United States dropping the requirement for a negative Covid test 24 hours prior to entering the country.  See the article below.

https://www.cnn.com/2022/06/10/politics/us-to-end-pre-departure-testing-requirement/index.html

 

Below are useful links from the Finnish Institute for Health and Welfare with current Covid-19 requirements and restrictions.  Additionally, there is a link to local testing sites.

 

From this link ( by the Finnish Institute for health and welfare) you can read more about the entry requirements

https://thl.fi/en/web/infectious-diseases-and-vaccinations/what-s-new/coronavirus-covid-19-latest-updates/travel-and-the-coronavirus-pandemic

as well as the Finnish Government pages: https://valtioneuvosto.fi/en/information-on-coronavirus/current-restrictions/travel-to-and-from-finland

 

You can find Covid testing places from this page

https://www.koronatestihinta.fi/en/finland/helsinki/     I can recommend PR2You Oy