Route notes
Why this routing works
This itinerary uses an open-jaw structure in Europe: fly from Detroit to Barcelona, travel overland to Zurich, then resume the ticket from Zurich to Milan and onward to Miami. That setup works well when one segment is intentionally handled on the ground instead of by air.
With 14 nights in Barcelona inside a 3-week total trip, the pacing is weighted toward a longer first stop followed by shorter onward connections. The overland move between Barcelona and Zurich breaks up the flight sequence and can simplify the route when the next ticketed air segment starts in a different city.
Ticketing-wise, this is a multi-stop economy itinerary rather than a simple roundtrip, combining a transatlantic outbound, an open-jaw section, and a return to the USA via Miami. For July departures, keeping the sequence fixed as Detroit–Barcelona // Zurich–Milan–Miami helps frame the trip around one non-flight segment while preserving onward air connections.
At the sold range of $1,333 to $1,539 in economy, this route is positioned as a straightforward custom itinerary for travelers who want one long stay, one overland transfer, and a final intra-Europe hop before crossing back to the US.