Objective: To assess the effect of warm saline on bleeding and surgical field visibility during endoscopic sinus surgery and septorhinoplasty. Methods: The study included 100 patients, of both males and females, aged 28-58 years, classed I and II by the American Society of Anesthesiologists (ASA), and assigned for elective functional endoscopic sinus surgery and septorhinoplasty under general endotracheal induced hypotensive anesthesia, at King Hussein Hospital, King Hussein Medical City (KHMC), Amman, Jordan, during the period Jan.2014-Feb.2015. Patients were assigned using sealed envelopes into two groups: group I (n=50): patients received warm saline of up to 48 Degree Celsius (DC) during surgery for packing and irrigation and group II (n=50): patients received room temperature normal saline of up to 20 DC, with the use of vasoconstrictors (in functional endoscopic sinus surgery and septorhinoplasty) and microdebriders (only in functional endoscopic sinus surgery). Results: Blood loss was 201.43ml in group I, while room temperature normal saline administration (group II) was correlated with 257.34 ml of blood loss (P<0.05). Conclusion: The administration of topical warm saline of up to 50 DC attained a significant decrease in blood loss and duration of surgery. It enhanced the surgical site visibility and increased the surgical satisfaction during functional endoscopic sinus surgery and septorhinoplasty.