There are 4 buses1 train company operating 2 routes - Coast Starlight, Pacific Surfliner, 4 flights1 operating from El Cajon to Sunnyvale from El Cajon to Sunnyvale. The cheapest train costs $91 and is 9h 22min. The cheapest hyperloop costs $20 and is 30min.
Faretrotter is a travel aggregation resource that gathers travel company amenities and statistics and compares modes of transportation between cities. Use Faretrotter to plan your next trip, or purchase a ticket your next city.
There are 5 ways to travel from El Cajon to Sunnyvale. 4 buses, 2 trains, 4 flights, 1 hyperloop and 1 by car are possible between the two areas. The hyperloop operated by Hyperloop One running from Los Angeles to San Francisco is the cheapest and fastest. The train operated by Amtrak running from SAN to SJC 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!