The cheapest times to fly from CJU to ORD are

  • July 2nd to August 5th (except the week of July 16th)
  • October 29th to March 4th (except the week of January 1st)

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 CJU to ORD is mid November. Prices can be as high as $6382 for Saturday flights during late October, or as low as $837 for Tuesday flights around mid November.


When to Fly to Chicago

Flying from Jeju (CJU) to Chicago, IL (ORD) will usually cost between $1112 to $4522 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid November with an average ticket price of $1145. Due to high demand the most expensive time to fly is late October, with an average price of $3718. Planning your trip to low-cost times can easily save you $2573 on economy flights and even more on first-class flights. Generally, any price below $1703 can be considered a good price for a round-trip CJU to ORD flight.

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

CJU to ORD Flight Prices

Compared to other flights, the CJU to ORD flight is more expensive than the average and costs more than the average flight leaving from Jeju-si. The average price per mile (for a direct flight) is $0.16, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to ORD, and Thursday the cheapest day to fly back into CJU. Saturdays 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 $1550 (40%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1578. Return trip prices are from the ORD to CJU 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 CJU to ORD can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 13 hour 11 minutes may not be realistic.


Flight Hacking CJU to ORD

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 CJU to ORD — but Champion Traveler does!

Hack #1: Busan (CJU > PUS > ORD)

  • Price for both tickets: $925
  • Average savings: $779 (45.71%)

See CJU to GMP flights

Hack #2: Seoul (CJU > GMP > ORD)

  • Price for both tickets: $944
  • Average savings: $759 (44.57%)

See CJU to PUS flights

Hack #3: Beijing (CJU > PEK > ORD)

  • Price for both tickets: $1008
  • Average savings: $695 (40.81%)

See CJU to PEK flights


Flight Questions Answered

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

Which airlines fly this route?

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

How far away is it from Chicago O’Hare International Airport to Jeju International Airport?

The distance between the two airports is roughly 6782 miles or 10915 kilometers.

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

The real-world flight time for a nonstop CJU to ORD flight is about 13 hour 11 minutes.

How many flights go between Jeju and Chicago, IL?

It depends on the day of the week and the date, but a typical day might have around 21 available flights from CJU to ORD.


Airport Location Info


Departing Airport

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

Return Airport

Destination code ORD
Destination airport name Chicago O’Hare International Airport
City Chicago, IL
Country the United States
Latitude 42
Longitude -87.9


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.