Radisson Colonial Hotel - Helena

Delta Hotels by Marriott Helena Colonial is a full-service hotel and event property situated near Montana's State Capitol in Helena. Built in 1971 and later renovated, the property is home to one of the largest convention facilities in the state, with more than 18,000 square feet of flexible meeting and event space distributed across 11 distinct venues. The centerpiece is a 4,600-square-foot ballroom capable of hosting up to 400 guests for seated banquets or up to 500 for conferences and receptions. A full-service restaurant, lounge, indoor heated pool, fitness center, and complimentary on-site parking serve both event attendees and overnight guests across the hotel's 150 rooms and suites. The property sits less than four miles from Helena Regional Airport, making it a practical base for regional gatherings, multi-day corporate meetings, and celebratory events alike.