Onion is one of the most significant vegetable plants produced on large amounts in Egypt. Thrip tabaci is the most important pest causes damage to seed heads and may cause reduction in onion seed crops about 50% annually. The combination of Thiamethoxam + Abamectin have been recommended to control Thrips tabaci in Egypt. Herein, we evaluated the toxicity of eight selected insecticides [Abamectin (1.8% EC), Lufenuron (5% EC), Thiamethoxam (18.6% SC), and Thiamethoxam + Abamectin (18.6 EC+1.8% EC), Lambda-cyhalothrin+ Abamectin (5% EC+1.8% EC), Carbosulfan (20% SP), Lambda-cyhalothrin (5% EC) and Bacillus thuringiensis kurstaki (4.6% EC) against Thrips tabaci under field conditions. The results were recorded after 1, 2, 3, 7 and 14 days. The combination of Thiamethoxam + Abamectin was more potent to T. tabaci than either Thiamethoxam or Abamectin alone among all the pesticides tested, While, Lufenuron and Bacillus thuringiensis kurstaki were the least toxic insecticide. These insecticides mixtures give promising results in controlling onion thrips, T. tabaci.