Flight 343- LGA to ORD (4.14.19) 3 passengers: Dr. Ryan P. Merkow, Jenifer Waugh & Eva Merkow Upon arrival to check in for our "on time" flight at 6:15 PM, we received a notice roughly 15 minutes through security that our plane was being delayed 5 hours due to weather. Although Chicago had experienced weather during the day, it was obvious flights were making it in and out of LGA from ORD throughout the evening. Three consecutive flights scheduled after our 6:15 flight made it in from ORD and back out of LGA to Chicago. When questioning Delta associates about the discrepancy, they continued to state it was a weather issue even though they admitted that other flights were making it in and out of the Chicago airport. As travelers continued to press the agents, they finally admitted that it was a crew issue and that it was in fact a delayed crew that ran out of flight hours. We were then informed of a delay until 1:20 AM but assured that irregardless of when the flight landed, it would get out with a new crew and the travel restriction hours would be lifted so we could leave LGA. At approximately, 12:30 AM we were informed that the flight was being rescheduled until 7AM again due to weather. Throughout this process, the service agents were extremely disorganised as well as very rude and lacked all sense of customer service. They refused to assist travelers in any way and did not offer pillows or blankets until multiple customers began to raise their voices. We were asked to leave the terminal and head to baggage claim as TSA could not accommodate the flight group. From 1AM until 5AM, customers were required to sleep on the concrete floor in the hope that the 7AM flight would make it out. This has been an atrocious travel / customer service experience all together. We were in the process of booking 3 international flights with Delta this next month but have reconsidered due to our unfortunate series of events today. It is doubtful we will ever trust our flight plans to Delta again in the future. I certainly hope that the team is held accountable for their actions and changes are made to assist future travelers. We will be proceeding with action at the BBB. Thank you, The Merkow Family