A
+29 Attapeu
+29
B
+27 Bokeo Province
+27
+29 Bolikhamsai Province
+29
C
+27 Champasak Province
+27
H
+21 Houaphanh Province
+21
K
+21 Khammouane Province
+21
L
+25 Luang Namtha
+25
+25 Luang Phrabang
+25
O
+24 Oudomxay Province
+24
P
+20 Phongsaly
+20
S
+28 Sainyabuli
+28
+29 Salavan
+29
S
+24 Savannakhet
+24
+23 Sekong
+23
V
+27 Vientiane (airport)
+27
+29 Vientiane Province
+29
X
+22 Xiangkhouang Province
+22