If I'm really into it and it's <16 episodes then one day and anything over that then 2-3 days. The only ones where it's gonna take a couple weeks are Chinese historicals as they run >40 episodes. If I'm not liking it but I just want to see how it ends- those can take months as I have to force myself to watch an episode.
My record is 1.5 days to watch Miss Korea (20 eps) from start to finish. I watched the first 45 episodes of Yeah, That's How It Is at an average of around 9 episodes a day to catch up with the airing schedule. At the other extreme is Crash Landing on You with each episode's runtime feeling like a day and a half.
It depends on how much I'm enjoying a drama and how many episodes it has. So it can take me a month to finish it or just some weeks. But if I'm REALLY into it and has less than 15 episodes, I can finish it in less than 2 days.
Depends on the length, the time I have, how much I'm enjoying it and etc. I've binged a full drama in a day before. I'd say it would average around 2-4 weeks for 16 episode Korean drama, however it often varies as I tend to rotate 7+ dramas at once without a schedule for the most part.
Like everyone else said, depends on length of drama and how into I am, anything from couple of days to weeks to months :D depends on what I’m watching it on too - Netflix ones are always faster than Viki because I get sick of the ads! Maybe I should just pay for it lol
If I’m really into a typical drama that lasts 15 episodes I can finish it with in 2 days but if it’s a long historical drama drama I probably won’t be finishing it until 4-5 days. I also go into periods where I force myself to finish some of the dramas I have on hold and that takes me a few months or sometimes a year.