I normally ship Bonsai via Fedex ground and have shipped all over the United States. Unfortunately Fedex does not insure plant materials so I cannot guarantee delivery times or condition of the Bonsai. Having said that, I've shipped over 75+ trees in the last year and have not had any damage to the Bonsai. Delays on delivery have also been about 1 day at the most.
For heavier trees, I have found that shipping them in their ceramic pots guarantees damage to the pot. Unless you're willing to take the risk of breakage, I will remove the Bonsai from the pot and and ship the Bonsai to you without the pot and credit you the amount of the pot. The above photo gives you an idea of how I crate the bonsai without the pot.