- busradar.com coach/burgas/istanbul/
- bus.biletyplus.ru raspisanie/burgas/stambul
- bus.tutu.ru raspisanie/gorod_Burgas/gorod_Stambul/
- checkmybus.com istanbul-airport/burgas
- ardatur.bg en/stations/in/Istanbul Bus Station/
- nisikli.com.tr onlinebilet/
- bus-bilet.com schedule/burgas/stambul
- Unitiki.com buses/burgas/stambul