I did it last week and it was $50 vs. $65 for an airport limo. And the SUV was actually an airport limo car, with the driver driving for Lyft on the side.
We don't know where this guy is going or when (surge pricing) so it is hard to know costs. Sure you can check the price for uber Black or Lyft and then compare it to the airport limo fare. Given that they are a family and may have quite a lot of stuff they will have to make sure they order a big enough car.