Sacramento International Airport spokeswoman Laurie Slothower says Alaska Airlines flight 606 landed before 5 p.m.
Alaska Airlines spokeswoman Bobbie Egan says all 152 passengers left the aircraft without incident. There were no injuries.
A mechanic was checking out the aircraft, which departed Seattle at 3:08 p.m.
Egan says the crew diverted the Boeing 737 to Sacramento after the crew smelled a slight electrical odor. She says there was no smoke or fire.
She says passengers were being rescheduled to depart for Las Vegas on flights leaving Sacramento at 7 p.m. and 9 p.m.