The move comes following the reintroduction of pre-departure tests by the UK government on Saturday (4 December).
The airline sent 3,500 tests to the destination on Monday (6 November) for those who flew out before the announcement and are due to return to the UK after Tuesday (7 December).
A further 900 customers, who departed for Lapland on Monday (6 December), will also be given free pre-departure Covid tests.
