The closest airport to Caltech is Burbank Bob Hope (BUR). Ways to get to Pasadena Hilton:

• Shuttle ($25) 
  • Prime Time Shuttle
  • Supershuttle
• Taxi ($50+)

Los Angeles International (LAX) is further away but is served by all major airlines. Best options for getting from the airport are:

• Shuttle ($30)
  • Prime Time Shuttle
  • Supershuttle
• Taxi ($90+)
• Bus/Train ($11.75 total: $9 bus fare; $1.75 train fare plus $1 for TAP card)
  • Flyaway bus to Union Station
  • Then take the Gold Line train from Union Station to Del Mar Station