atlanta

ONT

Ontario

$306 Roundtrip, found 15 hours ago

$306

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Mon, Sep 22 from Atlanta to Ontario, returning Thu, Sep 25, priced at $306 found 15 hours ago

Mon, Sep 22 - Thu, Sep 25

ATL

Atlanta

ONT

Ontario

$352 Roundtrip, found 15 hours ago

$352

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Mon, Sep 22 from Atlanta to Ontario, returning Thu, Sep 25, priced at $352 found 15 hours ago

Sun, Sep 21 - Mon, Sep 22

ATL

Atlanta

ONT

Ontario

$354 Roundtrip, found 23 hours ago

$354

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sun, Sep 21 from Atlanta to Ontario, returning Mon, Sep 22, priced at $354 found 23 hours ago