FAQs
If you are US passport holder, you will still need to apply for an online visa. This will take a few minutes and is valid for a 180 days.
official site: https://www.evisa.gov.tr/
(if this link does not work, there are other websites where you can get the visa)
You can also get visa on arrival to Istanbul International Airport, follow the information in the link below. However, keep in mind that this may have a long line.
https://liveandletsfly.com/istanbul-visa-on-arrival/
For all the days along the way