Legacy / full-service network carrier · SkyTeam (founding member, 2000)

Delta Air Lines (DL)

Delta Air Lines traces its history back to a 1920s crop-dusting outfit and has grown into one of the most operationally consistent airlines in the world. Today it runs a coast-to-coast hub network from Atlanta, Detroit, Minneapolis, Salt Lake City, New York, Los Angeles, Seattle, and Boston, and is consistently ranked at or near the top of US carriers for on-time performance and completion factor. The 2008 merger with Northwest Airlines gave the airline its trans-Pacific backbone and the Detroit and Minneapolis hubs. Delta is a founding member of SkyTeam and holds equity stakes or deep joint ventures with Air France-KLM, Virgin Atlantic, Korean Air, LATAM, and Aeromexico, giving it the broadest set of metal-neutral partnerships of any US carrier. The airline employs roughly 100,000 people and operates a mainline fleet of around 990 aircraft.

Founded   1924 HQ   Atlanta, Georgia ICAO   DAL

Hubs

IATA Airport Role
ATLAtlantaLargest hub in the world by passengers; the heart of the Delta network
DTWDetroitMidwest and trans-Pacific gateway
MSPMinneapolis-St PaulUpper Midwest hub
SLCSalt Lake CityMountain West hub
JFKNew York JFKTransatlantic gateway
LGANew York LaGuardiaDomestic-focused New York hub
LAXLos AngelesWest Coast hub
SEASeattle-TacomaPacific Northwest hub and Asia gateway
BOSBoston LoganNortheast hub
Fleet
Approximately 990 mainline aircraft (2026)
Main types: Airbus A220-100/300 · Airbus A319/A320/A321/A321neo · Airbus A330-200/300/900neo · Airbus A350-900 · Boeing 717-200 · Boeing 737-800/900ER/MAX 10 · Boeing 757-200/300 · Boeing 767-300ER/400ER
Delta runs one of the most diverse fleets in the world and has been an early adopter of the A220 and A350. The airline continues to operate older 757s and 767s on long-haul routes longer than peers and is bringing the 737 MAX 10 into service.
Frequent flyer
SkyMiles
Tiers: SkyMiles Member · Silver Medallion · Gold Medallion · Platinum Medallion · Diamond Medallion
Earning: Status is earned through Medallion Qualification Dollars (MQDs), a fully revenue-based metric since the 2024 program reset. Miles are earned per US dollar spent on tickets and partner activity, not per mile flown.
Co-brand cards: Delta SkyMiles American Express portfolio (Blue, Gold, Platinum, Reserve, plus business variants).
Customer service
Phone: 1-800-221-1212 (24/7)
Twitter/X: @Delta
US Department of Transportation complaints: transportation.gov/airconsumer

Baggage policy

Carry-onOne personal item plus one carry-on (22 x 14 x 9 in / 56 x 36 x 23 cm) free for all fare classes including Basic Economy on most routes.
First checked bag (domestic)$35 domestic ($30 if pre-paid online via the Delta app); free for Medallion members from Silver and above, SkyTeam Elite Plus, premium-cabin passengers, and Delta SkyMiles American Express cardholders.
Second checked bag (domestic)$45 domestic.
Weight / size limits50 lb / 23 kg per bag, 62 linear inches (158 cm) total dimensions.
First international checkedYes on most international economy fares; Basic Economy to Europe and other long-haul markets typically still includes a checked bag, which is unusual among US carriers.

Verify current fees on the carrier's site before booking — US airlines update bag pricing several times per year.

Regional partners & subsidiaries

Delta Connection (regional brand)
Endeavor Air (wholly owned), SkyWest Airlines, and Republic Airways under capacity-purchase contracts.

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