Domestic services are not impacted.
A Singapore Airlines spokesman said the airline is continuing to work closely with the New Zealand authorities to ensure the number of inbound arrivals does not overwhelm the quarantine facilities.
''We will manage the number of inbound passengers we carry over a rolling 14 day period, in consultation with the relevant authorities, so as to ensure we continue to assist the New Zealand government in managing available quarantine space.''
Earlier this month the minister in charge of quarantine and isolation facilities Megan
Woods said the Government and Air New Zealand had agreed to manage incoming bookings in the short term.
This was then extended to other airlines as the Government stemmed the flow of returnees into isolation hotels.
The number of people in quarantine or managed isolation yesterday was 3173. There is space for about 6000 people in 32 hotels in Auckland, Hamilton, Rotorua, Wellington and Christchurch.
Woods said earlier in July the restrictions would enable the Government to safely place New Zealanders arriving home into a managed isolation or quarantine facility, said Woods.
She said "we were never going to let" border facilities reach maximum capacity.
The Government is working on plans to charge returnees to cover costs of the 14-day stay while National says it would impose a $3000 charge for each adult if it came to power in September.