A
+31 Attapeu
+31
B
+28 Bokeo Province
+28
+26 Bolikhamsai Province
+26
C
+27 Champasak Province
+27
H
+21 Houaphanh Province
+21
K
+27 Khammouane Province
+27
L
+23 Luang Namtha
+23
+29 Luang Phrabang
+29
O
+32 Oudomxay Province
+32
P
+22 Phongsaly
+22
S
+23 Sainyabuli
+23
+28 Salavan
+28
S
+24 Savannakhet
+24
+26 Sekong
+26
V
+24 Vientiane (airport)
+24
+27 Vientiane Province
+27
X
+21 Xiangkhouang Province
+21