A
+31 Attapeu
+31
B
+30 Bokeo Province
+30
+34 Bolikhamsai Province
+34
C
+27 Champasak Province
+27
H
+28 Houaphanh Province
+28
K
+25 Khammouane Province
+25
L
+29 Luang Namtha
+29
+32 Luang Phrabang
+32
O
+31 Oudomxay Province
+31
P
+24 Phongsaly
+24
S
+32 Sainyabuli
+32
+29 Salavan
+29
S
+27 Savannakhet
+27
+26 Sekong
+26
V
+28 Vientiane (airport)
+28
+33 Vientiane Province
+33
X
+28 Xiangkhouang Province
+28