Delta Air Lines offers online web check-in for passengers traveling on their flights. This service allows passengers to check in for their flight and select their seat online, before arriving at the airport. To use online web check-in, passengers can visit the Delta Air Lines website, enter their booking reference or e-ticket number, and follow the prompts to complete the check-in process. This includes selecting their seats, adding any additional services such as baggage or meals, and printing or saving their boarding pass to their mobile device. more info-https://www.airlinesmap.com/de....lta-airlines-web-che