Deputy President William Ruto on Tuesday morning left the country for The Hague.
Mr Ruto and former radio journalist Joshua arap Sang will attend the hearing of the no-case-to-answer motion at the International Criminal Court (ICC).
Mr Ruto was seen off at Jomo Kenyatta International Airport by over 40 MPs and senators.
They were led by National Assembly Majority Leader Aden Duale and his Senate counterpart Kindiki Kithure.
The hearing of the motion of no case to answer starts Tuesday after which Trial Chamber judges Chile Eboe-Osuji (presiding judge), Olga Herrera Carbuccia and Robert Fremr will retire to decide whether or not he has a case to answer.
Besides the decision on the no-case-to-answer motion, Mr Ruto and Mr Sang will also be waiting for the ICC Appeals Chamber to pronounce its judgment on whether Prosecutor Fatou Bensouda can rely on prior recorded testimony under the Rule 68 of the ICC Rules of Procedure and Evidence.