Author: Bailey Schulz, USA TODAY

The CDC issued a level 4 travel health notice for Canada on Monday due to its “very high” level of COVID-19.

Fully vaccinated travelers and those under 12 will be able to continue to show either a negative PCR test or rapid antigen test to enter.

The United Kingdom added additional testing requirements in early December to curb the spread of the omicron variant.

Hawaii updated entry requirements this week to better align with guidance from the CDC.

Israel is set to drop a short-lived ban on all foreign national travelers on Sunday.

The U.S. enacted the travel restrictions in late November in an attempt to slow the spread of omicron within the U.S.

Thousands of US flights were canceled Christmas weekend because of omicron cases among staff, among other issues.

As of 6 a.m. ET, Delta Air Lines has canceled 52 flights on Christmas Day, while United Airlines has canceled 47.

Effective immediately, travelers must test negative for the virus within 72 hours of entering the Bahamas, regardless of vaccination status.

Puerto Rico is set to tighten its testing requirements for U.S. travelers amid the holiday travel season.