What are the highest successful run chases in T20I cricket history?

South Africa recorded the highest successful run chase in T20I cricket by chasing down 259-run target against West Indies in Centurion in 2023. West Indies recorded the second-highest successful T20I chase on Friday by chasing down 250-run target against India. The third-highest chase among Full Member nations came on February 16, 2018 when Australia chased down 244-run target against NZ.