congress plaza hotel3.5 out of 5 downtown chicago save 100% on your flight price was $544, price is now $388 per person $388 per person jun 9 - jun 12 found 13 hours ago roundtrip flight included atlanta (atl) to chicago (ord) book a stay at this business-friendly hotel in chicago. enjoy free wifi, 2 restaurants, and 2 bars/lounges. our guests praise the helpful staff and the clean rooms in our reviews. popular attractions grant park and art institute of chicago are located nearby. room was very dirty reviewed on mar 17, 2025