Got a pop up add that Southwest is starting non- stop service to Grand Rapids in early August from STL, DEN, ORL and BWI (Baltimore). Teaser fares for like $70 each way,I recommend over connecting at ORD, that's a crap shoot at best.
In Minneapolis check out Lansing as Delta matches Sun Country for $200, Dan Lucas give the airport a thumbs up. At least from MSP it's been extravagant to get a ticket into TVC this summer.
Makes me miss STL as we used to fly a big prop non-stop into GRR on TWA. Once the cabin wouldn't pressurize so they just flew low!
Definite Maybe for me.
Buck