These are recommended by the Visitors' Bureau.

Yellow Cab of San Diego
619-444-4444
Price (airport to hotel - one way): $35.00 - $40.00

Cloud 9/Super Shuttle
800-974-8885 
Our Price: $12.00 - one way (regular rate is $15.00).
Discount: Please use this link to receive a $ 3.00 discount each way for share ride & $ 10.00 discount off the Sedan.