Amsterdam, Netherlands-$523
Athens, Greece $574
Barcelona, Spain $503
Budapest, Hungary $500s - $1,100s
Copenhagen, Denmark $500s - $1,000s
Helsinki, Finland $400s - $1,100s
Lisbon, Portugal $500s - $1,000s
Milan, Italy $568
Oslo, Norway $500s - $1,100s
Paris, France $542
Prague, Czechia $500s - $1,200s
Vienna, Austria $500s - $1,100s
Warsaw, Poland $500s - $2,900s
Boston, MA $164
Denver, CO $178
Fort Lauderdale, FL $114