The Government says the Trans-Pacific Partnership (TPP) deal will save wine producers $10 million a year in tariffs.
The export industry is set to be worth $2 billion a year within four years.
Today Air New Zealand and the Winegrowers' Association hosted more than 60 international wine connoisseurs and writers.
They were showing off New Zealand's wine growing regions by air and tasting the relevant wines while passing overhead.
The Winegrowers' Association says New Zealand wine is in a period of strong international growth.
It would put wine into New Zealand's top 5 exports.