This airport is at the European side of İstanbul and the west of Bolu. It takes around 4 hours to reach to Bolu by highway considering the traffic jam in İstanbul.
If you are planning to land in İstanbul, please consider the Sabiha Gökçen airport below
This airport is at the Asian side of İstanbul and the west of Bolu.
This airport is the closest airport to Bolu and it takes around 2,5 hours to reach to Bolu by highway.
You do not have to consider the traffic jam in İstanbul for this airport since it is outside İstanbul.
If you are planning to land in İstanbul, we recommend you to use this airport unless you would like to stay in İstanbul a night before coming to Bolu.