Following the success of last year's inaugural TripAdvisor's Travelers' Choice awards for airlines, the 2018 award categories expanded to honor 69 airlines that provide exceptional value and service across the world.
In addition to the world list, the Traveler's Choice awards recognize the best airlines in seven regions including Asia, Europe, North America, Latin America, South Pacific & Oceana, Africa & Indian Ocean, and the Middle East.
The awards also recognize the top airlines in four distinct service classes: International First Class, Business Class, Premium Economy and Economy. The hallmarks of Travelers' Choice award winners are outstanding service, quality and value.
Congratulations again to all Southeast Asian airlines for always be the top choices for the global travelers. Continue to give the best out of best!
MAJOR AIRLINES category
SINGAPORE AIRLINES - SINGAPORE (Best Major Airlines)

ANA (All Nippon Airways) - JAPAN

ASIANA AIRLINES - SOUTH KOREA

CATHAY PACIFIC - HONG KONG

CHINA AIRLINES - TAIWAN

EVA AIR - TAIWAN

GARUDA INDONESIA - INDONESIA

JAPAN AIRLINES (JAL) - JAPAN

KOREAN AIR - SOUTH KOREA

THAI AIRWAYS - THAILAND

VIETNAM AIRLINES - VIETNAM

REGIONAL AIRLINES category
VISTARA - INDIA (Best Regional Airlines)
AIR ASTANA - KAZAKHSTAN

BANGKOK AIRWAYS - THAILAND

ROYAL BRUNEI AIRLINES - BRUNEI

SILK AIR - SINGAPORE

THAI SMILE - THAILAND

LOW-COST AIRLINES category
IndiGO - INDIA (Best Low-Cost Airlines)

CITILINK - INDONESIA

Source : https://www.tripadvisor.com/TravelersChoice-Airlines-cAsia