Best way to travel between Poland and Bulgaria

A: Poland

B: Bulgaria

Travel Modes: Price; Distance; Duration; CO2

bus: $1.0; 1954.05 km; 33h 14mins; 58.62 kgs

train: $77.0; 1627.4 km; 25h 54mins; 86.25 kgs

flight: $255.0; 1256.85 km; 5h 17mins; 135.74 kgs

drive: $270.0; 1645.29 km; 18h 25mins; 210.6 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Bus	1954.05 km	33h 14mins	1 BGN	1.0
Train	1627.4 km	25h 54mins	111 BGN	77.0
Flight	1256.85 km	5h 17mins	368 BGN	255.0
Drive	1645.29 km	18h 25mins	389 BGN	270.0

Take Bus from Warsaw to Częstochowa: Time: 4h 51mins Cost: 15 BGN; $ 9.1 - 11.1 USD CO2 Emission: 7.95 kgs
Take Bus from Czestochowa to Sofia: Time: 27h 13mins Cost: 93 BGN; $ 57.9 - 70.7 USD CO2 Emission: 50.64 kgs
Take Train from Central Station to Serdika: Time: 2mins Cost: 1 BGN; $ 0.9 - 1.1 USD CO2 Emission: 0.08 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Poland and Bulgaria is to travel by bus, which will cost about 1 BGN or 0.90 USD.