Now, Bangkok Joins Singapore, Tokyo, Hong Kong, New Delhi, Taipei, London, Frankfurt, Seoul, Sydney, Melbourne, Kuala Lumpur, and Jakarta as Thai Airways’ Top Ten Busiest International Routes in 2025 – Travel And Tour World

Thai Airways International, a founding member of the Star Alliance, continues to serve as a vital link between Bangkok and the world in 2025. Operating flights to 56 international destinations across 30 countries and 9 domestic routes within Thailand, the airline remains a key player in global aviation. Known for its premium service and reliability, Thai Airways maintains a robust international network with a focus on high-traffic corridors that support both business and leisure travel.

Below is a breakdown of the airline’s top 10 busiest international routes based on weekly one-way seat capacity.

1. Bangkok – Singapore

The Bangkok–Singapore route stands as Thai Airways’ busiest international corridor, with an impressive five daily flights. Thai Airways operates a mix of widebody and narrowbody aircraft, including the Airbus A350-900, Boeing 787-8, and Airbus A320-200, offering a total of 9,765 one-way seats weekly. This route is a major business and leisure connection in Southeast Asia, linking two of the region’s largest financial hubs and serving as a key transit point for travelers connecting to other destinations in Asia.

2. Tokyo Narita – Bangkok

Japan remains one of Thai Airways’ most important markets, and the Bangkok–Tokyo Narita route is a key part of this relationship. Thai Airways operates three daily flights on this route using Airbus A350-900s and Boeing 777-300ERs, providing 6,930 weekly one-way seats. The route serves a balanced mix of business and leisure passengers, including tourists heading to Thailand’s beaches and cultural landmarks, as well as business travelers and cargo shipments between the two countries.

3. Bangkok – Hong Kong

The Bangkok–Hong Kong route is another critical connection for Thai Airways, with four daily flights operated by a combination of Boeing 777-200, Boeing 777-300ER, and Airbus A320-200 aircraft. The route, with a weekly seat total of 6,832 one-way seats, supports strong demand from both tourism and trade. Hong Kong serves as a vital financial hub and a gateway for passengers traveling further into mainland China, making it a significant part of Thai Airways’ regional network.

4. New Delhi – Bangkok

India is a key market for Thai Airways, with the Bangkok–New Delhi route serving as a prime example of this. Thai Airways operates 22 weekly flights on this route, deploying a mix of widebody aircraft, including the Airbus A330-300, Boeing 777-300ER, and Boeing 777-200, along with a weekly service using the smaller Airbus A320-200. This results in a total of 6,517 weekly one-way seats, reflecting the strong ties between Thailand and India in both business and tourism sectors.

5. Bangkok – Taipei

Taipei is another key East Asian destination in Thai Airways’ network, with three daily flights connecting Bangkok and Taiwan’s capital. The airline uses a mix of Boeing 777-300ER, Boeing 787-8, and Airbus A320-200 aircraft, providing 5,460 weekly one-way seats. Taipei serves as a hub for technology, trade, and culture, and this route caters to business professionals as well as tourists, particularly those visiting Thailand’s hospitality sector.

6. Bangkok – London Heathrow & Frankfurt

In a tie, two of Thai Airways’ most prestigious European routes—London Heathrow and Frankfurt—offer identical seat capacity, with two daily flights on Boeing 777-300ERs, each seating 348 passengers. This translates to 4,872 weekly one-way seats on each route. Both cities are crucial to Thai Airways’ European network, with London serving as a major business and tourism center and Frankfurt acting as a key Star Alliance hub for onward connections into Europe.

7. Seoul – Bangkok

South Korea has become one of Thailand’s fastest-growing inbound tourism markets, and Thai Airways capitalizes on this with 15 weekly flights between Seoul and Bangkok. All flights are operated using the spacious and modern Airbus A350-900, providing 4,815 weekly one-way seats. This route serves a combination of cultural ties, rising bilateral trade, and a growing number of tourists traveling between the two countries.

8. Bangkok – Sydney & Melbourne

Thai Airways’ routes to Sydney and Melbourne, two major Australian cities, share identical weekly seat capacity. Both cities are served daily with the fuel-efficient Airbus A350-900, providing 4,494 seats each week. Australia and Thailand share a strong tourism exchange, with Australians heading to Thai beaches and Thai expatriates and students making regular visits home. The A350-900’s comfort and efficiency make it well-suited for the long-haul flight.

9. Kuala Lumpur – Bangkok

A key regional route, Bangkok–Kuala Lumpur is served twice daily with the Boeing 787-9, offering a total of 4,130 weekly one-way seats. The Dreamliner provides an excellent combination of capacity and efficiency for this shorter regional route, which serves a significant number of business and leisure travelers connecting to broader destinations in Southeast Asia.

10. Bangkok – Jakarta

The Bangkok–Jakarta route rounds out Thai Airways’ top 10, with two daily flights—one on a Boeing 787-8 and another on an Airbus A350-900. This route provides 4,095 weekly one-way seats and underscores the strong connectivity between Thailand and Indonesia. As Southeast Asia’s most populous country, Indonesia continues to be a growing market for both inbound and outbound travel.

Bottom Line

In 2025, Thai Airways continues to balance aircraft efficiency, strategic route deployment, and premium service across its top international routes. Serving major cities like Singapore, Tokyo, Hong Kong, New Delhi, Taipei, London, Frankfurt, Seoul, Sydney, Melbourne, Kuala Lumpur, and Jakarta, Thai Airways demonstrates its commitment to connecting key global hubs while maintaining its full-service appeal. As the airline continues to recover and expand, it is well-positioned to meet the growing demand in these critical markets while offering travelers an exceptional experience in the skies.

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