Flight
Los Angeles International may have better flight options and is about 2 hours from San Marcos. San Diego International is closer, at 45 minutes away. John Wayne Airport (SNA) and Long Beach Airport (LGB) are just over an hour away but have additional flight options if needed.
Travel Note
There are several hotels within 10-15 minutes of the venue. There are also quite a few reasonable AirBNBs that would be great for smaller groups. We do not have a hotel block due to the multiple options around.