Delfly sp. z o.o. v. Smartwings Poland sp. z o.o., formerly Travel Service Polska sp. z o.o., Case C-356/19, 3 September 2020 - European Air Law (Update) View the chapter Delfly sp. z o.o. v. Smartwings Poland sp. z o.o., formerly Travel Service Polska sp. z o.o., Case C-356/19, 3 September 2020 by - European Air Law (Update) Delfly sp. z o.o. v. Smartwings Poland sp. z o.o., formerly Travel Service Polska sp. z o.o., Case C-356/19, 3 September 2020