Fly from New York to Riga, Latvia for $504 round-trip, including all taxes, on KLM. This fare is available for travel on select dates through mid-May. For booking info, see our Fare Details.
Similarly low fares available from other departures cities too. See our Riga page for a complete round-up.
You'll find fares to both Helsinki, Finland and Tallinn, Estonia are looking pretty sharp for May travel too.