Mr Odinga’s co-principal in Nasa, Bungoma senator Moses Wetang’ula, is also said to be out of the country.
It is not the first time Mr Odinga is in the Jewish state to attend an international conference.
In March last year, Mr Odinga travelled to Jerusalem to attend the first-ever Africa-Israel Policy and Leadership conference.
He spoke at the conference that was organised by The Harry S. Truman Research Institute of Advancement of Peace.
AUDITED REVENUE
He also addressed the conference on the subject of governance in Africa.
He was accompanied by Senators Dr Agnes Zani and Prof Anyang’ Nyong’o.
It was not immediately clear who accompanied Mr Odinga in the latest trip.
Sources close to the five Nasa principals – Mr Odinga, Mr Wetang’ula, Mr Musalia Mudavadi, Mr Kalonzo Musyoka and Bomet Governor Isaac Ruto – said they had already retained the technical team which helped craft the opposition alliance’s power-sharing formula and tasked them with the duty of developing a campaign strategy and structure as soon as possible.
The team is led by lawyer Dan Ameyo and includes economist David Ndii and University lecturer Adams Oloo among others.