<article><p class="lead">The number of passengers using Australia's busiest airport of Sydney dropped to a four-month low in June because of state border closures with New South Wales following a Covid-19 outbreak. </p><p>Passenger volumes were also affected by the suspension of quarantine-free travel between Australia and New Zealand as a result of the <a href="https://direct.argusmedia.com/newsandanalysis/article/2229220">Sydney outbreak</a>. Australia-New Zealand passenger traffic had returned to more than 40pc of the corresponding period in 2019 prior to this suspension, Sydney Airport said.</p><p>The drop in Sydney passenger volumes in June were the lowest since the 623,000 passengers that transited through the airport in February.</p><p class="bylines">By Kevin Morrison</p><p><table class='tbl-excel'><tr><td class='tbl-header' colspan='6'>Sydney Airport passenger traffic (&#39;000)</td><td class='tbl-header tbl-right tbl-italic'></td></tr><tr><td class='tbl-columnheader tbl-bold tbl-right'></td><td class='tbl-columnheader tbl-bold tbl-right'>Jun &#39;21</td><td class='tbl-columnheader tbl-bold tbl-right'>May &#39;21</td><td class='tbl-columnheader tbl-bold tbl-right'>Jun &#39;20</td><td class='tbl-columnheader tbl-bold tbl-right'>year to Jun &#39;21</td><td class='tbl-columnheader tbl-bold tbl-right'>year to Jun &#39;20</td><td class='tbl-columnheader tbl-bold tbl-right'>YTD &#39;21 vs YTD &#39;20 % &#177;</td></tr><tr><td class='tbl-rowspace' colspan='7'></td></tr><tr><td class='tbl-left'>Domestic</td><td class='tbl-right'>906</td><td class='tbl-right'>1,347</td><td class='tbl-right'>140</td><td class='tbl-right'>5,653</td><td class='tbl-right'>5,833</td><td class='tbl-right'>-3.1</td></tr><tr><td class='tbl-left'>International</td><td class='tbl-right'>83</td><td class='tbl-right'>88</td><td class='tbl-right'>34</td><td class='tbl-right'>318</td><td class='tbl-right'>3,551</td><td class='tbl-right'>-91.0</td></tr><tr><td class='tbl-left'>Total</td><td class='tbl-right'>989</td><td class='tbl-right'>1,435</td><td class='tbl-right'>174</td><td class='tbl-right'>5,971</td><td class='tbl-right'>9,384</td><td class='tbl-right'>-36.4</td></tr><tr><td class='tbl-footer tbl-right tbl-italic' colspan='7'>Source: Sydney Airport</td></tr></table></p></article>