On 14 February, the Henry Hub Natural Gas price was USD 1.83 per one million British thermal units (MMBtu), which was 16.4% lower than on the same day in the previous month. Moreover, the price was down 16.4% on a year-to-date basis and was 28.9% lower than on the corresponding day in 2019. Get free historical data for UNG. You'll find the closing price, open, high, low, change and %change of the United States Natural Gas Fund, LP ETF for the selected range of dates. ICE Natural Gas TTF Historical Prices. Find Historical End-of-Day ICE Natural Gas TTF prices on the Price History page. For more data, Barchart Premier members can download historical Intraday, Daily, Weekly, Monthly or Quarterly data on the ICE Natural Gas TTF Historical Download tab, and can download additional underlying chart data and study values using the Interactive Charts.