Cheap Flights from Santa Monica (SMO) to Ontario (ONT)

Popular airlines from Santa Monica, CA (SMO-Santa Monica Municipal) to Los Angeles - Ontario Intl. Airport (ONT)

Find available prices by choosing your travel dates.
Flights from Santa Monica (SMO) to Ontario (ONT)
Origin airport
Santa Monica Municipal
Destination airport
Los Angeles - Ontario Intl.
Distance
49 mi

Santa Monica to Ontario Flights

The cheapest times to fly from Santa Monica to Ontario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Santa Monica to Ontario are during the month of . You can find some of the cheapest flights from Santa Monica to Ontario with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Santa Monica to Ontario

Sunday is one of the best days to book for cheap flights from Santa Monica to Ontario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Santa Monica to Ontario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Santa Monica to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Santa Monica to Ontario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Santa Monica to Ontario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Santa Monica Municipal Airport (SMO) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Discover the latest flight deals from SMO to ONT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SMO to ONT?
The cheapest flights from SMO to ONT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SMO to ONT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SMO to ONT. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Santa Monica Municipal Airport (SMO) to Los Angeles - Ontario Intl. Airport (ONT)?
There are no daily direct flights from Santa Monica Municipal Airport (SMO) to Los Angeles - Ontario Intl. Airport (ONT). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you’ll be cruising above the clouds in no time.
What day of the week has the most flights from SMO to ONT?
You’ll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Santa Monica Municipal Airport (SMO) to Los Angeles - Ontario Intl. Airport (ONT)?
To arrive at Los Angeles - Ontario Intl. Airport (ONT) without delays, opt for a flight that leaves Santa Monica Municipal Airport (SMO) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Santa Monica Municipal Airport (SMO) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Waiting until right before your break to book your flight from SMO to ONT generally means paying more. Although you may find some last-minute deals, they aren’t always guaranteed. Keep your travel plans flexible to boost your chances of landing a bargain.
Is it cheaper to book a SMO to ONT flight and hotel package?
You can save money by securing a SMO to ONT flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one place. Once you’ve selected your preferred flights and accommodations, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from Santa Monica Municipal Airport (SMO) to Los Angeles - Ontario Intl. Airport (ONT)?
Typically, it’s possible to reschedule or cancel your SMO to ONT flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline’s policies in your itinerary to see what changes are allowed and whether any costs are involved. You’ll also find more information on our Customer Service portal.

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*Available to One Key members.