snomasterBeartooth Summer Session is the first week of June!
Snowbird is your best lift access bet, though at that time they will likely only be open on weekends. There's no park, though a few jumps are always around.
If you aren't seeking chairlifts your options are much healthier to ski in May. It will still be prime time skiing up high in the Tetons and 14ers around Colorado. But… achieving that sort of mission requires the right gear, partners, knowledge, and ambition.
stupendous-manTimberline will be open, the other two will be closed. basically park only though, the groomers will be shit
will_powderFor a more laid back trip you could go to Sunshine and stay in Banff for the nightlife. Super fun in the spring, skiing is really awesome and the park is mad vibes.
Yes, the Beartooths are going off this year. We are holding the Beartooth Summer Session from June 5-8. The highway is supposed to open in late May, I would go ski it then. Right now they are holding about 150% of normal snowpack. The Beartooths will be skiable well into the summer.
You can ski more than park in late May on Hood. Ride Palmer and go take a canyon lap, just take some common sense with you (dont ski off or into something blind) and go shred.
Also, Sunshine is real dope. I have been there in the winter but I can only assume the spring skiing is great. Banff is a really fun town too.