Emergency Measures Take Flight
South Korea’s aviation industry has shifted into crisis mode as fuel surcharges on international flights surged by as much as threefold in April 2026, with major carriers implementing emergency management systems to survive the financial shock. Korean Air, the country’s largest airline, raised its one-way international fuel surcharge from a range of 13,500 won to 99,000 won in March to between 42,000 won and 303,000 won this month. On long-distance routes to North American cities including New York, Chicago, Washington, and Toronto, passengers now face charges of 303,000 won, representing a 3.1-fold increase from the previous month.
The dramatic price hikes stem from a perfect storm of geopolitical conflict and currency volatility. The ongoing war involving Iran has disrupted global oil supplies through the Strait of Hormuz, causing jet fuel prices to more than double while the Korean won has weakened significantly against the dollar. With fuel accounting for approximately 30 percent of airline operating costs, carriers are scrambling to transfer these expenses to passengers while simultaneously slashing unprofitable routes and freezing investments.
The Sticker Shock: Breaking Down the New Rates
The financial impact on travelers varies dramatically depending on destination and carrier choice. Asiana Airlines, which is currently integrating with Korean Air under regulatory oversight, increased its surcharge range from 14,600 won to 78,600 won in March to between 43,900 won and 251,900 won for April tickets. Low-cost carriers that denominate fuel surcharges in U.S. dollars have enacted similarly steep increases, with Jeju Air raising rates from between $9 and $22 last month to between $29 and $68 this month.
The pain is particularly acute for families planning long-haul travel. A round-trip ticket to New York now carries an additional fuel burden of approximately 400,000 won per passenger compared to March pricing. For a family of four, this translates to an extra 1.6 million won in costs before accounting for base fare increases. Even short-haul routes have not escaped the surge, with flights under 499 miles to destinations like Fukuoka and Qingdao seeing fees jump from 13,500 won to 42,000 won.
Air Premia, a mid-to-long-haul specialist carrier, has increased surcharges on its New York routes from $57 to $194, while T’way Air’s Paris flights now carry surcharges of 213,900 won, up from 67,600 won. Industry analysts warn that the full impact of post-war oil price spikes has not yet been reflected in April surcharges, as the calculation benchmark includes prices from mid-February to mid-March, partially predating the conflict escalation.
The Mechanics of a Global Oil Crisis
To understand why ticket prices have exploded, it is essential to examine the interconnected factors driving aviation fuel costs. The Mean of Platts Singapore (MOPS), the benchmark for refined oil prices used by Korean carriers, jumped from $90 per barrel before the war outbreak to $197 per barrel by late March. This spike followed Iran’s effective closure of the Strait of Hormuz, a chokepoint through which approximately one-fifth of global oil shipments typically pass.
Korean airlines utilize a 33-tier pricing system to calculate fuel surcharges based on Singapore jet fuel averages over one-month periods. April surcharges reflect the price average from February 16 to March 15, which landed at Level 18, up twelve tiers from Level 6 in March. This marks the steepest monthly jump since the current mechanism was introduced in 2016, surpassing even the eight-tier increase observed over three months during the Russia-Ukraine war in 2022.
Compounding the fuel price crisis, currency fluctuations have amplified cost pressures. The won-dollar exchange rate, which stood near 1,440 won per dollar before the Middle East conflict, surpassed 1,500 won on March 19 and has remained elevated. Since airlines purchase jet fuel in dollars while earning revenue primarily in won, this currency weakening effectively increases fuel costs beyond the raw commodity price hike. Korean Air alone consumes approximately 30 million barrels annually, meaning each $1 increase in oil prices adds roughly 45 billion won in yearly expenses.
Airlines Declare Emergency Management Mode
Faced with unsustainable cost structures, Korean carriers have initiated emergency protocols reminiscent of pandemic-era survival strategies. Korean Air officially entered emergency management mode on April 1, following similar declarations by T’way Air on March 16 and Asiana Airlines on March 25. These measures involve company-wide cost reductions, investment freezes, and operational adjustments based on oil price thresholds.
In an internal memo viewed by multiple news outlets, Korean Air Vice Chairman Woo Ki-hong informed employees that April fuel costs would reach approximately $4.50 per gallon, more than double the $2.20 assumption built into the company’s annual business plan. Woo characterized the measures as structural necessities rather than temporary fixes.
