DEN > Estonia + 6 nights:

6-14 days, Big Cities, Europe, Fall Break, Flight & Hotel: $701 to $900, History, International Trips, October

Denver to Tallinn, Estonia plus 6 nights    –    Sat, Oct 14 to Fri, Oct 20.
Flight Alone: $669   (Check Business Class Fares)
Flight + basic hotel: $787 – Flight plus 4 & 5 star hotels: Click for more details
Not sure if this is the best airfare possible? (Compare historical fares)
Other options: AirBnB or VRBO.   Hostels.com or Hostel World.
Know someone in Tallinn? Try a reverse-search & invite them for a visit.
All Inclusive Options (if any)
Click here for screenshot of fare found