Delusional thoughts are defined as stable beliefs that are not amenable to change when conflicting evidence is presented. Like psychosis broadly, endorsement of delusional ideation appears to exist on a continuum ranging from severe to common endorsement in non-clinical samples. Delusional ideation, particularly in a subclinical conceptualization, fails to receive adequate attention in psychological research despite potential connections to both negative (i.e., symptoms of psychopathology) and positive (i.e., quality of life) outcomes. The psychological flexibility model, a conceptualization of human wellness in Acceptance and Commitment Therapy (ACT), may explain delusional ideation. The current study aimed to fill these gaps in the literature with respect to delusional ideation, the psychological flexibility model, and associated outcome variables. Survey data was collected through both Amazon’s Mechanical Turk (MTurk) and a college sampling system (SONA). Participants were 131 individuals who provided information regarding potentially delusional beliefs, psychological flexibility and inflexibility, symptoms of psychopathology, and quality of life. Moderation analysis revealed statistically significant main effect of subclinical delusional beliefs and psychological inflexibility predicting symptoms of psychopathology. Psychological flexibility was not explored due to lack of evidence for assumptions of moderation analysis being met. Overall, results suggest intricate relationships between subclinical delusional ideation, the psychological flexibility model, and associated outcome variables. The importance of future research endeavors regarding subclinical delusional ideation is warranted given the nature of the current study’s results. Similarly, mental health providers should continue to consider the psychological flexibility model given the importance in predicting outcome variables.