Key HighlightsPresident Trump announced a 14-day U.S.-Iran ceasefire agreement late Tuesday eveningBrent crude plummeted up to 16%, trading near $94.30 per barrelMajor carriers including United, Delta, American, JetBlue, and Southwest surged 4–9% before market openCritical Strait of Hormuz shipping lane, carrying 20% of worldwide fuel, poised for reopeningAviation industry faced projected $11 billion in additional jet fuel expenses this year amid escalating oil costsMajor U.S. airline carriers experienced significant premarket gains Wednesday morning following news that the United States and Iran reached a temporary ceasefire agreement, alleviating concerns about global oil supply constraints.The announcement came from President Donald Trump at 6:32 p.m. Eastern Time Tuesday evening. According to the terms, American forces would halt infrastructure strikes against Iran for a 14-day period, contingent upon Iran’s immediate and complete reopening of the Strait of Hormuz shipping channel.BREAKING: President Trump says the US will be "helping with the traffic buildup" in the Strait of Hormuz, Iran can "start reconstruction," and the US will be "loading up with supplies and just 'hanging around' in order to make sure everything goes well.""This could be the… pic.twitter.com/T50afdzwDk— The Kobeissi Letter (@KobeissiLetter) April 8, 2026In a Truth Social post, Trump referenced a 10-point framework presented by Iranian officials, characterizing it as a viable foundation for ongoing discussions. He indicated that the parties had reached consensus on nearly every disputed issue.Iranian Foreign Affairs Minister Seyed Abbas Araghchi verified via X platform that Tehran would halt “defensive operations” within the strait once offensive actions against Iranian territory ceased.This narrow waterway represents a critical global oil transit point. Approximately one-fifth of worldwide petroleum supplies travel through the strait, meaning any closure directly impacts airline operational expenses.Following the ceasefire news, Brent crude prices collapsed as much as 16%, stabilizing around $94.30 per barrel. This significant decline offered welcome relief to aviation companies struggling with heightened fuel expenditures since mid-February.Aviation Sector Confronted Mounting Fuel ExpensesAmerican aviation companies anticipated spending an additional $11 billion on jet fuel throughout 2025 resulting from oil price increases. United Airlines chief executive Scott Kirby had cautioned that escalating fuel expenses could deliver a “meaningful” blow to first-quarter financial performance.United Airlines Holdings, Inc., UALDelta Air Lines recently implemented its first checked baggage fee increase in over two years as a measure to counterbalance fuel cost pressures. United Airlines adopted comparable pricing adjustments during a similar timeframe.Market Performance Across Major CarriersAmerican Airlines shares advanced 6.2% during premarket sessions. United Airlines stock jumped 8.7%, while Southwest Airlines gained 8.1%, Delta Air Lines climbed 6.8%, and JetBlue Airways posted a 5.9% increase.The U.S. Global Jets ETF registered a 7.7% gain, demonstrating widespread optimism throughout the aviation sector.European airline operators experienced parallel momentum. Lufthansa, Wizz Air, Air France-KLM, and easyJet each recorded gains exceeding 10% during morning European trading sessions.Airline equities had experienced downward pressure throughout recent weeks as Middle Eastern geopolitical tensions drove petroleum prices upward and sparked investor concerns regarding industry-wide profitability.Delta Air Lines was also slated to release first-quarter earnings results later Wednesday, providing additional focal points for sector investors monitoring aviation industry performance.The post Airline Stocks Soar as U.S.-Iran Ceasefire Agreement Drives Oil Prices Down appeared first on Blockonomi.