Quickest 7h 35min
There are 4 flights3 buses1 train company operating 2 routes - Sunset Limited, Pacific Surfliner from TIJ to SAT. The cheapest train costs $247 and is 1d 5h 57min.
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There are 4 ways to travel from TIJ to SAT. 4 flights, 3 buses, 1 train and 1 by car are possible between the two areas. The by car from TIJ to SAT is the cheapest. The flight from TIJ to SAT is the fastest. The train operated by Amtrak running from SAN to SAS is the most convenient.
It's important to check each mode when booking your ticket so that you can find the best method for you. The cost of each type varies differently, so be sure to use Faretrotter to keep an eye out!