Cheap flights from Louisville to Ontario

View AU$841 flight on Mon, 22 Sep. 2025Opens in a new window

Popular airlines from Louisville to Ontario

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Cheap Flights from Louisville (SDF) to Ontario (QLA)

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

Delta
Tue, 9 Dec. - Sat, 13 Dec.
SDF
Louisville
ONT
Ontario
AU$559 Return, found 5 days ago
AU$559
Return
found 5 days ago
Select Delta flight, departing Tue, 9 Dec. from Louisville to Ontario, returning Sat, 13 Dec., priced at AU$559 found 5 days ago
Delta
Fri, 5 Dec. - Sun, 14 Dec.
SDF
Louisville
ONT
Ontario
AU$568 Return, found 5 days ago
AU$568
Return
found 5 days ago
Select Delta flight, departing Fri, 5 Dec. from Louisville to Ontario, returning Sun, 14 Dec., priced at AU$568 found 5 days ago
Delta
Fri, 5 Dec. - Sat, 13 Dec.
SDF
Louisville
ONT
Ontario
AU$582 Return, found 5 days ago
AU$582
Return
found 5 days ago
Select Delta flight, departing Fri, 5 Dec. from Louisville to Ontario, returning Sat, 13 Dec., priced at AU$582 found 5 days ago

Find the cheapest month to fly from Louisville (SDF) to Ontario (ONT)

August is typically the cheapest month to fly

From AU$349 - AU$1,355 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.