Cheap United flights Louisville (SDF) to Ontario (ONT)

Cheap United flights Louisville (SDF) to Ontario (ONT)

Prices were available within the past 7 days and start at for one-way flights and $654 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Dec 12 - Thu, Jan 1

SDF

Louisville

ONT

Ontario

$654 Roundtrip, found 23 hours ago

$654

Roundtrip

found 23 hours ago

Select United flight, departing Fri, Dec 12 from Louisville to Ontario, returning Thu, Jan 1, priced at $654 found 23 hours ago

Sat, Dec 13 - Tue, Dec 30

SDF

Louisville

ONT

Ontario

$712 Roundtrip, found 23 hours ago

$712

Roundtrip

found 23 hours ago

Select United flight, departing Sat, Dec 13 from Louisville to Ontario, returning Tue, Dec 30, priced at $712 found 23 hours ago

Sun, Dec 7 - Sun, Dec 21

SDF

Louisville

ONT

Ontario

$742 Roundtrip, found 20 hours ago

$742

Roundtrip

found 20 hours ago

Select United flight, departing Sun, Dec 7 from Louisville to Ontario, returning Sun, Dec 21, priced at $742 found 20 hours ago

Thu, Dec 4 - Mon, Dec 22

SDF

Louisville

ONT

Ontario

$822 Roundtrip, found 20 hours ago

$822

Roundtrip

found 20 hours ago

Select United flight, departing Thu, Dec 4 from Louisville to Ontario, returning Mon, Dec 22, priced at $822 found 20 hours ago