Istanbul Sabiha Gökçen International Airport is located some 32 km southeast of the city center, airport serves as the hub for AnadoluJet and Pegasus Airlines.
The facility is named after Sabiha Gökçen, the adoptive daughter of Mustafa Kemal Atatürk and the first female fighter pilot in the world. Although Istanbul Airport, located 63 km (39 mi) west of the European side of Istanbul, is larger, Sabiha Gökçen is still one of the largest airports in the country.
I have been traveling via Sabiha Gokcen Airport several times flying in and out routes like Tbilisi, Trabzon, Izmir, Barcelona, and more. Most of the time flying Pegasus Airlines.
The airport was built because Atatürk International Airport (located on the European side) was not large enough to meet the booming passenger demands (both domestic and international).
When traveling to or from Sabiha Gocken airport see How to Get around Istanbul for cheap with this ride-sharing Taxi app