Hi I have a BZ ticket IAH-IST (5 days layover) - BUD. I also have a IST-ESB-IST (economy ticket) purchased separately. IAH-IST arrives at 10:20 and IST-ESB departs at 14:00. I have several questions:
1. Do I need to clear customs?
2. Is 3 hours and 40 minutes sufficient time?
3. How far part are the international and domestic terminals?
Many thanks.