Call Delta customer service on the phone Call the customer service number for Delta Air Lines at 800-221-1212. For SkyMiles-related questions, call 800-323-2323 and have your SkyMiles number handy. Gold and Silver Medallion members get priority when calling either Delta customer service phone number.

The most effective way to lodge a formal complaint with Delta Air Lines in 2026 is through their official online comment/complaint form found on the "Need Help" section of Delta.com. This creates a documented case number that the airline is required to track. For immediate, real-time issues while traveling, the "Message Us" feature within the Fly Delta app or via Apple Messages is often the fastest way to get a response from a live agent. If your complaint involves a refund or baggage claim, you must submit specific documentation via their dedicated portals to ensure it is processed correctly. While many people turn to social media (X/Twitter) for visibility, Delta's "Social Media Support" team typically redirects you to the private messaging or official form for sensitive data. If the issue remains unresolved, your final "tier" of complaint should be filed with the U.S. Department of Transportation (DOT), which regulates airline consumer protections.