I would just in principle. The supposed return of the ill gotten gains of the collusion results in potentially nothing to the ones that paid the ticket prices. Further, the collusion indicated was the equivalent of $0.03 a flight per ticket, which if you are going to collude, you wouldn't take the chance of getting nailed for such a paltry sum. Minimal gain, large downside, not going to happen. The class action lawyers didn't represent the class, they represented themselves, and got enough shakedown money out of the airlines to go away, not even attempting to make the class whole.