1. Distance to the airport, and how long it normally takes to get there.
2. Traffic at the hour you are traveling.
Well, did you ever take into consideration the horsepower of the vehicle that takes you there?!?!?
Let me tell you it is crucial to take it into consideration when traveling by tuk tuk !!!
The fact that the tuk tuk looks shiny and new (@ local standards) does not mean it is fast as well…
So when my parents asked me how long they need to get to the airport I had to factor this in as well: 4. Horsepower of tuk tuk.