Delta Air Lines often offers the most nonstops between Hartsfield-Jackson Atlanta International Airport (ATL) and LaGuardia Airport (LGA) in November, making it a top choice for reliability and frequent departures. JetBlue can provide competitive fares and better inflight amenities on some NYC routes, while American Airlines offers solid one-stop options and loyalty benefits. When comparing airlines, consider fare class, baggage policies, elite status perks, and schedule frequency—Delta generally wins on nonstop frequency, JetBlue on customer experience to New York, and American on broader connections. Book based on your priorities: nonstop reliability (Delta), comfort and legroom (JetBlue on select flights), or overall itinerary flexibility (American).