Cost of living in Flint, Michigan (United States) is 17% more expensive than in Zaragoza (Spain)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 262 prices entered by 22 different people.
For example, you would need at least €2,231 ($2,546) in Flint, Michigan to maintain the same standard of living that you can have with €1,900 in Zaragoza.