Cheap Flights from Ontario (ONT) to San Carlos (SQL)

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to San Carlos, CA (SQL)

Alternative airports near San Carlos

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Francisco Intl. SFO. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $290
SFO
San Francisco Intl.
Cheapest
Average driving time to city center16 min
Flights from $290
Select flight to Norman Y. Mineta San Jose Intl. SJC. Average driving time to city center is 26 minutes. Flights from $329
SJC
Norman Y. Mineta San Jose Intl.
Average driving time to city center26 min
Flights from $329
Select flight to Oakland Intl. OAK. Average driving time to city center is 32 minutes. Flights from $309
OAK
Oakland Intl.
Average driving time to city center32 min
Flights from $309

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to San Carlos Airport (SQL) cost?
Secure a cheap one-way flight or cheap return flight from Los Angeles - Ontario Intl. Airport (ONT) to San Carlos Airport (SQL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to San Carlos Airport (SQL)?
Planning your trip for is a great way to save, as it's the cheapest month for flights between ONT and SQL. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to San Carlos Airport (SQL)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest ONT to SQL flight.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to San Carlos Airport (SQL)?
You'll need to hop on a flight with a layover when traveling from Los Angeles - Ontario Intl. Airport (ONT) to San Carlos Airport (SQL). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from ONT to SQL?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to San Carlos Airport (SQL)?
To avoid possible delays on the Los Angeles - Ontario Intl. Airport (ONT) to San Carlos Airport (SQL) route, fly before 3 PM. Later departures are 22% more likely to be canceled.**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.
What airports do you fly into for San Francisco from Los Angeles - Ontario Intl. Airport (ONT)?
Los Angeles - Ontario Intl. Airport (ONT) offers direct flights to San Francisco. These are a few of the airports you can fly to without stopovers:

  • San Francisco Intl. Airport (SFO)
  • Norman Y. Mineta San Jose Intl. Airport (SJC)
  • Oakland Intl. Airport (OAK)

Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to San Carlos Airport (SQL) last-minute?
Holding off until just before your departure to book a ticket from ONT to SQL generally means paying more. While it's possible to find some last-minute deals, there's no guarantee. Allow some flexibility in your schedule to boost your chances of getting a bargain.
Is it cheaper to book an ONT to SQL flight and hotel package?
Booking an ONT to SQL flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our impressive range of hotels and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to San Carlos Airport (SQL)?
If you reserved your ONT to SQL flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

Travel information

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
San Carlos
Distance
353 mi

Book with confidence

Book with confidence

Ontario to San Carlos Flights

The cheapest times to fly from Ontario to San Carlos

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 Ontario to San Carlos are during the month of . You can find some of the cheapest flights from Ontario to San Carlos with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to San Carlos

Sunday is one of the best days to book for cheap flights from Ontario to San Carlos: 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 Ontario to San Carlos

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 Ontario to San Carlos 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 Ontario to San Carlos 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 Ontario to San Carlos 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.

 

Ontario to San Carlos Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.