Editor's Note — This listing was last updated in full on October 4.
(CNN) — Almost all travel restrictions between US states have been lifted since the spring and early summer of 2021. As we enter the fall travel season, the Delta variant wave has begun to subside in some of the hardest-hit areas. Since the start of the pandemic, total cases of Covid-19 have reached around the 43.7 million mark in the United States. As of October 4, the Centers for Disease Control and Prevention still warned against nonessential travel for people who are not fully vaccinated. Fully vaccinated travelers do not need to self-quarantine, and they don't need to test negative before or after their travels unless the destination requires it, CDC guidance says.
They are still required to wear masks on public transportation and in transportation hubs such as airports and are advised to wear masks in indoor public places with significant Covid transmission.
If you do decide to travel to another state or territory, you should still check out the latest local guidance before you go. Even though almost all states have dropped their travel restrictions, their official websites have important Covid-19 safety information you still need to know and rules you'll be expected to follow.
This list is alphabetical and includes links to state websites:
The U.S. Space & Rocket Center is open in Huntsville, Alabama. Face masks are required inside buildings and on simulators.
Jeffrey Isaac Greenberg/Alamy
UPDATE: There are no statewide travel restrictions in Alaska. Pre-travel testing isn't required, but it's highly encouraged and free at participating airports. All travelers to Alaska can get a free Covid-19 vaccine at participating airports. Check here for updates and safety guidance.
Wildfire update as of October 4: Lassen Volcanic National Park is still closed, and most facilities and roads in Sequoia and Kings Canyon national parks are closed.
The picturesque West Cornwall Covered Bridge goes over the Housatonic River.
Tim Graham/Getty Images
Connecticut no longer has travel restrictions. Covid-19 tests and quarantines for nonvaccinated travelers are now just recommended but not required. Travelers are asked to follow CDC travel guidelines. Please check here for updates.
UPDATE: As of October 4, Hawaii still had the strictest entry requirements of any state. People who aren't fully vaccinated still need a negative Covid-19 test to enter. Check here for updates and safety guidance.
Bikers ride on a biking and hiking path that crosses Chatcolet Lake in northern Idaho.
Don & Melinda Crawford/Education Images/Getty Images
Chicago has separate system that advises Covid-19 testing or quarantine if the unvaccinated visitor comes from a state with a significant infection rate. As of September 29, there were 48 states and three territories on the "orange list" that asks for testing or quarantine.
While mostly open, Kansas has had some rather specific quarantine requirements based on previous travel destinations and when you went there. They are subject to frequent change. Check here for updates and more details.
Boats dock at the marina in Dale Hollow Lake State Resort Park in Kentucky near the border with Tennessee.
Jim Lane/Education Images/Universal Images Group/Getty Images
Sandy Point State Park on Chesapeake Bay is a popular outdoor gathering spot.
Michael Robinson Chavez/The Washington Post/Getty Images
Wildlife spotting draws people to Montana. Especially thrilling is catching a sight of bison.
Domestic visitors to New Hampshire no longer need to quarantine or take a Covid-19 test to travel to New Hampshire, but it is still recommended to get tested three to five days after arrival. However, people who have had traveled internationally within 10 days of arriving in New Hampshire or have been on a cruise ship do need to follow testing and quarantine protocols unless they meet certain exceptions. Check here for important details.
New York City's subway system is in full operation. Masks are still required in indoor stations and on trains.
UPDATE: There are no statewide travel restrictions in New York state; however, you are expected to follow vaccine and testing rules for entry into various sites of interest to tourists. Check here for updates and safety guidelines.
Philadelpia's skyline as seen from the South Street Bridge.
Bastiaan Slabbers/NurPhoto/Getty Images
Fully vaccinated travelers to this US commonwealth island must upload their vaccination card to the island's online portal, which will generate a QR code. Nonvaccinated travelers on domestic flights must have a negative result from a Covid-19 test taken within 72 hours of arrival. If you come without a test, you must test with 48 hours of arrival and quarantine pending results. Check here for updates and details.
Domestic travelers -- fully vaccinated or not -- do not need to quarantine if it's been at least 14 days since your final vaccine, and you have not showed symptoms of Covid-19 before traveling to Rhode Island.
The Citadel's campus is one of many standout architectural spots in Charleston.
Vermont no longer has testing or quarantine requirements for domestic visitors. Check here for updates, gathering limitations and mask rules for unvaccinated people.
A view of the fall colors along Skyline Drive in Shenandoah National Park in Virginia.
Karen Bleier/AFP/Getty Images