starting at $146
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Ontario to Oakland. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
A non-stop flight is the most convenient and comfortable way to fly from Ontario to Oakland, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
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You can fly from Ontario to Oakland with Southwest Airlines. It is the only carrier on this route, which makes the choice straightforward. Despite the lack of competition, ticket prices remain affordable: fares start from $146. Our service helps you track price changes, compare by dates, and select the most suitable flight. If you value stability and predictability, flying with Southwest Airlines is a convenient solution. We make it easy to find good deals and ensure a comfortable booking process.
starting at $146
Ontario — Oakland
09/15/2026
Departure
Direct flight
WN690
starting at $292
There are most likely no direct flights on the Ontario — Oakland route
The cheapest flight ticket from Ontario to Oakland according to data for the last 48 hours costs $146
Often the best time to buy tickets from Ontario to Oakland is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Ontario to Oakland can be found flying in these months: September, November, October.
The fastest flights from Ontario to Oakland start from 5 hours 10 minutes in the air.
The following airlines operate direct flights on the route Ontario — Oakland: Southwest Airlines
In different months, ticket prices from Ontario to Oakland vary: minimum — $129 (September 2026), maximum — $358 (July 2027). Typically, the flight costs $157–$184.
Flight prices from Ontario to Oakland are steadily rising: from September 2026 to July 2027, ticket costs increased by 176%. The sooner you book, the better the deal.
The most significant price increase was from September 2026 to January 2027 — up 71%. The best time to fly is September 2026–October 2026, when the average price is $130. In March 2027–July 2027, tickets cost around $257.
Given the rising prices, it's best not to delay your purchase. Flying in September 2026–October 2026 can save you up to 49% compared to the most expensive months.
Price variation across months on this route is 39.2%. Your choice of departure month significantly affects the total flight cost.
The cheapest one-way flight from Ontario to Oakland departs on 09/15/2026, is operated by Southwest Airlines and costs $146
There is no information about the cheapest roundtrip flight from Ontario to Oakland
Fastest flight from Ontario to Oakland takes 5h 10m
There are direct flights on this route 1 day a week: Tu
The distance between Ontario and Oakland is 589km (365 miles). There are 30 direct flights from Ontario to Oakland. Ontario and Oakland are in the same time zone. Flights from Ontario begin at 6:00 AM. The latest flight from Ontario departs at 8:00 PM
We couldn't find any special offers for flights from Ontario to Oakland