Southeast Asia’s tourism economies are absorbing their second major shock in five years as the Iran conflict drives up energy prices and chokes long-haul travel demand. Visitor numbers to Cambodia’s Siem Reap province fell 37.5% in the first four months of 2026 against the same period a year earlier, while arrivals to Thailand from the Middle East dropped 57% in April 2026. Jet fuel prices rose roughly 30% between March and late May.
The damage lands hardest on micro-businesses with no buffer left after the pandemic. For tuk-tuk drivers and market vendors, a thin high season is not a forecast revision — it is lost rent and unpaid wages.
A tuk-tuk driver in Siem Reap who once earned up to USD 20 a day now takes home around five, half of it swallowed by fuel. That collapse, multiplied across hundreds of thousands of informal workers in Thailand, Vietnam and Cambodia, is the real story behind the Iran conflict’s tourism fallout. This is not a temporary price wobble.
It is the second economy-wide tourism shock to hit Southeast Asia in under five years, and the region’s most travel-dependent corners may not survive a third. International tourist arrivals to ASEAN economies had not yet returned to 2019 levels when the war broke out on February 28, 2026. Now jet fuel costs have surged, airlines are cutting capacity, and European and Middle Eastern bookings are evaporating.
Tourism accounts for roughly 13% of Thailand’s GDP and nearly 11% of the region’s combined output. When that engine stalls, the people without contracts feel it first. The question is no longer whether recovery slows — it is whether the model itself still works.
ALSO WORTH READING
How a Persian Gulf war reaches a Siem Reap restaurant
The transmission runs through fuel. Global jet fuel spot prices tracked by the International Air Transport Association rose by roughly 30% between early March and late May 2026, reversing the easing trend of late 2025. Airlines have passed the cost straight to passengers, and Europe–Asia economy fares have jumped sharply as carriers reroute around closed airspace.
Cathay Pacific’s long-haul fuel surcharge more than doubled, from 569 to 1,362 Hong Kong dollars. Lavinia Lau, the airline’s Chief Customer and Commercial Officer, confirmed jet fuel sits at highly elevated levels and noted travellers are booking closer to departure — a tell that confidence is thin.
The arithmetic is brutal for those at the bottom. Cambodia is the clearest case: tourism directly and indirectly accounted for 20.4% of its GDP and nearly a fifth of total employment in 2019. A 37.5% arrival drop in Siem Reap is not a statistic there — it is empty guesthouses around Angkor Wat and restaurateurs who cannot cover wages.
Albert Park, Chief Economist at the Asian Development Bank, put the mechanism plainly: the conflict will weigh on growth mainly through higher production costs and consumer prices, alongside weaker external demand from trade and tourism. The honest limit on all of this: arrival data captures volume, not which destinations bleisure travellers are quietly substituting toward cheaper or closer alternatives, so the redistribution within the region remains harder to map than the headline declines suggest.
Why a tourism model built on cheap fuel keeps breaking
Southeast Asia’s growth story leaned on two assumptions: cheap long-haul flights and cheap imported energy. Both are now unreliable. International arrivals to Vietnam reached 15.5 million in 2025, still short of the 18 million peak in 2019 — the recovery was incomplete before the war even began.
Malaysia tells the same story, with 20.1 million arrivals in 2025 against 26.1 million in 2019. These are not economies bouncing back and stumbling. They are economies that never finished standing up.
This is where the real vulnerability lives. A region that depends on global flight connectivity and imported fossil fuel is structurally exposed to every geopolitical choke point between here and its source markets — and the Strait of Hormuz is the choke point that matters most.
Marie Diron, Managing Director for Sovereign Risk at Moody’s Ratings, warned that a sustained oil price spike tied to instability around Iran could shave up to 0.4 percentage points off Asia-Pacific growth, hitting the most open, tourism-reliant economies hardest. Thailand’s THB 100-billion Tourism Rehabilitation Fund, approved in 2022, remains the main support tool — and has not been expanded for this shock.
Beyond the headline
The human cost
Behind the macro forecasts are workers in Siem Reap and southern Thailand who never rebuilt their savings after COVID-19 and now watch their second high season in five years evaporate. For tuk-tuk drivers, dive instructors and market vendors on informal contracts, a few thin months can mean selling assets, pulling children from school, or migrating for precarious construction work.
