$979 Cheap Flights from San Francisco (SFO) to Cheongju (CJJ)

View $979 flight on Tue, May 6, 2025Opens in a new window

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Cheap Flights from San Francisco to Cheongju (SFO-CJJ)

Prices were available within the past 7 days and start at $979 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from San Francisco (SFO) to Cheongju (CJJ)
Origin airport
San Francisco Intl.
Destination airport
Cheongju Intl.
Distance
5636 mi

San Francisco to Cheongju Flights

The cheapest times to fly from San Francisco to Cheongju

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

 

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

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

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 Francisco to Cheongju in 2025. You can also book with separate airlines for your outbound and return journeys, from $979 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 Francisco to Cheongju 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 Francisco to Cheongju 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.

 

Frequently asked questions

Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to CJJ last minute?
Booking your flight from SFO to CJJ last minute could save you a nice sum if you stumble on a real bargain. However, tickets typically don’t come down in price as the departure date nears. If you hold out, flights could also be booked solid or the best seats taken (don’t get stuck in the middle!). If you want to be on the safe side, book well ahead of the date you want to leave. Remember that some of the most awesome deals can be found up to 12 months in advance. If your favorite carrier hasn’t released its fares yet, check back regularly as offers are updated on Expedia constantly.
What airports do you fly into for Cheongju from San Francisco?
With Cheongju Intl. Airport (CJJ), Suwon (SWU-Suwon Airbase) and Yecheon (YEC) to pick from, flying from San Francisco to Cheongju is a piece of cake. The city’s main hub, Cheongju Intl. Airport (CJJ), is approximately 6 mi north of the center. Besides the price of fares, consider things like train or bus options from the airport and the distance to your hotel when deciding where to land. Get your Cheongju adventure off to a superb start by discovering Sangdangsanseong Fortress and Cheongju National Museum.
Can I change the date of my flight from San Francisco Airport to Cheongju Intl. Airport?
Quickly and easily make changes to your San Francisco Airport to Cheongju Intl. Airport (CJJ) ticket by logging in to the Expedia Trips portal. Before you make any amendments, check the conditions and rules in your itinerary to learn what you’re able to do and if any charges apply. Some airlines charge a change fee per person, on top of any difference in ticket prices. But if you booked in the last 24 hours, you may be able to cancel for free and organize new flights. You can also head to our Customer Service portal for more information and to connect with our Virtual Agent.

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*Available to One Key members.