Air Koryo

National airline of north korea. according to skytrax, the world's single worst airline (only airline with 1 star rating)
blacklisted from european union due to poor safety practices

Person 1: What's the worst airline you've ever been on?

Person 2: Ryanair by far

Person 1: Really? i flew with one much worse when i went to pyongyang

Person 2: what airline is that?

Person 1: Air Koryo. seriously, don't ever fly with air koryo