Route notes
Why this routing works
This 6-week business-class multi-stop itinerary is structured as two flight sectors separated by overland moves: SUN to Madrid, then Lisbon to Oslo, and Copenhagen back to SUN. The open-jaw setup between Madrid and Lisbon, and again between Oslo and Copenhagen, keeps the ticket focused on the long-haul and cross-region flying while leaving flexibility on the surface segments.
The sequencing groups the itinerary into an Iberian section followed by a Nordic section, which is a practical way to reduce backtracking. Flying into Madrid and out of Lisbon lets the route progress in one direction on the ground, then the same logic repeats from Oslo to Copenhagen before the final return to SUN.
With a May departure in the apr-jun season, the timing fits a 6-week trip without compressing the stop order. From a ticketing standpoint, this is a straightforward multi-stop business-class build: four air points on the ticket, with two overland gaps that can be managed separately while preserving the overall route flow.