Round trip from Boston to Helsinki for $393

SAS (Scandinavian Airlines) via Booking.com has round trip airfares from Boston to Helsinki for $393, which is a significant reduction from the original price of $470. This deal includes one stop in Copenhagen both ways and offers multiple flight options within the specified travel window from October 2026 through April 2027. The fare type is SAS Go Light, allowing only a personal item and a carry-on bag, which is typical for lower-cost fares. The availability spans numerous dates, giving travelers flexibility while securing a good discount on international travel to Finland. This is one of the lowest prices we've seen for flights on this route in recent years, and the substantial saving of $77 makes it a strong deal for those planning to visit Helsinki during these months.