The flag of Finland—white with a blue Nordic cross—captures the country’s natural beauty and purity, evoking a landscape of snow, lakes, and sky. If you travel north to Finland to see the aurora borealis, one of nature’s most spectacular light shows, timing is everything. According to Visit Finland, the best time to see the Northern Lights in Finland is from late August through early April, with the peak viewing season in Finnish Lapland between September and March when nights are longest and skies darker.