A
+29 Attapeu
+29
B
+26 Bokeo Province
+26
+27 Bolikhamsai Province
+27
C
+24 Champasak Province
+24
H
+20 Houaphanh Province
+20
K
+26 Khammouane Province
+26
L
+23 Luang Namtha
+23
+22 Luang Phrabang
+22
O
+28 Oudomxay Province
+28
P
+21 Phongsaly
+21
S
+26 Sainyabuli
+26
+28 Salavan
+28
S
+23 Savannakhet
+23
+23 Sekong
+23
V
+25 Vientiane (airport)
+25
+27 Vientiane Province
+27
X
+20 Xiangkhouang Province
+20