Traveling with a group to the United States, can I postpone going to more cities without going back with the group?

Of course. As long as it does not exceed the time allowed by the visa to stay in the United States (you can apply for an extension). For example, your visa allows you to stay in the United States for three months, and the tour will end in one month. You can travel freely for two months and then go back.

However, the American Travel Network would like to remind that many tour groups have signed agreements, which may not allow members to leave or stay after the trip, and even find that leaving the group without authorization may call the police. After all, if someone leaves illegal immigrants without permission, the organizer (travel agency) may be responsible.

Therefore, if you plan to travel outside the group, you must communicate and coordinate with the tour organizers in advance.