I just used Google Flights to look at airfare for Zurich. Flying from Minneapolis to Zurich, hopefully next April/May.
If I read it correctly, IcelandAir is (can be) $200 less expensive than other flights.
BUT they have a 1-day layover in Reykjavík.
The $200 savings can pay for a hotel.
Q: is there enough "flavor of Iceland" to be seen in Reykjavík in that short of time?
We could perhaps make it 2 nights but we want to get to our friends that live in Switzerland. Our vacation time is limited, so we don't want to split it up too much.
P.S. Last time we flew to Zurich, we brought a large carton full of USA treats for the family. Books, smores-fixings, ....
I'd hope that there could be a paid luggage storage site at the Reykjavík airport. Do you know that (of course, I can look that up)