There were 2 interview process including F2F in your location and online with the headquarter. F2F interview duration varies depends on the person and the experiences that you have. Both didn't take too long and the atmosphere is between formal and informal.
I applied online. I interviewed at Korean Air (Los Angeles, CA) in May 2023
Interview
Fluent Korean language skill is highly preferred. Interview process went smoothly in Korean language. They ask you about the past work experiences and why you fit for this job, desired salaries etc..
Interview questions [1]
Question 1
Tell me about your strengths and weaknesses. How do you deal with stressful circumstances?