Pediatric sinonasal tumors are rare and challenging to manage. Tumors near the sphenopalatine foramen, with contrast enhancement on CT and MRI, often require extensive surgical exposure to identify the tumor base and control hemorrhage. Minimally invasive approaches are preferred to avoid potential long-term impacts on sinus and maxillofacial development. This study describes three pediatric sinonasal and pterygopalatine fossa tumors treated via endonasal endoscopic surgery combined with transcatheter arterial embolization (TAE). Patients (aged 9, 10, and 11) presented with epistaxis, nasal obstruction, and/or eyelid swelling. Tumors measured 32 mm, 50 mm, and 61 mm, located in the ethmoid sinus, nasal cavity, and pterygopalatine fossa. TAE was performed on surgery day, followed by tumor removal under general anesthesia using endoscopy. Techniques included endoscopic sinus surgery (ESS), nasal septum correction, and, in two cases, additional incisions for access. Pathology revealed hemangioma, nasal polyps, and angiofibroma. TAE reduced tumor size, improving visualization, while septum manipulation enabled tumor retraction and base identification. These methods ensured successful, minimally invasive tumor removal.