Kerry's trip, ahead of the inauguration of Republican President-elect Donald Trump, comes as diplomatic ties between the two longtime allies have been strained by the Iran nuclear deal championed by Democratic President Barack Obama and other issues.
Meanwhile, America has grown increasingly worried about civilian casualties caused by Saudi-led airstrikes in Yemen to the point of cutting some arms sales to the kingdom last week.
The war in Yemen has also allowed extremist groups to flourish there, as the local affiliate of the Islamic State group claimed a suicide bombing today in the southern port city of Aden that killed at least 48 soldiers lined up to receive their pay.
The UAE is part of the Saudi-led coalition fighting Yemen's Shiite rebels, known as Houthis, while Oman has served as an interlocutor for them.
On Twitter, British Middle East Minister Tobias Ellwood said the meeting discussed a political process to end Yemen's war, something he described as "the only way to bring peace."
The UN and rights groups estimate at least 9,000 people overall have died in the war, with the UN estimating at least 4,125 civilians have been killed since the airstrike campaign began.
Saudi-led coalition airstrikes were responsible for 60 percent of the civilian deaths over a yearlong span starting in July last year, according to a UN report.
Nearly 3 million more people have been displaced inside the Arab world's poorest country by the war.
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