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Not ready to book? to track prices.Find the cheapest flights from San Diego to Los Angeles
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American Airlines flights from San Diego to Ontario
Our best American Airlines deals on San Diego to Ontario flight tickets
United Airlines flights from San Diego to Ontario
Our best United Airlines deals on San Diego to Ontario flight tickets
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How to get the cheapest flight ticket from San Diego to Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Ontario?
The cheapest day to depart on your flight to Ontario is on a Monday when prices can be found for as low as $401. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from San Diego to Ontario for around $454.
What is the cheapest time of day to depart on your flight to Ontario?
In the morning is the cheapest time of day to fly from San Diego to Ontario when you can find flight prices for as low as $371. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $423 on average. Flights to Ontario from San Diego at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest airline that flies from San Diego to Ontario?
American Airlines, Alaska Airlines, and United Airlines are the most popular carriers operating from San Diego to Ontario
What airlines fly to Ontario?
United Airlines, Delta and Alaska Airlines are the top three most popular airlines that fly to Ontario from San Diego according to our data. United Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 5 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.
When to book flights from San Diego to Ontario
Cheap San Diego to Ontario (SAN to ONT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Diego to Ontario
How far is San Diego to Ontario by plane?
The distance between San Diego and Ontario is about 97.3 mi. 4h 14m is a normal flight duration for this route.
When did momondo last update prices for flights from San Diego Airport to Ontario Airport?
Prices for flights from San Diego Airport to Ontario Airport are refreshed on a daily basis.
How many operators does momondo search for flights from San Diego Airport to Ontario Airport?
As of March 2025, there is 1 operator available to choose from for flights from San Diego Airport to Ontario Airport.
How old do you have to be to fly from San Diego Airport to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from San Diego to Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Diego to Ontario is Alaska Airlines (100% of total bookings).
Best airlines flying from San Diego to Ontario
Compare and see reviews for airlines that fly from San Diego to Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $281 | Free Cancellation | Rating 8.0 9,782 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from San Diego to Ontario?
Finding the right flight to Ontario from San Diego is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.
Can I find flights from San Diego to Ontario with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for San Diego to Ontario flights to just show those with flexible booking policies.
How can momondo help me find flights from San Diego to Ontario?
Once you have performed a search for San Diego to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from San Diego to Ontario right now. Can momondo alert me if prices change?
Price alerts on flights to Ontario from San Diego are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.