By Air: The most convenient way to reach San Diego for most travelers is by flying into San Diego International Airport (SAN). The airport is well-connected to numerous domestic and international destinations. Check for direct flights or connecting flights from your location. By Car: San Diego is easily accessible by car via major highways. If you're driving from Los Angeles, take Interstate 5 South, which is approximately a 2-hour drive. From Las Vegas, take Interstate 15 South, which takes about 5-6 hours. Remember to factor in traffic and potential delays. By Train: Amtrak operates the Pacific Surfliner train service, which connects San Diego to various cities along the California coast, including Los Angeles, Santa Barbara, and San Luis Obispo. The train ride offers beautiful coastal views and arrives at the Santa Fe Depot in downtown San Diego.