Cheap flights from Oakland to Ontario

One-way fares from $72 · OAK → ONT · prices found by travellers in the last 48 hours

Compare all dates Ontario → Oakland
Cheapest fare
$72

Southwest Airlines · Wed, Jan 20

Cheapest month
January

from $72

Direct flights
Yes

Southwest Airlines

Flight time
1h 15m

590 km

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Cheapest month to fly from Oakland to Ontario

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $84
  2. December 2026 $84
  3. January 2027 Cheapest $72
  4. March 2027 $85
  5. May 2027 $423
  6. June 2027 $430
  7. July 2027 $176

Plan the rest of your trip to Ontario

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in OntarioCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in OntarioTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in OntarioPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in OntarioCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Oakland to Ontario

Oakland (OAK) and Ontario (ONT) are about 590 km apart. Direct flights take around 1h 15m, and recent direct fares were with Southwest Airlines. Over the next few months, one-way fares start from $72, and January 2027 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Oakland to Ontario?

The cheapest one-way fare we've seen recently is $72 with Southwest Airlines, departing Wednesday, January 20, 2027. Over the coming months, the lowest fare in each month ranges from $72 to $430.

What is the cheapest month to fly from Oakland to Ontario?

January 2027 currently has the lowest fares, from $72 one way.

Are there direct flights from Oakland to Ontario?

Yes. Recent direct fares were with Southwest Airlines.

How long is the flight from Oakland to Ontario?

A direct flight takes about 1h 15m. Oakland and Ontario are around 590 km apart.

Which airlines fly from Oakland to Ontario?

Recent fares on this route were with Southwest Airlines and Alaska Airlines.

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