The most popular designs have included the Southern Cross, koru patterns and the silver fern.
It is expected about 8000 designs would be submitted in total, with hundreds expected in a last-minute flurry today.
From the thousands of ideas, four would be put to a public vote later this year when the first referendum on the issue is expected.
The Flag Consideration Panel also ran a series of public roadshows around the country, but attendances were low.
And for TV3 viewers this morning, there's no escaping the flag as Paul Henry hosts his show resplendent in a Union Jack and Southern Cross suit.
(App users click here to see the flags)
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• Submit a design at
. The deadline is July 16.
• Have a say at standfor.co.nz