Visiting art museums has been associated with a range of flourishing outcomes. But there have been recent shifts towards increasing digital engagement with art, leading to a radical change in how people experience visual art. Given the now expansive virtual art viewing options, it is important to understand whether digital engagement can also lead to greater flourishing, and if so under what conditions. We examined the flourishing effects of viewing art in a virtual gallery in a pre-registered experiment comprising four sessions over four weeks, with varying viewing instructions designed to increase immersion. Participants were recruited from a U.S. representative sample on Prolific, resulting in a final sample of 687 participants. People were randomly assigned to one of nine experimental conditions. Eight art viewing conditions involved four 15-minute virtual gallery visits with viewing instructions varying on two factors: slow-looking and immersive mindset framing. An active control condition involved reading about (but not viewing) art. Participants completed a battery of baseline flourishing measures in week 1, completed experimental art engagement sessions during weeks 1-4, and completed the battery again in week 5. While immersion levels were greater in the viewing conditions than the reading condition, growth in flourishing did not differ across condition. Exploratory analyses, however, showed that immersion during the gallery visits did predict some changes in specific facets of flourishing (e.g., engagement, meaning, autonomy satisfaction). We suggest a number of possible explanations for these null results and point to what is needed in future research.