United Airlines is a founding member of the Star Alliance, the largest global airline network. Its primary partners include major international carriers such as Lufthansa, Air Canada, All Nippon Airways (ANA), Singapore Airlines, and Swiss. Other notable members in the alliance include Aegean, Air China, Air India, Air New Zealand, Asiana, Austrian, Avianca, Brussels Airlines, Copa Airlines, Croatia Airlines, EgyptAir, Ethiopian Airlines, EVA Air, LOT Polish Airlines, SAS (though they are transitioning out), Shenzhen Airlines, South African Airways, TAP Air Portugal, Thai Airways, and Turkish Airlines. Being part of this alliance means that United MileagePlus members can earn and redeem miles across all these partner airlines and enjoy reciprocal benefits like lounge access and priority boarding if they hold "Star Alliance Gold" status. This partnership allows United to offer a seamless travel experience to over 1,000 destinations worldwide, making it one of the most powerful networks for international travelers who want to maintain loyalty to a single airline program while exploring the globe.