Best way to travel between

Riga
Warsaw
Travel Modes
Price
Distance
Duration
CO2
bus
$33.79
681.2 km
14h 15mins
20.44 kgs
 
drive
$100.0
674.96 km
9h 44mins
86.39 kgs
 
flight
$124.0
611.52 km
4h 45mins
66.04 kgs
 
N/A
 
 
 
 
 
Tranport Distance Time(hrs) Cost(local) Cost(usd)
Bus 681.2 km 14h 15mins 105 PLN 33.79
Drive 674.96 km 9h 44mins 310 PLN 100.0
Flight 611.52 km 4h 45mins 384 PLN 124.0
Take Bus from Riga to Augustow
Time: 8h 30mins Cost: 74 PLN; $ 21.6 - 26.4 USD CO2 Emission: 12.8 kgs
Take Bus from Augustów to Warsaw
Time: 4h 43mins Cost: 30 PLN; $ 8.8 - 10.8 USD CO2 Emission: 7.64 kgs
Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Riga and Warsaw is to travel by bus, which will cost about 105 PLN or 30.60 USD.