Cheap Flights from San Carlos (SQL) to San Diego (SAN)

Popular airlines from San Carlos, CA (SQL) to San Diego Intl. Airport (SAN)

Frequently asked questions

How much does a flight from San Carlos Airport (SQL) to San Diego Intl. Airport (SAN) cost?
Secure a cheap one-way flight or cheap return flight from San Carlos Airport (SQL) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from San Carlos Airport (SQL) to San Diego Intl. Airport (SAN)?
is the least expensive month to fly from SQL to SAN. Planning your trip for the off-season is often the key to finding better deals on flights.
Which airlines fly direct from San Carlos Airport (SQL) to San Diego Intl. Airport (SAN)?
While San Carlos, CA (SQL) doesn't offer any direct flights to San Diego Intl. Airport (SAN), other airports have nonstop options. Departing from San Francisco Intl. Airport (SFO) will get you to San Diego without any layovers.
What is the cheapest airline that flies from San Carlos Airport (SQL) to San Diego Intl. Airport (SAN)?
To find the cheapest airline that'll fly you from SQL to SAN, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from San Carlos Airport (SQL) to San Diego Intl. Airport (SAN)?
You'll need to book a flight with a layover when traveling from San Carlos Airport (SQL) to San Diego Intl. Airport (SAN). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from SQL to SAN?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change 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 San Carlos Airport (SQL) to San Diego Intl. Airport (SAN)?
Choose a flight from San Carlos Airport (SQL) to San Diego Intl. Airport (SAN) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures are on average 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.
Is it cheaper to buy a plane ticket from San Carlos Airport (SQL) to San Diego Intl. Airport (SAN) last-minute?
Booking your plane ticket from SQL to SAN shortly before your trip is usually more expensive. However, if you're flexible with your travel times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a SQL to SAN flight and hotel package?
You'll typically save money by securing a SQL to SAN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your ideal accommodations and flights, consider other add-ons like car rentals, tours and activities.
Can I cancel or change the date of my flight from San Carlos Airport (SQL) to San Diego Intl. Airport (SAN)?
In most instances, you can cancel or reschedule your SQL to SAN flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like more information, go to our Customer Service portal.

Travel information

Origin airport
San Carlos
Destination airport
San Diego Intl.
Distance
436 mi

Book with confidence

San Carlos to San Diego Flights

The cheapest times to fly from San Carlos to San Diego

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

 

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

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

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 San Carlos to San Diego 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 San Carlos to San Diego 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 San Carlos to San Diego 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.

 

San Carlos to San Diego Flights

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*Available to One Key members.