Spanish winger Xisco struck twice as Dinamo Tbilisi overturned Llanelli's first-leg Europa League qualifying lead to set-up a tie with KR Reykjavik.
The 1981 European Cup Winners Cup champions powered into a three-goal lead as Dinamo quickly destroyed the Welsh club's 2-1 first-leg lead.
Xisco, Alberto Yague and Soares Robertinho scored for the Georgians before the half-hour mark.
Xisco and Carles Coto struck soon after the break to seal a comfortable win.
Dinamo Tbilisi: Loria, Odikadze, Tomashvili, Kakubava (Homola 25), Rekhviashvili, Koshkadze (Tekturmanidze 63), Kvekveskiri, Xisco (Jigauri 54), Coto, Robertinho, Yague.
Subs Not Used: Nadiradze, Akhalaia, Beraia, Pantskhava.
Booked: Rekhviashvili, Xisco.
Goals: Xisco 5, Yague 10, Robertinho 27, Xisco 50, Coto 55.
Llanelli: Morris, Chris Thomas, Stuart Jones, Surman, Bowen (Holloway 68), Corbisiero (Venables 46), Ashley Evans, Williams, Grist, Griffiths, Follows (Bond 35).
Subs Not Used: Richards, Legg, Orme, Secker.
Ref: Markus Strombergsson (Sweden).