Quick summary
Long Thanh International Airport (LTH), located 40km east of Ho Chi Minh City, is scheduled to begin commercial operations in Q4 2026, with construction 74% complete as of March 2026. The new hub will handle 25 million passengers annually in Phase 1, absorbing long-haul traffic from Europe, North America, India, and the Middle East first, while Tan Son Nhat (SGN) remains the primary domestic gateway through 2027.
The shift will ease SGN’s chronic 120%+ capacity overload, cutting delays by 20-30% and enabling 15 million more seats annually by 2027. Travelers booking Ho Chi Minh City trips from mid-2026 onward should monitor airline transition notices 60 days before departure, as carriers like Vietnam Airlines and Qantas are expected to move long-haul services to LTH first.
Vietnam’s $16 billion Long Thanh International Airport project reached a critical milestone in December 2025 when Vietnam Airlines, Vietjet Air, and Bamboo Airways completed the first technical flights on the newly finished 4,000-meter Runway 1. Prime Minister Pham Minh Chinh has now set a Q4 2026 target for full commercial launch, adjusting from the earlier June timeline to allow construction teams to finish terminal facilities by September.
For travelers, the opening marks the end of Tan Son Nhat’s decade-long capacity crisis. SGN currently processes 45 million passengers per year at 120% of design capacity, causing 2-3 hour delays during peak periods and blocking new long-haul route applications. LTH’s Phase 1 will initially handle 2.6 million passengers, ramping to 15 million by end-2027 and 25 million long-term, with priority given to intercontinental flights.
The long-haul shift from SGN begins with European, North American, Indian, and Middle Eastern routes, while Northeast Asian and regional Southeast Asian services remain at Tan Son Nhat until 2027. Domestic traffic will stay 90% at SGN, with only 5-10% feeding international connections at LTH.
Construction status and ground access
As of March 2026, contractors have completed VND 64.1 trillion (US$2.4 billion) of the Phase 1 budget, representing 74% of the $4.6 billion first-phase investment. Runway 1 was finished ahead of schedule in April 2025, with lighting systems tested and calibration underway. The Q4 2026 commercial launch depends on completing terminal buildings, taxiways, and apron infrastructure by September.
Ground access remains the operational wildcard. LTH sits 40km east of central Ho Chi Minh City in Dong Nai province, compared to SGN’s 7km distance. The government is fast-tracking a 40km Tan Son Nhat—Long Thanh expressway and the Bien Hoa—Vung Tau corridor, with urban rail extensions to Suoi Tien and Bien Hoa planned for post-2026. Until rail opens, travelers face a 45-60 minute highway transfer costing VND 300,000-500,000 (US$12-20) via expressway bus or ride-hailing services.
| Milestone | Date | Passenger capacity | Primary traffic |
|---|---|---|---|
| Technical flights | December 2025 | 0 (testing only) | Calibration |
| Commercial launch | Q4 2026 | 2.6 million/year | Long-haul international |
| Phase 1 ramp-up | End-2027 | 15 million/year | Long-haul + Northeast Asia |
| Phase 1 full capacity | Post-2027 | 25 million/year | All international + 5-10% domestic |
The staggered rollout means flights to Vietnam from Australasia on carriers like Qantas, Vietnam Airlines, and Singapore Airlines will likely move to LTH between Q4 2026 and mid-2027, while budget carriers serving regional routes stay at SGN through 2027.
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What changed: capacity crisis to breathing room
Tan Son Nhat has operated at 120%+ capacity since 2019, processing 45 million passengers annually in a facility designed for 38 million. The overload manifests as 2-3 hour immigration queues, gate holds for lack of parking stands, and a de facto freeze on new long-haul route applications. Airlines wanting to add frequencies to Ho Chi Minh City have been told to wait for Long Thanh.
LTH’s Phase 1 will absorb 20-30% of SGN’s traffic by moving long-haul flights first. This creates immediate relief: shorter waits at SGN for domestic travelers, and 15 million new annual seats at LTH by 2027. The capacity injection typically drives fares down 10-15% on competitive routes as airlines add frequencies and new entrants launch service.
