There are several flights arriving from Mexico. Specifically, Mexicana has a daily flight from Mexico City and Cabo San Lucas and weekly from Puerto Vallarta, United has 1 flight from Cancun, and Frontier has flights from Cancun (2), Puerto Vallarta, Cozumel, Ixtapa/Zihuatanejo, Cabo San Lucas, Guadalajara, and San Jose, Costa Rica. In addition to the numerous charter flights operating to Mexican beach destinations. So, customs and immigrations is a bit busier than just 3 European flights per day, albeit much less than LAX.