What is the Best Way to contact Delta Air Lines? The most efficient method is calling their 24/7 for immediate support. If you prefer digital options, the Fly Delta app and the official Delta website offer live chat features and messaging support. For general inquiries or non-urgent matters, you can reach out via Delta’s social media channels like Twitter (@Delta). You may also use the online contact forms available on their website. Ultimately, what is the best way to contact Delta Air Lines depends on your needs, but phone and app support are the fastest.