If you are looking to avoid the hustle and bustle of Pearson, we have provided a few suggestions below of smaller airports with more family friendly prices.
Fly Allegiant direct to Myrtle Beach.
https://www.allegiantair.com/
This airport offers many reasonable options to choose from.
American, Delta, United, and Southwest etc. offer flights to Myrtle Beach with 1 stop.
Fly the always cheap Spirit Airlines, this is a direct flight to Myrtle Beach.
https://www.spirit.com/en/flights-from-detroit-to-myrtle-beach