Chelsea finished top of their Champions League group as Andriy Shevchenko became the second highest scorer in European competition.
Shevchenko opened the scoring for Chelsea
And substitute Shaun Wright-Phillips scored his first goal for the Blues as Levski were swept aside.
Shevchenko finished superbly with the outside of his right boot to open the scoring on 27 minutes.
And Wright-Phillips smashed home from outside the area late on before Levski's Richard Eromoigbe went close.
That was the nearest a competent, but largely toothless, Levski side came to causing Chelsea any problems at Stamford Bridge.
And in the end, Chelsea needed only a draw to claim top spot in Group A as Barcelona beat Werder Bremen to finish as runners up.
But Chelsea were clearly going to leave nothing to chance as they made a fast start. After only 68 seconds, Shevchenko won the ball near the half-way line and played in Arjen Robben, who eventually cut the ball back to the Ukraine striker.
But Shevchenko's shot was well saved by keeper Zhivko Milanov, who later did similarly to beat away a first-half Lampard effort.
Lampard, who was keen to run and shoot whenever the opportunity arose, also found Elin Topuzakov's face a barrier to scoring.
The Levski player was left poleaxed by the England midfielder's effort as Chelsea searched for the opener.
When the goal came, it was unsurprising that it was from Shevchenko on the left flank - as both he and Robben had enjoyed success on that side.
The Dutch winger switched the play from the right, via Lampard and Shevchenko provided the finish from the left-hand side of the box.
It was the Ukraine international's 57th in European competition and leaves him five behind all-time top scorer Gerd Muller.
As Chelsea dominated, Ricardo Carvalho had a shot cleared off the line and Levski managed only one effort of note on the Chelsea goal.
In truth, achieving victory was not a particularly difficult task for the Blues, who were allowed to pass the ball around and create opportunities at will against the visitors.
Levski did not come to defend at all costs, and indeed they looked as though they were not equipped to do so.
As a result, the game was played in an open fashion - and sometimes a little sloppily from the Bulgaria point of view.
And the visitors were fortunate not to concede more as Didier Drogba was unlucky not to earn a penalty after being upended by keeper Bozhidar Mitrev.
Lampard also had a penalty appeal waved away and Mitrev made good saves from Michael Essien and Salomon Kalou.
But he was powerless to prevent Wright-Phillips from doubling Chelsea's advantage with a fizzing drive into the bottom left corner.
Chelsea: Hilario, Ferreira (Diarra 58), Carvalho, Boulahrouz, Bridge, Essien, Ballack, Lampard, Robben (Wright-Phillips 68), Shevchenko (Kalou 68), Drogba.
Subs Not Used: Ashley Cole, Mikel, Geremi, Morais.
Goals: Shevchenko 27, Wright-Phillips 83.
Levski Sofia: Mitrev, Milanov, Tomasic, Topuzakov, Stanislav Angelov, Borimirov, Bardon, Eromoigbe, Nikolay Dimitrov (Baltanov 59), Yovov (Koprivarov 70), Domovchiyski (Georgi Ivanov 75).
Subs Not Used: Mihailov, Hristov, Minev, Ognyanov.
Ref: Alain Hamer (Luxembourg).