Unable to find information about the schedule of direct flights from
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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 San Diego to Ontario. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
A direct flight is the most convenient and comfortable way to fly from San Diego to Ontario, despite the fact that sometimes flights with transfers can cost significantly less.
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from San Diego to Ontario:
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We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Unable to find information about the schedule of direct flights from
San Diego — Los Angeles
12/07/2025
Departure
Direct flight
UA4723
Starting at $526
Starting at $526
Starting at $190
The San Diego — Ontario route is served by multiple airlines, including United Airlines and Frontier Airlines. This is convenient for those who want the best balance of price, schedule, and travel conditions. Tickets start from $190, and depending on season and promotions, even better deals may appear. With our service, you can easily compare available options and book tickets that match your plans. The variety of carriers allows flexible choices and comfortable travel without overpaying.
The cheapest one-way flight from San Diego to Ontario departs on 12/07/2025, is operated by Frontier Airlines and costs $190
There is no information about the cheapest roundtrip flight from San Diego to Ontario
Fastest flight from San Diego to Ontario takes 1d 4h 47m
There are no direct flights on this route.
The distance between San Diego and Ontario is 155km (96 miles). San Diego and Ontario are in the same time zone
We couldn't find any special offers for flights from San Diego to Ontario
The cheapest flight ticket from San Diego to Ontario according to data for the last 48 hours costs $190
Often the best time to buy tickets from San Diego to Ontario is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from San Diego to Ontario can be found flying in these months: January, December.
The fastest flights from San Diego to Ontario start from 4 hours 47 minutes in the air.
The following airlines operate direct flights on the route San Diego — Ontario: United Airlines
In different months, ticket prices from San Diego to Ontario vary: minimum — $65 (January 2026), maximum — $177 (December 2025). Typically, the flight costs $121–$177.