Tickets already reserved will be refunded in full through INTERPARK, the official ticket agent.
"Please understand that this decision was made after extensive and careful consideration", the band further added.
The announcement came shortly after BTS dropped a new music video for its latest single "On" from its new "Map of the Soul: 7" album.
The concerts in Korea's capital were meant to launch the band's world tour, so the decision is not made lightly. The next dates on BTS' tour schedule are in California.
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Amid heightened concerns over the global spread of a highly contagious coronavirus, BTS canceled its Seoul concert, which was to be held in April.
"We must take into consideration the health and safety of hundreds of thousands of guests as well as our artists and the dire impact a last-minute cancellation may have on guests from overseas, production companies and staff", the agency said.
It has yet to be determined whether new concert dates for Seoul will be announced at a later time.
It's no wonder sensational South Korean boy band BTS, the first group since The Beatles to earn three number one albums in the U.S.in less than a year, has prudently canceled four shows in Seoul.
Both groups released new albums this month: BTS dropped their seventh studio album Map of the Soul: 7 on February 21, and Green Day debuted Father of All... on February 7, the band's 13th album to date. An outbreak of the coronavirus (renamed COVID-19) in South Korea has caused widespread alarm and prompted the Korean government to spend more than $13 billion in emergency funds (so far) in order to contain the virus and also combat the economic wreckage its caused worldwide.