$351 Cheap Delta flights Oakland (OAK) to Ontario (ONT)

View $351 flight on Sat, May 30, 2026Opens in a new window

$351 Cheap Delta flights Oakland (OAK) to Ontario (ONT)

Prices were available within the past 7 days and start at $351 for one-way flights and $629 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, May 30 - Sat, Jun 13
OAK
Oakland
ONT
Ontario
$629 Roundtrip, found 3 days ago
$629
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, May 30 from Oakland to Ontario, returning Sat, Jun 13, priced at $629 found 3 days ago

Find the cheapest month to fly from Oakland (OAK) to Ontario (ONT)

September is typically the cheapest month to fly

From $77 - $512 per traveler.

Travel information

Origin airport
Oakland Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, Delta, Southwest Airlines
Popular airline
Southwest Airlines
Distance
578 km
Average flight time
1 hour 20 mins

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