Cheap Flights from Sterling (SQI) to San Francisco (SFO)

Popular airlines from Sterling, IL (SQI-Whiteside County) to San Francisco Intl. Airport (SFO)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Frequently asked questions

How much does a flight from Sterling, IL (SQI-Whiteside County) to San Francisco Intl. Airport (SFO) cost?
Lock in a cheap one-way flight or cheap return flight from Sterling, IL (SQI-Whiteside County) to San Francisco Intl. Airport (SFO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Sterling, IL (SQI-Whiteside County) to San Francisco Intl. Airport (SFO)?
Planning your getaway for is a great way to save, as it's the cheapest month for flights between SQI and SFO. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Sterling, IL (SQI-Whiteside County) to San Francisco Intl. Airport (SFO)?
To find the cheapest airline flying from SQI to SFO, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Sterling, IL (SQI-Whiteside County) to San Francisco Intl. Airport (SFO)?
Direct flights from Sterling, IL (SQI-Whiteside County) to San Francisco Intl. Airport (SFO) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SQI to SFO?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary 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 Sterling, IL (SQI-Whiteside County) to San Francisco Intl. Airport (SFO)?
To land at San Francisco Intl. Airport (SFO) without delays, book a flight that takes off from Sterling, IL (SQI-Whiteside County) before 3 PM. The likelihood 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 Sterling, IL (SQI-Whiteside County) to San Francisco Intl. Airport (SFO) last-minute?
Last-minute bookings from SQI to SFO are usually more expensive. To secure the lowest rates, start looking for flights well ahead of time. That being said, if you can play around with your travel dates, you may land a cheap fare right before your trip.
Is it cheaper to book a SQI to SFO flight and hotel package?
Compared with arranging hotels and flights separately, booking a SQI to SFO flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one easy place takes the hassle out of travel planning. Just secure your flights and choose from our extensive range of hotels, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Sterling, IL (SQI-Whiteside County) to San Francisco Intl. Airport (SFO)?
If you reserved your SQI to SFO flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

Travel information

Origin airport
Whiteside County
Destination airport
San Francisco Intl.
Distance
1751 mi

Book with confidence

Sterling to San Francisco Flights

The cheapest times to fly from Sterling to San Francisco

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

 

The best time to book a flight from Sterling to San Francisco

Sunday is one of the best days to book for cheap flights from Sterling to San Francisco: 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 Sterling to San Francisco

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 Sterling to San Francisco in 2026. 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 Sterling to San Francisco 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 Sterling to San Francisco 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.

 

Sterling to San Francisco Flights

Explore a world of travel with Expedia

*Available to One Key members.