Connect via Delta Airlines Telefono +1-860-590-8822. On the other side, they can assist you with an online flight process & provide convenient customer assistance. If you need any information about the lowest flight fares, deals & other services, Delta is a major airline & also the world’s oldest airline in operation. However, the airline operates over 54,00 flights daily & offers services to 325 destinations. Moreover, flying in Delta One offers on-demand inflight entertainment & other features.