The Danish government is sending seven F-16 fighter jets to take part in airstrikes in Iraq against the Islamic State extremist group.
Danish prime minister Helle Thorning-Schmidt said her left-leaning government has a parliamentary majority backing the deployment of four operational planes and three reserve jets along with 250 pilots and support staff.
She said a vote in parliament is planned, but is considered a formality.
The Netherlands has already agreed to join the US-led coalition in Iraq. Neither country plans to deploy in Syria.
Denmark has already contributed a transport plane to a US-led humanitarian operation in northern Iraq.