Cheap Flights from Chicago to Jeju City from $957

Frequently Asked Questions

• What are the cheapest flights from Chicago to Jeju City (CHI-CJU)?

  Based on Trip.com data, Cathay Pacific offers one-way fares as low as $957 on Cheapest nonstop routes (e.g. ORD to CJU on Mon, Oct 5), while Cathay Pacific offers Cheapest nonstop round-trips from $2,388 departing on Tue, Sep 8 and returning on Fri, Sep 11.

• Which airlines offer direct flights from Chicago to Jeju City?

  At the moment, you can catch a nonstop flight from Chicago to Jeju City with the following airlines, including: Cathay Pacific Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• When is the best time to book flights from Chicago to Jeju City?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Chicago to Jeju City is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Chicago to Jeju City?

  To find best deals on flights from Chicago to Jeju City, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Oct 5, with one-way flights priced at just $957.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Cathay Pacific.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Jeju City travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Chicago (CHI) to Jeju City (CJU) the cheapest?

  The cheapest months to fly from Chicago to Jeju City is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Chicago to Jeju City on?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Chicago to Jeju City on September 16, 2026 with Cathay Pacific, with prices starting at $671.

• Which airports can I fly into Jeju City from Chicago?

  You can arrive at any of the following airports in Jeju City: Jeju International Airport (CJU). Flights from O'Hare International Airport to Jeju International Airport (ORD-CJU) are by far the most popular option for this route.

• Is there any time difference between Chicago and Jeju City?

  The time difference between Jeju City and Chicago is 15h.

• How do I change or cancel my ticket from Chicago to Jeju City?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Chicago to Jeju City?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Chicago to Jeju City is $1,313. Fares vary by travel date, airline and availability.

• How do I book flights from Chicago to Jeju City on Trip.com?

  Enter Chicago and Jeju City, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.