Checklist of cities completed:

Neves, Steida

Marliko City, Steida

Kahe, Soisabu

Velrino, Tyroniea

Artuk Outpost, Tyroniea

Islandian City, Tipes Islands

Botario, Chinada

List of airlines:
(Bold & Italics = National Airline)

SteidAir (STA)
Tyron Bay Airlines (TBA)
Chinada Airlines (CHA)
BulwikAir (BWA)
Neves Airlines (NVA)
Tipes Air (TIA)
BloominiAir (BLA)
Wharian Airlines (WHA)
Bananair (BAN)
Yurskiy Airlines (YUR)
reporonia airlines (REP)
NiwovAir (NIW)
AntiAir (ATA)
Evergreen Airlines (EVE)
Nui Air (NUI)
Soisabu Long (SOA)
Evojet (EVA)
Rutajet Fleet (RTJ)
Rechka (RCH)
Airlines of the Bartix (ABX)
Irupan Air (IRU)
Chekania International Airlines (CHA)
Presidential Airlines (PDA)
Tyroniea Eastern Airlines (TEA)
Commune (COM)
Tashiran (TSH)
Bania (BNI)