SELECT "Airdate" FROM table_17951 WHERE "International destination" = 'Scotland'
what's airdate with international destination being scotland
CREATE TABLE table_17951 (
    "Season" text,
    "Airdate" text,
    "The Mole" text,
    "Winner" text,
    "Runner-up" text,
    "Prize money" text,
    "International destination" text
)