December travelers from Boston Logan International Airport (BOS) to Indira Gandhi International Airport (DEL) can align trips with seasonal events. In Delhi and nearby regions, December features New Year events, winter cultural festivals, and Christmas markets (notably in upscale hotels and malls), as well as craft bazaars and seasonal light shows in Delhi. Nearby destinations with major attractions include Agra (Taj Mahal winter visits), Jaipur (heritage festivals and lower humidity), Varanasi (cooler riverfront ceremonies), and Amritsar (religious sites). In Boston, December highlights include holiday markets, tree lightings, and concerts in Cambridge and downtown Boston — useful for outbound travelers planning last-minute shopping.