The cheapest times to fly from OAK to CJU are

  • March 5th to June 24th (except the week of May 7th)
  • July 30th to October 21st (except the week of September 3rd)

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 OAK to CJU is mid April. Prices can be as high as $7008 for Sunday flights during late December, or as low as $1572 for Wednesday flights around mid April.


When to Fly to Jeju-si

Flying from Oakland, CA (OAK) to Jeju (CJU) will usually cost between $1629 to $4575 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid April with an average ticket price of $1732. Due to high demand the most expensive time to fly is late December, with an average price of $3261. Planning your trip to low-cost times can easily save you $1529 on economy flights and even more on first-class flights. Generally, any price below $1943 can be considered a good price for a round-trip OAK to CJU flight.

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

OAK to CJU Flight Prices

Compared to other flights, the OAK to CJU flight is more expensive than the average and costs slightly more than the average flight leaving from Oakland. The average price per mile (for a direct flight) is $0.21, which is below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to CJU, and Tuesday the cheapest day to fly back into OAK. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $1855 (47%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $1894. Return trip prices are from the CJU to OAK 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 OAK to CJU can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 11 hour 28 minutes may not be realistic.


Flight Hacking OAK to CJU

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 OAK to CJU — but Champion Traveler does!

Hack #1: Beijing (OAK > PEK > CJU)

  • Price for both tickets: $1003
  • Average savings: $941 (48.4%)

See OAK to PEK flights

Hack #2: Shanghai (OAK > PVG > CJU)

  • Price for both tickets: $1120
  • Average savings: $823 (42.36%)

See OAK to PVG flights

Hack #3: Hong Kong (OAK > HKG > CJU)

  • Price for both tickets: $1309
  • Average savings: $634 (32.63%)

See OAK to HKG flights


Flight Questions Answered

Still have questions about flying from OAK to CJU? We’ve got answers.

Which airlines fly this route?

You can find 9 major airlines flying this route most often: Alaska, American, Asiana, Cathay Pacific, Delta, Hawaiian, JAL, Korean Air, United, and potentially more during busy seasons.

How far away is it from Jeju International Airport to Metropolitan Oakland International Airport?

The distance between the two airports is roughly 5827 miles or 9378 kilometers.

How long does it take to fly from OAK to CJU?

The real-world flight time for a nonstop OAK to CJU flight is about 11 hour 28 minutes.

How many flights go between Oakland, CA and Jeju?

It depends on the day of the week and the date, but a typical day might have around 19 available flights from OAK to CJU.


Airport Location Info


Departing Airport

Origination code OAK
Origination airport name Metropolitan Oakland International Airport
City Oakland, CA
Country the United States
Latitude 37.7
Longitude -122.2

Return Airport

Destination code CJU
Destination airport name Jeju International Airport
City Jeju
Country South Korea
Latitude 33.5
Longitude 126.5


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.