The cheapest times to fly from CJJ to SFO are

  • March 19th to October 14th (except the weeks of July 30th, August 20th, September 10th, and September 24th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from CJJ to SFO is early April. Prices can be as high as $3480 for Friday flights during early to mid September, or as low as $2112 for Saturday flights around early April.


When to Fly to San Francisco

Flying from Cheongju (CJJ) to San Francisco, CA (SFO) will usually cost between $2328 to $3471 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early April with an average ticket price of $2812. Due to high demand the most expensive time to fly is early to mid September, with an average price of $3456. Planning your trip to low-cost times can easily save you $644 on economy flights and even more on first-class flights. Generally, any price below $3369 can be considered a good price for a round-trip CJJ to SFO flight.

See below for a graph of average weekly prices for the CJJ to SFO route. All prices are for round-trip tickets in USD.

CJJ to SFO Flight Prices

Compared to other flights, the CJJ to SFO flight is more expensive than the average and costs about as much as the average flight leaving from Cheongju-si. The average price per mile (for a direct flight) is $0.37, which is a bit above average.


Flight Prices by Day of the Week

Saturday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to San Francisco, and Mondays are the most expensive days to return to Cheongju-si. Selecting flights on the least expensive days could save you up to $853 (25%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Saturday and returning a week later will cost an average of $2829. Return trip prices are from the SFO to CJJ flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from CJJ to SFO can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 11 hour 7 minutes may not be realistic.


Flight Hacking CJJ to SFO

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from CJJ to SFO — but Champion Traveler does!

Hack #1: Hangzhou (CJJ > HGH > SFO)

  • Price for both tickets: $1083
  • Average savings: $2286 (67.85%)

See CJJ to PEK flights

Hack #2: Beijing (CJJ > PEK > SFO)

  • Price for both tickets: $1132
  • Average savings: $2237 (66.41%)

See CJJ to HGH flights

Hack #3: Jeju (CJJ > CJU > SFO)

  • Price for both tickets: $1167
  • Average savings: $2202 (65.37%)

See CJJ to CJU flights


Flight Questions Answered

Still have questions about flying from CJJ to SFO? We’ve got answers.

Which airlines fly this route?

You can find 7 major airlines flying this route most often: Air China, Asiana, China Eastern, China Southern, Korean Air, Singapore Airlines, United, and potentially more during busy seasons.

How far away is it from San Francisco International Airport to Cheongju International Airport?

The distance between the two airports is roughly 5635 miles or 9069 kilometers.

How long does it take to fly from CJJ to SFO?

The real-world flight time for a nonstop CJJ to SFO flight is about 11 hour 7 minutes.

How many flights go between Cheongju and San Francisco, CA?

It depends on the day of the week and the date, but a typical day might have around 18 available flights from CJJ to SFO.


Airport Location Info


Departing Airport

Origination code CJJ
Origination airport name Cheongju International Airport
City Cheongju
Country South Korea
Latitude 36.7
Longitude 127.5

Return Airport

Destination code SFO
Destination airport name San Francisco International Airport
City San Francisco, CA
Country the United States
Latitude 37.6
Longitude -122.4


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.