Vientiane US$75–135, two daily
Savannakhet US$35–65, four weekly
Siem Reap US$160, daily
Ho Chi Minh City US$170, four weekly
Bangkok US$165, four weekly
A cheaper way to Bangkok is to travel overland to Ubon Ratchathani and take a budget flight from there.
The airport is 3km northwest of town. A săhm-lór or tuk-tuk to the airport will cost about 40,000/50,000K.