Cheap Flights to San Francisco

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Tips to find the cheapest flights to San Francisco

The cheapest day to fly

Get started finding a cheap flight to San Francisco 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

is the cheapest month to fly to San Francisco. 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 Francisco. 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 Francisco, 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 Francisco

The lowest price for round-trip flights to San Francisco in 2025 starts from , while one-way tickets start from . 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 Francisco. 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 Francisco

are just some of the airlines that can typically offer cheap tickets to San Francisco. 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 Francisco and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for San Francisco, 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 Francisco. 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 Francisco 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 Francisco

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 Francisco.

Stopover savings

The cheapest tickets to San Francisco are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to San Francisco. 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 Francisco 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 Francisco. Simply download the free Expedia app to your smart device and activate San Francisco 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 Francisco. 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 Francisco?
The best months to find cheap flights to San Francisco are typically during the off-peak season, when demand is lower. To save money, avoid flying during public holidays and school breaks.
Which US cities fly direct to San Francisco?
Nonstop flights take the hassle out of travel. When searching on Expedia, choose "Direct flights only" and we'll show you the available options to fly to San Francisco.
How to find a cheap flight to San Francisco?
To snag cheap flights to San Francisco, book as early as possible and travel during the low season. Want a handy tip? Fly on a Thursday and you'll save 16% on average compared to those who jet off on a Sunday.* Sign up for price tracking on the Expedia app and we'll let you know 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 Francisco?
Although booking in advance is generally the best way to save money, don't panic if your San Francisco trip is last minute. It's still possible to find cheap flights to San Francisco, especially if your plans have a little leeway. Try changing your dates, exploring different ticket types or jetting out of an alternative hub.
How far in advance should I book a flight to San Francisco?
Secure the departure dates you want and a price that fits your budget by booking your domestic flight to San Francisco up to 28 days in advance. Lock in tickets two to four months ahead if you're traveling to San Francisco from an international destination.**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 Francisco?
Sundays are usually the best day to book a cheap flight to San Francisco, with savings of around 8% on average compared to Fridays. If you purchase tickets on a Friday, be ready 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.
Can I save money by booking a San Francisco trip package?
Bundle your flight and hotel and you could save hundreds of dollars. Better yet, you can add extras like tours and car rentals to your San Francisco flight and hotel package deal. With Expedia, it's simple to organize all your San Francisco travel arrangements in the same place.
Can I change or cancel my flight to San Francisco?
It's often possible to change or cancel your flight to San Francisco. Many airlines let you cancel your ticket for free within 24 hours of booking. However, some flights are non-refundable, and airlines may offer you a credit toward a future trip instead of a direct refund. To secure affordable flights to San Francisco with flexible change policies, check the "No cancel fee" or "Changes included" filters when you search. Looking for more information? Go to our Customer Service Portal.

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*Available to One Key members.