A
+29 Attapeu
+29
B
+26 Bokeo Province
+26
+26 Bolikhamsai Province
+26
C
+24 Champasak Province
+24
H
+20 Houaphanh Province
+20
K
+24 Khammouane Province
+24
L
+24 Luang Namtha
+24
+26 Luang Phrabang
+26
O
+23 Oudomxay Province
+23
P
+16 Phongsaly
+16
S
+27 Sainyabuli
+27
+26 Salavan
+26
S
+23 Savannakhet
+23
+24 Sekong
+24
V
+27 Vientiane (airport)
+27
+27 Vientiane Province
+27
X
+22 Xiangkhouang Province
+22