These moves are not merely a one-time initiative but a chance to strengthen our structural foundation. If the high oil price situation persists, it could seriously disrupt the achievement of our annual business targets.
The emergency declarations have already translated into concrete service reductions. Jin Air has suspended 45 round-trip flights across eight routes in April, including services from Incheon to Guam and Nha Trang. Air Premia has cut 26 flights on its Incheon-Los Angeles route and six on its Honolulu service, while also reducing San Francisco and New York frequencies. Aero K will suspend routes from Cheongju to Ibaraki, Narita, Clark, and Ulaanbaatar between April and June, and Eastar Jet plans to cut approximately 50 flights on its Incheon-Phu Quoc route in May.
Travelers Rush to Lock In Rates as Demand Patterns Shift
The surcharge announcements triggered a booking frenzy among price-sensitive travelers attempting to secure tickets before the April price increases took effect. Travel agencies including Hana Tour and Mode Tour reported surging requests for early ticket issuance, with customers asking to complete purchases for April and May travel in March to avoid the higher fees.
However, the rush to book has not translated into sustained demand strength. Industry insiders report that ticket inquiries are increasingly concentrating on short-haul routes rather than long-haul destinations, suggesting travelers are trading down to cheaper options. An official at one major Korean carrier noted that while the surcharge increases help offset losses, they do not fully cover the rising oil prices.
After the fuel surcharge announcement, ticket inquiries are on the rise, but mainly on short-haul routes rather than long-haul ones. If this trend continues, surcharges will climb even higher in May, and if it drags on, it becomes truly dangerous.
Some travelers are canceling planned trips entirely. One prospective tourist planning a September visit to Spain saw projected costs jump from 1.6 million won to 2.4 million won, prompting reconsideration of the journey. Naver, Korea’s largest online portal, posted warnings that airfares could rise by up to threefold starting in April, advising customers to complete bookings before month-end.
Global Aviation Industry Faces Similar Strain
While Korean carriers have enacted the most dramatic surcharge increases, the crisis extends across the Asia-Pacific region and beyond. Taiwanese airlines raised international fuel surcharges by 157 percent on April 7, while Chinese carriers including China Eastern have warned that geopolitical conflicts will significantly impact operations this year. Authorities in Beijing have reportedly ordered domestic oil refineries to halt fuel exports to preserve supplies for local airlines.
In Japan, All Nippon Airways has avoided immediate surcharge increases for April and May tickets because prices were set before the war escalation, though the airline acknowledges limited impact for now due to advance fuel hedging. Singapore Airlines and its budget subsidiary Scoot have raised fares across all routes, with fuel costs representing approximately 30 percent of the group’s recent spending.
The Philippines became the first nation to declare a national energy emergency on March 24, with President Ferdinand Marcos warning that grounding planes due to fuel shortages represents a distinct possibility. Vietnam’s aviation authority has cautioned that jet fuel shortages could materialize as early as April because suppliers are delaying deliveries, forcing Vietnam Airlines to suspend 23 weekly domestic flights.
United States carriers are not immune to the pressure. United Airlines CEO Scott Kirby announced the cancellation of approximately 5 percent of planned flights for the year, noting that if current jet fuel prices persisted, the airline would face an additional $11 billion in annual fuel expenses, more than double the company’s best-ever annual profit.
The reality is, jet fuel prices have more than doubled in the last three weeks. For perspective, in United’s best year ever, we made less than $5 billion.
Key Points
- Korean Air raised one-way fuel surcharges to between 42,000 won and 303,000 won in April, a 3.1-fold increase on long-haul routes compared to March
- Jet fuel prices have doubled from approximately $90 per barrel to $197 per barrel since the Iran war disrupted supplies through the Strait of Hormuz
- Korean Air, Asiana Airlines, and T’way Air have all declared emergency management modes to implement cost-cutting measures
- Multiple low-cost carriers including Jin Air, Air Premia, and Air Busan have suspended or reduced international routes to minimize losses
- Industry analysts warn May fuel surcharges could reach Tier 33, the maximum level in Korea’s pricing system, potentially adding 500,000 won to U.S. round-trip tickets
- The won-dollar exchange rate has weakened from 1,427 to over 1,530, compounding fuel cost pressures for Korean carriers who pay for fuel in dollars
- Global airlines including United, Singapore Airlines, and carriers across Taiwan, China, and Southeast Asia have enacted similar price increases and capacity cuts
