A flux-cored wire comprising: an outer steel sheath; and a flux with which the outer steel sheath is filled, wherein one or more of a fluoride of CaF 2, BaF 2, SrF 2, MgF 2, and LiF are included in the flux and, when a total amount thereof is defined as α, the α is 3.3 to 6.0% in terms of mass% with respect to a total mass of the flux-cored wire, and a ratio of an amount of the CaF 2 with respect to the α is 0.90 or more, one or more of a metal oxide of a Ti oxide, an Si oxide, a Zr oxide, an Mg oxide, and an Al oxide are included in the flux and, when a total amount thereof is defined as β, the β is 0.4 to 1.2% in terms of mass% with respect to the total mass of the flux-cored wire, one or more of a metal carbonate of CaCO 3, BaCO 3, SrCO 3, MgCO 3, and Li 2 CO 3 are included in the flux and a total amount thereof is 0.1 to 0.5% in terms of mass% with respect to the total mass of the flux-cored wire, an amount of an iron powder in the flux is less than 10% in terms of mass% with respect to the total mass of the flux-cored wire, an amount of CaO in the flux-cored wire is 0.15% or less in terms of mass% with respect to the total mass of the flux-cored wire, a chemical composition excluding the fluoride, the metal oxide, and the metal carbonate consists of, in terms of mass% with respect to the total mass of the flux-cored wire, C: 0.04 to 0.09%; Si: 0.3 to 1.0%; Mn: 1.0 to 2.5%; Al: 0.001 to 0.050%; Ni: 1.5 to 3.5%; V: 0 to 0.04%; P: 0.02% or less; S: 0.02% or less; Cu: 0 to 0.5%; Cr: 0 to 0.5%; Mo: 0.3 to 1.0%; Ti: 0 to 0.30%; Nb: 0 to 0.10%; B: 0 to 0.0100%; Ca: 0 to 0.50%; REM: 0 to 0.0100%; and a remainder including Fe and an impurity, a Ceq defined by the below expression (a) is 0.60 to 0.75 mass%, and a TE defined by the below expression (b) is 2.9 to 4.4 mass%, Ceq = " C " + " Si " / 24 + " Mn " / 6 + " Ni " / 40 + " Cr " / 5 + " Mo " / 4 + " V " / 14 TE = " Mn " / 2 + " Ni " + 3 × " Cr ", wherein elements to which double quote is attached express amounts of the elements in terms of mass%, respectively. an outer steel sheath; and a flux with which the outer steel sheath is filled, wherein one or more of a fluoride of CaF 2, BaF 2, SrF 2, MgF 2, and LiF are included in the flux and, when a total amount thereof is defined as α, the α is 3.3 to 6.0% in terms of mass% with respect to a total mass of the flux-cored wire, and a ratio of an amount of the CaF 2 with respect to the α is 0.90 or more, one or more of a metal oxide of a Ti oxide, an Si oxide, a Zr oxide, an Mg oxide, and an Al oxide are included in the flux and, when a total amount thereof is defined as β, the β is 0.4 to 1.2% in terms of mass% with respect to the total mass of the flux-cored wire, one or more of a metal carbonate of CaCO 3, BaCO 3, SrCO 3, MgCO 3, and Li 2 CO 3 are included in the flux and a total amount thereof is 0.1 to 0.5% in terms of mass% with respect to the total mass of the flux-cored wire, an amount of an iron powder in the flux is less than 10% in terms of mass% with respect to the total mass of the flux-cored wire, an amount of CaO in the flux-cored wire is 0.15% or less in terms of mass% with respect to the total mass of the flux-cored wire, a chemical composition excluding the fluoride, the metal oxide, and the metal carbonate consists of, in terms of mass% with respect to the total mass of the flux-cored wire, C: 0.04 to 0.09%; Si: 0.3 to 1.0%; Mn: 1.0 to 2.5%; Al: 0.001 to 0.050%; Ni: 1.5 to 3.5%; V: 0 to 0.04%; P: 0.02% or less; S: 0.02% or less; Cu: 0 to 0.5%; Cr: 0 to 0.5%; Mo: 0.3 to 1.0%; Ti: 0 to 0.30%; Nb: 0 to 0.10%; B: 0 to 0.0100%; Ca: 0 to 0.50%; REM: 0 to 0.0100%; and a remainder including Fe and an impurity, a Ceq defined by the below expression (a) is 0.60 to 0.75 mass%, and a TE defined by the below expression (b) is 2.9 to 4.4 mass%, Ceq = " C " + " Si " / 24 + " Mn " / 6 + " Ni " / 40 + " Cr " / 5 + " Mo " / 4 + " V " / 14 TE = " Mn " / 2 + " Ni " + 3 × " Cr ", wherein elements to which double quote is attached express amounts of the elements in terms of mass%, respectively.