Erdogan, whose country has come to Qatar's aid in the crisis, had talks in Jeddah Sunday with King Salman who hailed the Turkish leader's "efforts in the fight against terrorism and its financing," Saudi state news agency SPA reported.
Erdogan is scheduled to fly to Kuwait later today before heading to Qatar tomorrow for his first face-to-face talks with Emir Sheikh Tamim bin Hamad al-Thani since the crisis began.
He accused "enemies" of seeking to "fire up tensions between brothers" in the region.
Erdogan praised Qatar's behaviour in the crisis, saying Doha had sought to find a solution through dialogue. "I hope our visit will be beneficial for the region," he said.
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On June 5, Saudi Arabia, Bahrain, the United Arab Emirates and Egypt cut ties with Qatar, accusing it of backing extremism and fostering ties with their Shiite rival Iran.
Doha denies the claim and has been strongly backed by Ankara throughout the standoff.
In recent years, Qatar has emerged as Turkey's number one ally in the Middle East, with Ankara and Doha closely coordinating their positions on a number of issues including the Syria conflict where both are staunch foes of President Bashar al-Assad.
Crucially, Turkey is in the throes of setting up a military base in Qatar, its only such outpost in the region. It has expedited the process since the crisis began and reportedly now has 150 troops at the base.
But Turkey, which is also going through a turbulent time with the European Union and the United States, also does not want to wreck its own relations with regional kingpin Saudi Arabia.
As well as meeting King Salman, Erdogan was also to hold talks with Mohammed bin Salman for the first time since he was elevated to the role of crown prince and his father's heir in a dramatic June reshuffle of the royal house.
"As the elder statesman in the Gulf region, Saudi Arabia has a big role to play in solving the crisis," said Erdogan, taking care not to explicitly criticise the kingdom.