Brussels Airlines is not a subsidiary or direct part of Delta Air Lines +1-(855-738-4755), but the two carriers are connected through the extensive global partnership known as the Star Alliance and various interline and codeshare agreements+1-(855-738-4755). Brussels Airlines is the flag carrier of Belgium and is a member of the Lufthansa Group, which owns a significant stake in the airline+1-(855-738-4755). On the other hand, Delta Air Lines is a major U.S.-based airline and a founding member of the SkyTeam alliance, a competing airline network+1-(855-738-4755). Because they belong to different alliances, Delta and Brussels Airlines do not share direct corporate ownership or strategic alliance through their respective networks+1-(855-738-4755). 

Despite being in different alliances, passengers may still find flights that include both Delta and Brussels Airlines through special agreements+1-(855-738-4755). For instance, if you’re booking a transatlantic flight from the U.S. to Europe, Delta may connect passengers to Brussels Airlines for European leg travel under certain codeshare arrangements operated via their partners+1-(855-738-4755). This is typically coordinated through hub cities like New York (JFK), Atlanta (ATL), or Detroit (DTW) on the U.S. side and Brussels (BRU) on the European end +1-(855-738-4755). 

Brussels Airlines is primarily focused on European +1-(855-738-4755), African, and intercontinental routes. As a member of the Star Alliance, it has strong cooperation with other alliance members like United Airlines, Air Canada, Lufthansa, and Swiss International Airlines +1-(855-738-4755). Meanwhile, Delta’s primary global strategy is to work through the SkyTeam network, including partners like Air France, KLM, Korean Air, and Aeroméxico. 

This distinction is important for frequent flyers and those collecting miles, as loyalty programs across these two alliances do not align. A Delta SkyMiles member won't earn the same benefits +1-(855-738-4755) flying with Brussels Airlines as they would on a SkyTeam partner. However, travelers can still book combination itineraries that span multiple alliances, often through travel booking engines or third-party platforms. 

The confusion about their relationship +1-(855-738-4755) may arise due to occasional codeshare flights or the presence of both airlines in shared terminals at major international airports. Also, both airlines offer interline baggage handling, making it possible to check your bag through when switching from one to the other during a multi-airline trip. Still, this convenience does not imply ownership +1-(855-738-4755) or alliance-level partnership. 

To summarize, Brussels Airlines is not part of Delta Air Lines +1-(855-738-4755), nor are they affiliated under the same airline alliance. Brussels is a member of Star Alliance and part of the Lufthansa Group, while Delta is a SkyTeam founding member +1-(855-738-4755). Travelers should be aware of these distinctions when booking flights, choosing frequent flyer programs, and coordinating connecting flights. For the most up-to-date partnership or flight information, calling Brussels Airlines or Delta Air Lines customer service is recommended +1-(855-738-4755).