The airport is on the southern side of town and is so close to many of the hotels that you can actually walk.
Cyclos can get you to the airport for about US$1. They're good for around town, but limit your cyclo riding to the daytime.
Nha Trang Taxi (tel: 824 000) and Khanh Hoa Taxi (tel: 810 810) have air-con cars with meters.
There are regular flights by Vietnam Airlines (tel: 826 768; Fax: 825 956; Add: 91 Nguyen Thien Thuan street) connecting Nha Trang with HCMC, Hanoi and Danang.
There is another branch of Vietnam Airlines (Tel: 822 753; Service from 7am to 11.30am and from 1.30pm to 5pm) at 1 Tran Hung Dao street.