The trade-off is geographic. SGN sits 7km from District 1; LTH is 40km out in Dong Nai. Until the planned urban rail opens (timeline unconfirmed), travelers add 25-40 minutes of highway transfer time compared to the old SGN arrival. Budget an extra hour for LTH connections until ground infrastructure catches up.
Reconfirm bookings 60 days before departure
Airlines will transition long-haul routes to LTH between Q4 2026 and mid-2027, but the exact schedule remains fluid as construction progresses.
- Monitor airline notices: Check Vietnam Airlines, Qantas, Singapore Airlines, and other long-haul carriers’ websites 60 days before departure for airport change notifications. Bookings made for SGN may be moved to LTH without proactive passenger notification.
- Factor transfer time: If connecting through Ho Chi Minh City, allow 3-4 hours between an LTH arrival and an SGN departure until ground links improve. Same-airport connections at LTH will use standard 2-hour buffers once the hub is fully operational.
- Pre-book ground transport: Expressway buses and ride-hailing services will be the only LTH access options at launch. Book in advance during peak travel periods (Tet, summer holidays) to avoid 1-2 hour waits for available vehicles.
- Set fare alerts: New capacity typically drives fares down 10-15% within 6-12 months of a hub opening. Use Google Flights or airline apps to track routes you fly frequently and book when prices drop.
Watch: Airports Corporation of Vietnam (ACV) will publish the final airline transition schedule in Q3 2026, confirming which carriers move to LTH first and which routes remain at SGN through 2027.
Questions? Answers.
Which airlines will operate from Long Thanh at launch?
Vietnam Airlines, Vietjet Air, and Bamboo Airways completed technical flights in December 2025, signaling they will be among the first carriers at LTH. Long-haul operators serving Europe, North America, India, and the Middle East are prioritized for the Q4 2026 launch, while regional and Northeast Asian carriers will transition in 2027. Qantas, Singapore Airlines, and Emirates are likely early movers given their intercontinental route networks.
Will domestic flights move to Long Thanh?
No. Tan Son Nhat will remain Vietnam’s primary domestic hub through 2027 and beyond, handling 90-95% of domestic traffic. Long Thanh will carry only 5-10% domestic passengers in Phase 1, primarily those connecting to international flights. The two-airport system mirrors Bangkok’s Suvarnabhumi (international) and Don Mueang (domestic) split, though LTH will eventually handle some domestic traffic as capacity grows.
How does Long Thanh affect SkyTeam and Star Alliance connections?
Vietnam Airlines (SkyTeam) will consolidate long-haul operations at LTH, improving connection quality for codeshare partners like Delta Air Lines and Air France. The new hub also opens slots for Star Alliance competitors to add frequencies, potentially bringing ANA, Lufthansa, or United Airlines service by 2027. Better infrastructure and reduced congestion make Ho Chi Minh City a more attractive transit point for alliance networks competing with Singapore and Bangkok.
What happens if ground transport to Long Thanh delays?
The 40km Tan Son Nhat—Long Thanh expressway is prioritized for completion before the airport opens, but urban rail extensions to Suoi Tien and Bien Hoa have no confirmed timeline. If rail delays, travelers will rely on highway buses (VND 300,000/US$12) or taxis (VND 500,000-1,000,000/US$20-40) for the 45-60 minute transfer. Budget an extra hour compared to SGN’s 20-minute city access, and pre-book transport during peak periods to avoid vehicle shortages.
Should I book flights to SGN or LTH for late 2026 travel?
Book as usual to SGN (Ho Chi Minh City’s IATA code) — airlines will notify passengers if your flight moves to LTH after the Q4 2026 launch. Most booking systems will continue using SGN as the city code even after LTH opens, similar to how Tokyo uses TYO for both Narita and Haneda. Reconfirm your arrival airport 60 days before departure, especially for long-haul flights from Europe, North America, or Australia, as these routes will transition to LTH first.
