$49 Find Cheap Southwest Flights from Oakland to Ontario

When to Book Flights with Southwest from Oakland to Ontario

• Is Southwest the cheapest airline to fly with from Oakland to Ontario?

  With an average price of $265 return, Southwest is not the cheapest airline to fly from Oakland to Ontario with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $81 on average.

• What is the cheapest Southwest flight from Oakland to Ontario?

  In the last 3 days, the lowest price for a flight with Southwest from Oakland to Ontario was $97 for a return flight and $48 for a one-way flight.

• Does Southwest fly direct to Ontario from Oakland?

  Yes, Southwest does offer direct flights for the route, with around 20 flights per week.

• What’s the cheapest day of the week to fly from Oakland to Ontario with Southwest?

  On average, the cheapest day of the week to fly from Oakland to Ontario with Southwest is Friday, when prices are around $41. The most expensive day is generally Thursday, where the average price is around $120.

• What’s the cheapest month to fly from Oakland to Ontario with Southwest?

  The cheapest month for Southwest flights to Ontario from Oakland is generally May, where plane tickets cost $129 on average. If possible, try to avoid the most expensive months of January and April, where tickets cost $227 and $322 respectively.