ˈiːtʃ tɹˈævəl ˌɔːθɚɹᵻzˈeɪʃən ˌʌndɚɹ ˈɛstə kæn biː vˈælɪd fɔːɹ ˌʌp tə tˈuː jˈɪɹz, fɔːɹ mˌʌltɪpəl tɹˈɪps dˈʊɹɹɪŋ ðæt pˈiəɹɪəd.
Each travel authorization under ESTA can be valid for up to two years, for multiple trips during that period.