Yep, but don't forget to amortize the mileage on your car; let's say it cost you $15,000 new and you expect to get 150,000 miles out of it -- that works out to $0.10/mile. For a 710-mile round-trip (according to Mapquest), that's $71.00 of the cost of ownership of your car. Throw in another $5 towards your next oil change (about $20 every 3,000 miles), about $3 in wear on your tires, and you're up to $133.
And I just priced a ticket for 15 days from now (departing SAN
at 0900 and returning from PHX
at 1655 on 17-APR) for $108.20.