Delta Air Lines: Hubs, Baggage, Check-In & Booking Guide

Delta is one of the largest U.S. carriers and a founding member of the SkyTeam alliance, which extends its reach through partners like Air France, KLM, and Korean Air. It's known for a large domestic network paired with a growing international long-haul schedule.

Delta's major hubs include Atlanta (ATL), the world's busiest airport by passenger traffic, along with Minneapolis-St Paul (MSP), Detroit (DTW), Salt Lake City (SLC), Seattle (SEA), New York (JFK/LGA), and Los Angeles (LAX).

Delta serves destinations across North America, the Caribbean, Latin America, Europe, Africa, and Asia, both directly and through its SkyTeam partners.

Baggage allowances depend on fare class, route, and SkyMiles status — Basic Economy fares are typically the most restrictive. As with most carriers, current fees and weight limits should be confirmed for your specific booking before you fly.

Check-in is available online, via the Fly Delta mobile app, at airport kiosks, or at the counter. Online check-in typically opens 24 hours before departure, and Delta's app is widely used for real-time gate and delay updates.

Delta offers Basic Economy, Main Cabin, Delta Comfort+, Delta Premium Select, and Delta One (its Business/First hybrid product on long-haul routes). Cabin availability varies by aircraft and route.

Bookings made at least 7 days before departure can typically be cancelled free within 24 hours of booking, under U.S. DOT rules. Beyond that, Delta's main cabin fares generally allow changes without a change fee on most domestic and many international routes, though fare differences may still apply.