Route notes
Why this routing works
This routing is structured as an open-jaw round-trip: fly from Denver into Cape Town, make the surface transfer to Johannesburg, then fly back to Denver from there. That setup avoids backtracking within South Africa and works well when the trip is split between two cities over a short two-week window.
Because the Cape Town to Johannesburg segment is overland rather than ticketed as a flight in this route, the international air ticket is built around the long-haul sectors only. That can simplify the flight structure while leaving the middle section flexible on timing, which is useful when the trip is anchored around a fixed departure month like August.
In business class, this is a relatively compact long-haul itinerary with just one international arrival point in South Africa and a different departure point on the way home. The sold range of USD 3,319 to 5,063 reflects that it is a two-week round-trip rather than a longer multi-continent ticket, while still using business-class pricing.