All international trips require a valid passport.
Please note that most countries will not permit a traveler to enter the country unless the passport is set to expire at least six months after the final day of travel.
It can take 6-8 weeks to process a passport application, which can be submitted at select area USPS offices. Passport processing can be expedited for an additional fee. (As of December 2019, $60 per expedited passport request.)
For more information on passport applications, fees, and requirements, visit the U.S. Department of State website.