Bahrain No documentation of testing or vaccination is needed as of Feb. 20.
Curaçao As of March 10, visitor testing for Covid upon arrival and again on the third day has been eliminated.
El Salvador Covid entry regulations were lifted on Feb. 24.
Hungary There are no longer any coronavirus-related travel restrictions as of March 7.
Iceland The country removed all Covid entry restrictions on Feb 25.
Ireland As of March 6, there are no travel restrictions.
Jordan Travelers won’t need proof of a Covid test as of March 1.
Liechtenstein The principality follows the same rules as Switzerland, below.
The Maldives Revoked its public health emergency on March 13, allowing free entry.
Mexico Has had no restrictions for much of the pandemic, but travelers may encounter health checks upon arrival.
Mongolia As of March 14, it’s the first country in mainland Asia to open to all international travelers with no coronavirus health requirements.
Montenegro Requires no proof of a vaccine or test or passenger tracking form to travel to the nation as of March 10.
Norway As of Feb. 12, no testing, quarantining, or registration is needed.
Romania Lifted all Covid restrictions on March 16.
Saudi Arabia Removed its Covid-related entry requirements for holders of tourism visas on March 6.
Slovenia As of Feb. 19, there are no longer any coronavirus restrictions on entering the country.
Switzerland Lists no countries or areas with a variant of concern, effectively openings its borders as of March 10.
The United Kingdom Scrapped its last-remaining pandemic rules for international travel on March 18.