$139 Cheap Alaska Airlines flights St. Louis (STL) to Ontario (ONT)

$139 Cheap Alaska Airlines flights St. Louis (STL) to Ontario (ONT)

Prices were available within the past 7 days and start at $139 for one-way flights and $216 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Nov 3 - Thu, Nov 6

STL

St. Louis

ONT

Ontario

$216 Roundtrip, found 1 day ago

$216

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Mon, Nov 3 from St. Louis to Ontario, returning Thu, Nov 6, priced at $216 found 1 day ago

Thu, Oct 2 - Sun, Oct 5

STL

St. Louis

ONT

Ontario

$230 Roundtrip, found 6 days ago

$230

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Thu, Oct 2 from St. Louis to Ontario, returning Sun, Oct 5, priced at $230 found 6 days ago

Mon, Nov 3 - Thu, Nov 6

STL

St. Louis

ONT

Ontario

$279 Roundtrip, found 1 day ago

$279

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Mon, Nov 3 from St. Louis to Ontario, returning Thu, Nov 6, priced at $279 found 1 day ago

Thu, Oct 2 - Sun, Oct 5

STL

St. Louis

ONT

Ontario

$280 Roundtrip, found 6 days ago

$280

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Thu, Oct 2 from St. Louis to Ontario, returning Sun, Oct 5, priced at $280 found 6 days ago

Thu, Oct 2 - Sun, Oct 5

STL

St. Louis

ONT

Ontario

$330 Roundtrip, found 6 days ago

$330

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Thu, Oct 2 from St. Louis to Ontario, returning Sun, Oct 5, priced at $330 found 6 days ago