A
+40 Attapeu
+40
B
+31 Bokeo Province
+31
+35 Bolikhamsai Province
+35
C
+37 Champasak Province
+37
H
+27 Houaphanh Province
+27
K
+33 Khammouane Province
+33
L
+32 Luang Namtha
+32
+26 Luang Phrabang
+26
O
+25 Oudomxay Province
+25
P
+25 Phongsaly
+25
S
+35 Sainyabuli
+35
+38 Salavan
+38
S
+37 Savannakhet
+37
+28 Sekong
+28
V
+29 Vientiane (airport)
+29
+35 Vientiane Province
+35
X
+29 Xiangkhouang Province
+29