A thermoplastic composition comprising: 40 to 75 wt% of a poly(carbonate-siloxane-arylate); 5 to 45 wt% of a poly(carbonate-siloxane) present in an amount effective to provide 0.75 to 7% wt% of siloxane units; 10 to 40 wt% of a polycarbonate homopolymer; 5 to 15 wt% of an organophosphorus compound in an amount effective to provide 0.1 to 1 wt% of phosphorus; and optionally, 0.1 to 10 wt% of an additive composition, wherein each amount is based on the total weight of the poly(carbonate-siloxane-arylate), poly(carbonate-siloxane), polycarbonate homopolymer, flame retardant, and optional additive composition, which does not exceed 100%; and wherein the thermoplastic composition has a melt volume flow rate of greater than 6 cm 3 /10 min when measured in accordance with the ISO-1133-1:2011 standard at 300°C under a load of 1.2 kg with a residence time of 300 seconds; and an article molded from the thermoplastic composition has a 2-minute integrated heat release rate of less than or equal to 65 kW-min/m 2 and a peak heat release rate of less than 65 kW/m 2 as measured using the method according to Part IV, OSU Heat Release of FAR/JAR 25.853, Amendment 25-116; and a notched Izod impact resistance of greater than 30 kJ/m 2 determined in accordance with ISO 180:2000 on notched 4 millimeter thick ISO bars at 23°C, with a 5.5 J hammer; a notched Izod impact resistance of greater than 700 J/m 2 measured on notched 3.2 mm bars at 23°C, in accordance with the ASTM-D256-10 standard, wherein the total amount of chlorine and bromine is less than or equal to 200 ppm, based on the total parts by weight of the thermoplastic composition, excluding any filler. 40 to 75 wt% of a poly(carbonate-siloxane-arylate); 5 to 45 wt% of a poly(carbonate-siloxane) present in an amount effective to provide 0.75 to 7% wt% of siloxane units; 10 to 40 wt% of a polycarbonate homopolymer; 5 to 15 wt% of an organophosphorus compound in an amount effective to provide 0.1 to 1 wt% of phosphorus; and optionally, 0.1 to 10 wt% of an additive composition, wherein each amount is based on the total weight of the poly(carbonate-siloxane-arylate), poly(carbonate-siloxane), polycarbonate homopolymer, flame retardant, and optional additive composition, which does not exceed 100%; and wherein the thermoplastic composition has a melt volume flow rate of greater than 6 cm 3 /10 min when measured in accordance with the ISO-1133-1:2011 standard at 300°C under a load of 1.2 kg with a residence time of 300 seconds; and an article molded from the thermoplastic composition has a 2-minute integrated heat release rate of less than or equal to 65 kW-min/m 2 and a peak heat release rate of less than 65 kW/m 2 as measured using the method according to Part IV, OSU Heat Release of FAR/JAR 25.853, Amendment 25-116; and a notched Izod impact resistance of greater than 30 kJ/m 2 determined in accordance with ISO 180:2000 on notched 4 millimeter thick ISO bars at 23°C, with a 5.5 J hammer; a notched Izod impact resistance of greater than 700 J/m 2 measured on notched 3.2 mm bars at 23°C, in accordance with the ASTM-D256-10 standard, the thermoplastic composition has a melt volume flow rate of greater than 6 cm 3 /10 min when measured in accordance with the ISO-1133-1:2011 standard at 300°C under a load of 1.2 kg with a residence time of 300 seconds; and an article molded from the thermoplastic composition has a 2-minute integrated heat release rate of less than or equal to 65 kW-min/m 2 and a peak heat release rate of less than 65 kW/m 2 as measured using the method according to Part IV, OSU Heat Release of FAR/JAR 25.853, Amendment 25-116; and a notched Izod impact resistance of greater than 30 kJ/m 2 determined in accordance with ISO 180:2000 on notched 4 millimeter thick ISO bars at 23°C, with a 5.5 J hammer; a notched Izod impact resistance of greater than 700 J/m 2 measured on notched 3.2 mm bars at 23°C, in accordance with the ASTM-D256-10 standard, a 2-minute integrated heat release rate of less than or equal to 65 kW-min/m 2 and a peak heat release rate of less than 65 kW/m 2 as measured using the method according to Part IV, OSU Heat Release of FAR/JAR 25.853, Amendment 25-116; and a notched Izod impact resistance of greater than 30 kJ/m 2 determined in accordance with ISO 180:2000 on notched 4 millimeter thick ISO bars at 23°C, with a 5.5 J hammer; a notched Izod impact resistance of greater than 700 J/m 2 measured on notched 3.2 mm bars at 23°C, in accordance with the ASTM-D256-10 standard, wherein the total amount of chlorine and bromine is less than or equal to 200 ppm, based on the total parts by weight of the thermoplastic composition, excluding any filler.