We fly in & out of LGB for our DLR trips. We use a car service that I highly recommend to anyone ~ we pay $50 each way and we've always had 5 people with us so that's not bad.
Our drivers name is Ron and his business card says VIP Service (Kim Sontha Transportation). The number is (562) 396-8106 (company number) OR the number where he has always answered is 562-895-6713. We've had a Toyota Highlander & Lexus SUV for our past trips.
Our flights home are always in the evening so we're headed back to LGB during rush hour, Ron always takes city roads during this time, we've never been stuck in traffic.
For our upcoming trip it's just me & my kids, my cousin lives in Irvine so I think I'll ask her if she'll provide our transportation from and to the airport ~ or maybe just one way.