Best way to travel between Istanbul, Turkey and Serbia

A: Istanbul, Turkey

B: Serbia

Travel Modes: Price; Distance; Duration; CO2

train: $55.0; 973.64 km; 44h 15mins; 51.6 kgs

bus: $109.0; 1305.15 km; 20h 24mins; 39.15 kgs

flight: $204.67; 817.82 km; 7h 55mins; 88.32 kgs

drive: $220.0; 996.45 km; 13h 39mins; 127.55 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Train	973.64 km	44h 15mins	202 AED	55.0
Bus	1305.15 km	20h 24mins	400 AED	109.0
Flight	817.82 km	7h 55mins	752 AED	204.67
Drive	996.45 km	13h 39mins	808 AED	220.0

Take Train from Aksaray to Otogar: Time: 13mins Cost: 7 AED; $ 1.8 - 2.2 USD CO2 Emission: 0.37 kgs
Take Bus from Istanbul to Sofia: Time: 9h 5mins Cost: 129 AED; $ 31.5 - 38.5 USD CO2 Emission: 16.68 kgs
Take Train from Sofia to Beograd: Time: 33h 44mins Cost: 59 AED; $ 14.4 - 17.6 USD CO2 Emission: 21.74 kgs
Take Bus from Glavna železnička stanica to Slavija: Time: 5mins Cost: 7 AED; $ 1.8 - 2.2 USD CO2 Emission: 0.03 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Istanbul, Turkey and Serbia is to travel by train, which will cost about 202 AED or 49.50 USD.