Minimum waiting period between two trips to the USA with an ESTA
Travelers are not allowed to leave the United States for short periods of time and then return only to renew the 90-day validity period. Despite this, there is no official minimum required waiting period between two trips to the United States with ESTA. When re-entering the U.S., U.S. Customs and Border Protection officers will assess each situation. If they suspect that the traveler has left the U.S. with the sole intention of extending the 90-day validity period, the ESTA will be revoked. Travelers who want to travel to the U.S. frequently and stay longer may apply for a visa that is not subject to these rules.