I presently work in West Bloomington and live about a mile from Bethel and work an evening shift, so ave to travel these roads all of the time.
You say your flight time changed? So you will be at the airport (about now I take it?)
Take Highway 5 (also known as OldFort Road and 7th street, depending on where you are) north from the airport, then take Snelling Ave OR Lexington Ave north off of that and just stay on that til you reach County Rd E and turn left.
Yes, you will run into heavy traffic. Lexington would be better than Snelling because of the antique car show at the state fairgrounds this weekend, but Como Park is also on Lexington Ave. Both routes will be scenic; both routes will be backed up in places (Lexingtons' worst spots are Lexington and Larpentuer and Lexington and Co. Rd. B; whereas Snelling will be backed up in the road construction area from Larpenter to Co. Road B). Snelling is wider than Lexington, 2 lanes each direction vs. Lexingtons' 1 lane each way plus turn lane.
Stay off the freeway! The locals will all be on the roads trying to get "Up North" from about 12 noon on Friday because the weather is nice.
I hope you get a chance to see this before you drive to Bethel!