In the January-March period, Koreans spent $4.68 billion using cards abroad, down 3.3 percent from three months earlier, according to the data by the Bank of Korea.
Quarterly card spending peaked at a record $5.07 billion in the first three months of 2018. But it declined for two quarters in a row and rebounded to $4.83 billion in the fourth quarter of last year.
On an annual basis, first-quarter spending also fell 7.8 percent, according to the BOK.
The BOK said more people went on overseas trips during the winter vacation season, but they spent less overseas amid a strength of the US dollar.
Korean tourists also preferred shorter overseas trips to Asian nations, including Vietnam and Japan, the BOK said.
By Ram Garikipati and newswires (firstname.lastname@example.org)