The nurses, working at Baquba General hospital in Diyala in Iraq, travelled to Sharjah from where they emplaned to Kochi this morning, airport officials said.
One of the nurses told media personnel at nearby Nedumbasery airport that they could hear bombs exploding, but did not have any problems at their hospital.
Another nurse said she had gone to Iraq three months ago with lot of expectations after taking loans. However, she had to return due to the worsening situation there.
On July 5, 46 nurses, 45 of them from Kerala and one from Tamil Nadu, who were held captive by ISIS militants in Iraq, had arrived in the state.
NRI businessman C K Menon had offered Rs three lakh each to the 46 nurses.