UPDATE 1-Trump says he will discuss South Korea trade deal with senior advisers

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HOUSTON, Sept 2 (Reuters) - President Donald Trump said on Saturday that next week he would discuss with his advisers whether to withdraw from a trade deal with South Korea in a move that comes at a time of heightened tensions with North Korea.

Trump was speaking with reporters while on a trip to hurricane-hit Houston, and his comments came after he spoke with South Korean President Moon Jae-in on Friday and struck a deal allowing the South access to longer-range missiles and a potential arms sale to Seoul.

The U.S.-Korea Free Trade Agreement has been a frequent target for Trump, who, in interviews with Reuters, has threatened to pull out of what he terms an unequal deal.

Trump has often said the deal was supported by then-Secretary of State Hillary Clinton, his opponent in the 2016 presidential election.

Trump's comments came amid a standoff over North Korea's missile and nuclear tests. North Korea sharply raised regional tension this week with the launch of its Hwasong-12 intermediate-range ballistic missile, which flew over Japan and landed in the Pacific.

Washington wants to change the deal to help cut its trade deficit with Asia's fourth-largest economy.

South Korean and U.S. officials began talks about possible revisions to the agreement on Aug. 22 but failed to agree on how to move forward.

U.S. Trade Representative Robert Lighthizer, South Korean Trade Minister Kim Hyun-chong and the trade pact's joint steering committee participated in a one-day videoconference that ended without a decision on the next steps for possible revisions. (Reporting by Steve Holland in Houston; Writing by David Chance; Editing by Steve Orlofsky and Lisa Von Ahn)