If you are traveling from the United States or Canada it is the least expensive to fly into San Diego and stay in one of the many low cost hotels in town. From San Diego you can travel by trolley (called the Metropolitan Transit System - MTS) down to the border for couple of dollars round trip. The trolley travels from Old Town in San Diego to San Ysidro at the border. You can park for free at each station and then just walk across the border at the end.
You can also drive to the border and pay for parking at the border there or take a bus.
Once at the border you must walk across the thruway and go threw a few gates and you come out at a taxi stand where a Bell Captain usually dressed in a yellow shirt (blue overcoat if it is winter) will escort you to one of the yellow cabs. The current cost of a cab is $5.00. The return cab ride is $7.00.

Blue line Trolley to Ysidro Border Station 
Helpful Information
- Baja California Tourism Information: (800) 225-2786
- Ensenada Convention & Visitor Bureau: (61) 78-2411. Blvd. Costero y Blvd. Teniente Azueta, #540, Ensenada, B.C. 22800.
- Mexico Travel Brochures: (800) 44-MEXICO
- Rosarito Convention & Visitor Bureau: (800) 962-BAJA. 907 #14 Centro Comercial Oeanna Plaza
Rosarito, B.C.
- The People’s Guide to Mexico. An Underground Compendium of Interesting Facts and FAQ’s. www.PeoplesGuide.com.
- San Ysidro Border Station Tourist Information: (619) 428-6200. 4570 Camino de la Plaza, San Ysidro, CA 92173.