The passport card was designed for the specific needs of northern and southern U.S. border communities with residents that cross the border frequently by land. The passport book is the only document approved for international travel by air.
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A valid passport book is required to enter Mexico by air, and those attempting to enter at an airport with a U.S. passport card only may be denied admission.
Beginning May 7, 2025, every air traveler 18 years of age and older will need a REAL ID-compliant driver's license, state-issued enhanced driver's license, or another acceptable form of ID to fly within the United States.
A valid passport book is required to enter Mexico by air, and those attempting to enter at an airport with a U.S. passport card only may be denied admission.
To clarify, U.S. citizens entering Mexico must present proof of citizenship (such as a certified copy of a birth certificate), photo ID and proof of sufficient funds. A passport and visa are not required of U.S. citizens entering Mexico for tourism or for transit for stays of up to 90 days.
Answer: No, you cannot travel internationally without a valid passport. Photocopies of passports are not acceptable. If you need your passport to travel internationally and do not have time to wait for routine processing, then you can apply for expedited passport renewal. By mail, this process takes 2-3 weeks.