A troubling AK hand

[Roland32]

I never put myself in a position to get a way from this hand. Should I have check folded flop? ALthough he probably would of checked behind. I think villain played this well, but am confused if I did.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) converter

CO (t1500)
Button (t1480)
SB (t1600)
BB (t1500)
Hero (t1500)
UTG+1 (t1500)
MP1 (t1420)
MP2 (t1500)
MP3 (t1500)

Preflop: Hero is UTG with K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">Hero raises to t80</font>, <font color="#666666">3 folds</font>, MP3 calls t80, <font color="#CC3333">CO raises to t320</font>, <font color="#666666">3 folds</font>, Hero calls t240, MP3 folds.

Flop: (t750) Q[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t300</font>, CO calls t300.

Turn: (t1350) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets t300</font>, Hero calls t300.

River: (t1950) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets t580 (All-In)</font>, Hero calls t580 (All-In).

Final Pot: t3110

Results in white below: <font color="#FFFFFF">
Hero has Kh As (two pair, kings and jacks).
CO has Qd Qs (full house, queens full of jacks).
Outcome: CO wins t3110. </font>

why bet the flop here? you shouldn't have semi-bluffed with three face cards on the river

[adanthar]

I would've folded approximately 4 times in this hand, plus or minus one (I muck the flop twice to be certain).

[Roland32]

I have to include the possibility of medium PP, the sandwhich raise w PP happens alot.