A
+27 Attapeu
+27
B
+28 Bokeo Province
+28
+30 Bolikhamsai Province
+30
C
+27 Champasak Province
+27
H
+24 Houaphanh Province
+24
K
+30 Khammouane Province
+30
L
+25 Luang Namtha
+25
+28 Luang Phrabang
+28
O
+24 Oudomxay Province
+24
P
+22 Phongsaly
+22
S
+28 Sainyabuli
+28
+28 Salavan
+28
S
+28 Savannakhet
+28
+25 Sekong
+25
V
+26 Vientiane (airport)
+26
+29 Vientiane Province
+29
X
+21 Xiangkhouang Province
+21