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This study determined the chemical composition of volatile components and antioxidant properties of <em>Allium jesdianum</em> (<em>AJ</em>), <em>Nasturtium officinalis</em> (<em>NO</em>), <em>Eremurus spectabilis</em> (<em>ES</em>), <em>Tragopogon graminifolium</em> (<em>TG</em>) and <em>Falcaria vulgaris</em> (<em>FV</em>) which grow in the west of Iran. Total phenol content, total flavonoid, free radical scavenging ability (by IC₅₀ value of DPPH test) and total antioxidant capacity were measured using Folin-Ciocalteu assay, aluminium chloride colorimetric assay, the DPPH and the phosphomolybdate method, respectively. The total antioxidant capacities of <em>AJ, NO, ES, TG</em>, and <em>FV</em> were 1.03±0.01, 1.39±0.09, 2.41±0.42, 0.79±0.08, and 1.20±0.13 (μmol ascorbic acid/gram of dry extract), respectively. Total flavonoid contents of <em>AJ, NO, ES, TG</em>, and <em>FV</em> were 21.55±1.22, 33.05±8.80, 18.32±2.30, 32.16±9.46 and 23.06±3.21 (mg quercetin/gram of dry extract), respectively. Total phenol content of the plant extracts ranged from 250.91 to 702.69 mg of gallic acid/gram of dry extract. <em>NO</em> has the highest DPPH scavenging activity with the lowest IC₅₀ value (1654.75±857.56 μg/mL of extract) and AJ has the lowest DPPH scavenging activity with the highest IC₅₀ value highest (8538.33±563.96 μg/mL). The investigated traditional Iranian edible plants are rich in different types of chemical compounds and are good available sources of natural antioxidant compounds.