Southeast Asia aviation market data

Southeast Asia aviation market at a glance

The top stats from the Southeast Asian aviation market are:

• Busiest airport: Singapore Changi (SIN)
• Biggest airline: AirAsia
• Country with the most airline capacity: Indonesia
• Top destination region: Asia Pacific

Airline capacity in Southeast Asia

How much airline capacity is there in Southeast Asia this month?

• Overall capacity in the Southeast Asia market rose by 1.7% in April 2026 compared with the same month last year, reaching 50.3 million seats.
• International capacity increased by 3.8%, whilst domestic capacity decreased by 0.7%.
• International capacity represents a 56% share of the market, and domestic capacity represents the remaining 44% market share.
  

*As of July 2025, international capacity is reported on a two-way basis (previously one-way departing).

Southeast Asian countries' air capacity

Which country in Southeast Asia has most flight capacity (domestic + international)?

• Indonesia remains the largest Southeast Asia market in April 2026 with 10.3m seats, despite a decrease in capacity of 0.9% compared to April 2025.
• Thailand is the next largest market in Southeast Asia with 7.9m seats, a 4.2% increase in capacity vs last year.
• Capacity in Vietnam and Malaysia declined this month by 5.3% and 2.4% respectively vs April 2025, following several months of growth.
• Volume-wise capacity increased most in the Philippines,where 687k seats were added - an increase of 13.4% vs last year.
  

Which Southeast Asian country has most domestic airline capacity?

• Indonesia is the largest domestic market in Southeast Asia, with 8.3m seats, a decline of 0.8% in capacity.
• The Philippines recorded the fastest growth in domestic capacity, up 15.9% compared to April 2025, adding 571,000 seats.
• Domestic capacity in Viet Nam and Malaysia fell by 465,000 and 386,000 seats, following several months of strong growth.
  

Top 10 largest airports in Southeast Asia (departing seats)

 Which is the busiest airport in Southeast Asia?

• Singapore Changi remains the largest airport in the region in April 2026 with 3.5m seats. This represents a 0.4% increase in capacity year-on-year.
• Kuala Lumpur and Bangkok are the second and third busiest airports, with capacity of 3.39m and 3.31m seats.
• Manila recorded the fastest growth of those in the Top 10, with capacity up 9.3% year-on-year to 2.9 million seats.

Top 10 largest airlines in Southeast Asia by seats

• AirAsia continues to be the region's largest carrier with 2.8m seats in April 2026, despite a 0.1% decrease year-on-year. This reflects both restructuring and network changes by the airline, weaker demand in regional markets, and industry-wide aircraft shortages and maintenance issues.
• Citilink and Cebu Pacific Air increased capacity at the fastest rates of 24.1% and 19.6% respectively vs last year.
• Vietjet and Lion Air reduced capacity at the fastest rate of 32.6% and 23.8% compared to April 2025, equating to 807,000 and 636,000 fewer seats, respectively.
• The region has scheduled traffic operated by 188 airlines at 269 airports.
  

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