Can you just walk across the border from Mexico?

Pedestrians crossing into Tijuana at the San Ysidro crossing need to complete a Mexico Visitor's Permit (FMM ? FREE if the trip is 7 days or less and you cross by land) and present a passport. This form will be provided by the airline or at the port of entry. You can also complete this form online here.



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Given all relevant factors, the safest crossing is Laredo-Colombia Border Crossing, located on the Laredo-Colombia Solidarity International Bridge.

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While the Mexican authorities will almost certainly not ask for any proof of onward travel, the airline might, and to make matters worse enforcement is not always consistent. You should be prepared to show something. Not necessarily proof that you will leave Mexico but that you are going home eventually is enough.

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Temporary and Permanent Visa holders leaving Mexico
They will require your passport and your resident card. Once you have received your form, you may proceed to the airline desk. Upon reentry to Mexico watch the officer to be sure they do not mark you as a tourist and only give you 180 days.

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The most commonly-used is the San Ysidro Crossing (El Chaparral), but there's also the Otay Mesa Crossing. With so many travelers driving to Mexico from Los Angeles and driving to Mexico from San Diego, this is a popular route.

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All citizens of the United States must present a valid passport when entering Mexican territory by any means of transportation. There are no exceptions for minors. Stays less than 72 hours within the border area, do not require an Official Entry Immigration Form (FMM).

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All U.S. citizens need U.S. passport books if re-entering by air. Land and sea border crossings accept additional travel documents, such as U.S. Passport cards and Trusted Traveler cards. Child travelers have additional options - see the Traveling with Children section.

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