Question : How long are most people's visits to Medellin when they fly in from Buenos Aires?
Answer : Of course you're not most people, but if you were, you'd stay roughly 17 days.
Question : Can you cut down on flight costs by changing the day of the week you travel to Medellin?
Answer : In February, Tuesday is your lowest-cost day to fly. Having flexibility in your travel plans means you can save, so be sure to plan ahead when possible.