$219 Cheap Delta flights St. Louis (STL) to Ontario (ONT)

$219 Cheap Delta flights St. Louis (STL) to Ontario (ONT)

Prices were available within the past 7 days and start at $219 for one-way flights and $437 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 17 - Wed, Jun 24

STL

St. Louis

ONT

Ontario

$437 Roundtrip, found 5 days ago

$437

Roundtrip

found 5 days ago

Select Delta flight, departing Wed, Jun 17 from St. Louis to Ontario, returning Wed, Jun 24, priced at $437 found 5 days ago

Sun, Mar 29 - Fri, Apr 3

STL

St. Louis

ONT

Ontario

$455 Roundtrip, found 17 hours ago

$455

Roundtrip

found 17 hours ago

Select Delta flight, departing Sun, Mar 29 from St. Louis to Ontario, returning Fri, Apr 3, priced at $455 found 17 hours ago

Wed, Jun 17 - Wed, Jun 24

STL

St. Louis

ONT

Ontario

$487 Roundtrip, found 5 days ago

$487

Roundtrip

found 5 days ago

Select Delta flight, departing Wed, Jun 17 from St. Louis to Ontario, returning Wed, Jun 24, priced at $487 found 5 days ago

Wed, Jun 17 - Wed, Jun 24

STL

St. Louis

ONT

Ontario

$522 Roundtrip, found 5 days ago

$522

Roundtrip

found 5 days ago

Select Delta flight, departing Wed, Jun 17 from St. Louis to Ontario, returning Wed, Jun 24, priced at $522 found 5 days ago

Wed, Jun 17 - Wed, Jun 24

STL

St. Louis

ONT

Ontario

$527 Roundtrip, found 5 days ago

$527

Roundtrip

found 5 days ago

Select Delta flight, departing Wed, Jun 17 from St. Louis to Ontario, returning Wed, Jun 24, priced at $527 found 5 days ago