SOUTHEAST ASIA AVIATION MARKET DATA

How much airline capacity is there in Southeast Asia? Find out with new data each month, detailing:

• Which is the busiest airport in the region?
• What is the biggest airline in Southeast Asia?
• Which Southeast Asian country has the most airline capacity?
• Which regions do most travellers from Southeast Asia visit?
• And more.

Find below flight data and analysis focused on the Southeast Asia aviation market, with data powered by OAG's Schedules Analyser. The data is updated monthly. Seats are calculated as departing seats (one-way).

How Much Airline Capacity is There in SouthEast Asia This Month?

• Overall capacity in the SE Asia region  grew by 4.3% compared to July 24 to 51.5 million seats.
• International capacity continues to grow at a faster rate than domestic capacity, with increases of 5.6% and 2.7%  respectively.
• International capacity represents a 54% share of the market, and domestic capacity represent the remaining 46% market share .
  
  *As of July 2025, international capacity is reported on a two-way basis (previously one-way departing).

Which sOUTHeAST aSIAN Country Has The Most Airline Capacity (Domestic + International)?

• Indonesia remains the largest SE Asia market with 10.9m seats, despite capacity reducing again this month by 3.4% compared to July 2024.
• Thailand is the next largest market in SE Asia, with 7.3m seats, a 4.8% increase in capacity vs last year.
• The markets showing the largest growth in seats are Vietnam and Malaysia again this month, with growth of 762,500 and 509,700 additional seats respectively compared with last year.
  
• Lao People's Democratic Republic is growing at the fastest rate this month, up 19.9% on last July.. 
  
  
• For more insight in to airline capacity, get in touch regarding our flight seat data here.

Which sOUTHeAST aSIAN Country Has The Most Domestic Airline Capacity?

• Indonesia is the largest domestic market in SE Asia, with 8.8m seats, despite a 6.8% reduction in capacity, meaning there are 642,800 fewer seats.
• Thailand increased domestic capacity most by volume, with growth of 397k seats vs last year, followed by Viet Nam with 378k and Malaysia with 373k additional seats compared to July 24.
• Domestic capacity in Cambodia has reduced further by a third to 22k seats.

Which is the Busiest Airport in SouthEast Asia?

• Singapore Changi remains the largest airport in the region, with 3.6m seats.  This represents an increase of 2.1% in capacity compared to last year. Kuala Lumpur, Jakarta and Bangkok Suvarnabhumi remain a close second, third and fourth busiest airports, with capacity of 3.32m, 3.25 and 2.22m seats each respectively.
• Within the Top 10 airports in the region, Vietnamese airports Hanoi and Ho Chi Minh City continue to grow at the fastest rate, up 13% and 11.4% respectively vs last year. 
  
• Within the Top 10, Makassar was the only airport to reduce capacity compared with July 24 by 2.7%.

Where do International Flights From SOUTHEAST Asia Go?

• SE Asia capacity to the rest of Asia Pacific remains the largest international market with 16.7m two way seats and increased by 4.6% (739k more seats) vs last year.
  
• International capacity within SE Asia, the next largest market with 6.8m seats, grew at a faster rate of 6.3% (403k more seats) vs June 24.
  
• Capacity to Africa is growing at the fastest rate this month increasing by 27.2% compared to last year, but remains a small market with 95,200 seats.
  
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