Stuttgart STR to Porto OPO flight with Eurowings

KLM Cityhopper is the regional airline subsidiary of KLM Royal Dutch Airlines, headquartered in Haarlemmermeer, Netherlands, and based at Amsterdam Airport Schiphol. Established in 1991 from the merger of NLM CityHopper and Netherlines, it operates scheduled European feeder services on behalf of KLM, connecting smaller cities and regional airports to KLM's main hub. As an affiliate of SkyTeam, KLM Cityhopper operates a fleet primarily consisting of Embraer E-Jet aircraft, including the Embraer 175, 190, and E195-E2 models. It serves numerous inter-European destinations, playing a vital role in KLM's regional and international network.

There are several entities named "Airmax" in the aviation industry, making it difficult to provide a single, definitive description. One prominent "Airmax" is Airmax Cargo, a cargo airline operating between the United States and Peru since 2003. They offer three weekly flights on Boeing 767 aircraft between Miami and Lima, with connections to other major destinations through interline agreements. Airmax Cargo specializes in general, perishable, and dangerous goods, offering services like charter flights and express delivery. Another is AirMAX International, a logistics service provider based at JFK International Airport, founded in 2003. They offer tailored cargo and courier solutions, including air charter services, express services, and supply chain management, serving global corporations and small businesses. Additionally, "AirMAX Flight Management System" refers to specialized software for the aviation industry, designed to streamline flight booking, scheduling, and customer management for airlines and private aviation companies. There's also Max Air, a Nigerian airline operating domestic and international passenger flights with a fleet including Boeing 737 and 747 aircraft.