$24 Cheap Flights to San Carlos, CA

View $24 flight on Sat, Jul 19, 2025Opens in a new window

Popular airlines to San Carlos

How much is the cheapest flight to San Carlos?

Prices were available within the past 7 days and start at $24 for one-way flights and $48 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Aug 2 - Sat, Aug 9
SAN
San Diego
SFO
San Francisco
$48 Roundtrip, just found
$48
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 2 from San Diego to San Francisco, returning Sat, Aug 9, priced at $48 just found
Southwest Airlines
Thu, Jul 17 - Sun, Jul 20
SAN
San Diego
SFO
San Francisco
$57 Roundtrip, just found
$57
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Jul 17 from San Diego to San Francisco, returning Sun, Jul 20, priced at $57 just found
Spirit Airlines
Fri, Jul 18 - Sun, Jul 20
SAN
San Diego
OAK
Oakland
$58 Roundtrip, just found
$58
Roundtrip
just found
Select Spirit Airlines flight, departing Fri, Jul 18 from San Diego to Oakland, returning Sun, Jul 20, priced at $58 just found
Alaska Airlines
Thu, Jul 17 - Tue, Jul 22
SAN
San Diego
SFO
San Francisco
$77 Roundtrip, just found
$77
Roundtrip
just found
Select Alaska Airlines flight, departing Thu, Jul 17 from San Diego to San Francisco, returning Tue, Jul 22, priced at $77 just found
Hawaiian Airlines
Wed, Sep 17 - Sat, Oct 4
PAE
Seattle
SFO
San Francisco
$137 Roundtrip, found 12 hours ago
$137
Roundtrip
found 12 hours ago
Select Hawaiian Airlines flight, departing Wed, Sep 17 from Seattle to San Francisco, returning Sat, Oct 4, priced at $137 found 12 hours ago

Find the cheapest month to fly from Columbus (CMH) to San Francisco (SFO)

February is typically the cheapest month to fly

From $158 - $437 per traveler.

Graph displaying average flight prices per month

Tips to find the cheapest flights to San Carlos

The cheapest day to fly

Get started finding a cheap flight to San Carlos on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

The cheapest month to fly

August is the cheapest month to fly to San Carlos. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to San Carlos. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute.

The most affordable time to book a flight

Typically, a Sunday can be the cheapest time to book a flight to San Carlos, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation.

The cheapest round-trip tickets to San Carlos

The lowest price for round-trip flights to San Carlos in 2025 starts from from $48, while one-way tickets start from from $24. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to San Carlos. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to San Carlos

Frontier Airlines, Southwest Airlines, United, Spirit Airlines, Alaska Airlines, Hawaiian Airlines are just some of the airlines that can typically offer cheap tickets to San Carlos. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to San Carlos and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for San Carlos, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to San Carlos. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.

Save with a package

With Expedia's amazing package deals, you could save hundreds of dollars by booking your San Carlos plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving.

Date flexibility for the cheapest flights to San Carlos

If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to San Carlos.

Stopover savings

The cheapest tickets to San Carlos are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to San Carlos. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.

Get Expedia's Price Drop Protection

Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference*. This gives you peace of mind that you're getting one of the cheapest flights to San Carlos for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.

*Terms apply.

Use our Price Tracking feature

Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to San Carlos. Simply download the free Expedia app to your smart device and activate San Carlos flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.

Book with Expedia

As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to San Carlos. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.

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

What month is the cheapest to fly to San Carlos?
July is typically the cheapest month for flights to San Carlos*. Look out for affordable flights during this time as you could snag a good deal. *Cheapest month to fly is based on the month with the cheapest flight found on Expedia.com in the next 330 days.
Which US cities have the cheapest flights to San Carlos?
Get cheap flights to San Carlos from Los Angeles, San Diego and New York. These cities usually offer the best fares to this destination. But keep in mind that seasonality, demand and stopovers will also have an impact on rates, so stay flexible and book when you see a bargain.
Which US cities fly direct to San Carlos?
Choose from 64 US destinations offering direct flights to San Carlos. When you book on Expedia, click on the "Direct flights only" filter to find nonstop options. Fly to San Carlos from any of these top cities:

  • Los Angeles
  • San Diego
  • New York
  • Seattle
  • Las Vegas

How to find a cheap flight to San Carlos?
To snag cheap flights to San Carlos, book in advance or visit during the off-peak months of December and January. Want another tip? Jet off on a Thursday and save around 16% on average compared to traveling on a Sunday.* Opt to receive price alerts on the Expedia app and we'll update you as soon as your fares drop.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to San Carlos?
Although booking in advance is usually the easiest way to save cash, don't worry if your San Carlos trip is last minute. You can still find cheap flights to San Carlos, especially if your plans have a little leeway. Try changing your dates, exploring different ticket types or departing from another hub.
How far in advance should I book a flight to San Carlos?
To nab some of the biggest savings on domestic journeys, book your flight to San Carlos 28 days ahead of your travel dates. For international flights, it's two to four months in advance. This boosts your chances of getting the departure dates and times you want.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to San Carlos?
Sundays are usually the best day to book a cheap flight to San Carlos, where you can save 8% on average compared to Fridays. If you decide to buy tickets on a Friday, expect to pay a higher price as this is typically the most expensive day.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to San Carlos?
San Carlos is connected to 121 airports globally through 51 carriers, with San Francisco Intl. Airport (SFO) as its primary gateway. Take your pick of these well-known airlines to San Carlos when planning your trip:

  • United Airlines
  • Alaska Airlines
  • American Airlines
  • Delta Air Lines

Where do you fly into San Carlos?
The main airport when you fly to San Carlos is San Francisco Intl. Airport (SFO), but there are other nearby possibilities like Oakland Intl. Airport (OAK) and Norman Y. Mineta San Jose Intl. Airport (SJC). You can also arrive at San Jose, CA (RHV-Reid Hillview) and San Carlos Airport (SQL) when flying to San Carlos.
How far is the airport from central San Carlos?
Landing at San Francisco Intl. Airport (SFO) puts you approximately 11 mi northwest of the center of San Carlos.
Can I save money by booking a San Carlos trip package?
It's possible to save hundreds of dollars if you lock in a San Carlos flight and hotel package deal on Expedia. And you'll save yourself hassle by having all your travel arrangements in the same place. Try bundling flights and hotels with extras like car rentals and tours for your own personalized San Carlos vacation.
Can I change or cancel my flight to San Carlos?
You can often cancel or change your flight to San Carlos within 24 hours of booking. However, be mindful that some fares are non-refundable. In those cases, you may be issued a credit toward future travel in place of a direct refund. Be sure to check the airline's terms of service in your itinerary for specific details. You can use Expedia's "No cancel fee" or "Changes included" filters during your search to secure cheap flights to San Carlos with flexible change policies. For additional information, visit our Customer Service Portal.
Flights to San Carlos information
Destination airport
San Francisco Intl.
Destination airport IATA code
SFO
Destination city name
San Francisco
Roundtrip price
$48

Trending flights to San Carlos

Prices were available within the past 7 days and start at $24 for one-way flights and $48 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Aug 21 - Thu, Aug 28
LAX
Los Angeles
SFO
San Francisco
$62 Roundtrip, just found
$62
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Aug 21 from Los Angeles to San Francisco, returning Thu, Aug 28, priced at $62 just found

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