The integrative cognitive-affective therapy (ICAT) momentary maintenance model proposes a number of situational factors that precipitate eating disorder (ED) behaviors and cognitions. The current study examines momentary situational triggers in relation to a broad range of ED symptoms in a diagnostically heterogeneous sample of individuals with ED psychopathology. In the current study, 30 women with binge eating pathology completed a 14-day ecological momentary assessment (EMA) protocol during which they responded to five random signals throughout the day. During signaled assessments, participants completed measures of self-criticism, interpersonal problems, self-regulation of binge eating, appearance concerns, and cognitive and behavioral ED symptoms. Multilevel models were used to examine prospective associations between hypothesized ICAT maintenance factors and ED symptoms. Within-subjects self-criticism prospectively predicted vomiting, restriction, preoccupation with thoughts of food, and urges to eat. Within-subjects interpersonal problems prospectively predicted vomiting, and within-subjects appearance concerns prospectively predicted preoccupation with thoughts of food. There were no significant predictors of binge eating. These results provide some support for hypothesized momentary situational triggers of ED symptoms in the momentary maintenance model of ICAT using naturalistic, momentary assessment. Specifically, it may be particularly useful for interventions such as ICAT to address momentary self-criticism when targeting a range of ED symptoms.