$51 Find Cheap Flights from Oakland to Ontario - Compare and Save

These are the earliest and latest flight times available from Oakland to Ontario:

• Earliest: departs at 5:50 am and lands at 7:11 am
• Latest: departs at 10:25 pm and lands at 11:46 pm.

The flight takes about 1h 21m.

Only Economy Class is available on flights from Oakland to Ontario.

A nonstop flight from Oakland to Ontario takes 1h 21m, covering 361 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Oakland to Ontario range from $258 to $424, with an average of $309 over the past 12 months. Anything below $258 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 80% above the $309 route average. Book 13 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $228 round-trip via Las Vegas Harry Reid Intl (LAS), compared to $310 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

Morning is the busiest departure period on Oakland to Ontario flights, with 50% of flights leaving in that window. Afternoon departures account for 25%, evening flights for 25%, and night flights for 0%.

One-way fares from Oakland to Ontario are currently lower than usual. Average one-way flight prices are about $89, which is 58% below the typical average for this route.

Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

• Fox
• Thrifty
• Europcar
• Dollar
• Alamo

Flights from Oakland to Ontario usually depart from Oakland (OAK) and arrive at Ontario (ONT).

Most connecting flights from Oakland to Ontario pass through Las Vegas Harry Reid Intl (LAS), which handles 100% of one-stop traffic on this route.

Yes. Flexible dates can save you up to 28% on flights from Oakland to Ontario. Thursday is the cheapest departure day at $299 round-trip on average, while Sunday is the most expensive at $411, a difference of $112.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

2 airlines operate flights between Oakland and Ontario. The airlines offering nonstop flights on this route include:

• Southwest
• Frontier

Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Among airlines operating Oakland to Ontario flights:

• Southwest: offers free seat selection
• Frontier: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag and a checked bag in Economy Class
• Frontier: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

A cost-effective and convenient option is Omnitrans bus line 61. It takes about 17 minutes to reach the downtown area from the airport.

Both terminal buildings have dedicated rideshare pick-up areas. From baggage claim, signs on the curbside outside each terminal show the designated pick-up points.