The bigger picture
The Iran conflict is exposing how heavily Southeast Asia’s growth leans on cheap long-haul travel and imported fossil fuels. Repeated crises since 2020 point to a structural mismatch between these tourism economies and a world of volatile energy and geopolitical choke points. The open question is how many flight-dependent destinations stay viable without diversifying both visitor base and energy mix.
The response gap
Governments celebrate headline visitor counts while airlines pass fuel costs to passengers, yet little shields the smallest operators from income volatility tied to a distant war. Existing credit lines and tax breaks mostly reach larger firms, leaving micro-enterprises to absorb each shock alone. That gap between where support lands and where livelihoods are fragile will magnify the damage if the war drags on.
What the Iran shock means for your travel and money decisions
With peak summer bookings underway and no Iran-specific relief packages announced as of late May 2026, four groups face concrete decisions now.
- European tour operator with Southeast Asia packages
Reprice your summer and autumn packages against current fuel surcharges, and stress-test the cash position of your local ground partners — the smallest are absorbing currency depreciation and LPG inflation simultaneously. Build flexible-routing options that avoid Middle East airspace into your itineraries rather than waiting for cancellations.
- Western parent of a university student in Thailand
Check current US State Department, UK FCDO and Australian Smartraveller advisories before booking any visit flight, and register your child with the STEP program. Budget for elevated peak-season fares to Bangkok and agree a contingency plan with them in case airspace disruptions force last-minute reroutings.
- US-based investor with APAC emerging market exposure
Reassess holdings in Hong Kong and Singapore-listed aviation, which have underperformed regional indices by double digits since February. Watch the Thai baht and other energy-importer currencies for depreciation pressure that raises local operating costs across your tourism and hospitality positions.
- Digital nomad currently based in Vietnam
Track local cost-of-living shifts as energy and goods inflation feed through, and price your next move early — flight options out of Ho Chi Minh City are thinner and dearer this summer. Verify your e-visa validity and renewal timing before peak processing delays set in.
FAQ
Does the worldwide caution mean I cannot travel to Thailand, Vietnam or Cambodia?
No. The US worldwide caution linked to the Iran war does not bar travel to these countries. It advises Americans to prepare for sudden airspace closures, longer routings and possible disruptions on flights transiting the Middle East. Register with the STEP program, monitor alerts from the nearest US embassy, and watch for airline schedule-change notifications before and during your trip.
Can I rebook or get a refund if the conflict forces my flight to change?
Often, yes. Many carriers serving Southeast Asia retain pandemic-era flexibility, including changeable tickets with modest fees or credit vouchers when routes are cancelled or significantly rescheduled. Conditions vary by fare class and airline, so review each carrier’s disruption and conditions-of-carriage page before purchase to confirm whether you can rebook or reroute without heavy penalties.
What entry visa do Western travellers currently need for these destinations?
As of late May 2026, US, Canadian, Australian and most EU passport holders enter Thailand visa-exempt for 30 days. Vietnam requires an e-visa for most, costing roughly USD 25 to 50 with a stated three-working-day processing time, though several EU states have unilateral exemption. Cambodia issues a 30-day tourist e-visa around USD 36 to 40. Rules change without notice — verify on official portals.
Explainer
- ASEAN
- The Association of Southeast Asian Nations, a ten-member bloc including Thailand, Vietnam, Cambodia, Malaysia and Indonesia. Founded in 1967, it coordinates economic and political cooperation across a combined population of over 670 million. Tourism contributed nearly 11% of the bloc’s economic activity in 2019, a concentration that makes its open, import-dependent members acutely exposed to energy-price shocks like the current one.
- Strait of Hormuz
- A narrow shipping channel between Iran and Oman through which roughly a fifth of the world’s oil supply passes. Its proximity to the Iran conflict makes it the single most sensitive choke point for global energy prices. Disruption there feeds directly into jet fuel costs, which is why a Persian Gulf war can empty guesthouses in Siem Reap thousands of kilometres away.
- Tourism Rehabilitation Fund
- Thailand’s THB 100-billion soft-loan programme approved in 2022 to support tourism businesses through the pandemic recovery. Administered as concessional credit, it remains the country’s primary formal support tool for the sector. It has not been expanded in response to the Iran-linked energy shock, leaving smaller operators exposed as fuel and goods inflation erode their margins.
