It seems to me that they logically would, since they have no need to fly upside down like an aerobatic plane would (so they would not need a symmetric airfoil for any conceivable reason). That being said, is that correct, and does anyone have a link to a reliable source where that is stated?
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1$\begingroup$ Look at pictures of wings. $\endgroup$ – GdD Sep 10 at 12:38
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$\begingroup$ Related: Why does the wing root of the A330 have a pronounced twist? $\endgroup$ – ymb1 Sep 10 at 13:07
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I think it's safe to say that all passenger planes use cambered airfoils, although I wouldn't be surprised if someone finds a case of an aerobatic plane being used to carry a paying passenger, just to prove me wrong.
There's a fairly comprehensive list here. You'd have to look them up to be sure, but many of them use codes that indicate thickness and camber. For example, the first digit of a NACA airfoil is the camber.
