You probably felt it before you understood it. Maybe you went to book a summer trip, saw the fare, and closed the tab to try again in the morning. Maybe your usual route just cost more than last year and nobody could tell you why. Here is the short version. A war thousands of miles away reached into your wallet, and it did it through the fuel tank of your airplane.
The trouble started on February 28, 2026, when a war broke out between the US and Israel on one side and Iran on the other. A few days later, on March 4, Iran closed the Strait of Hormuz. That narrow stretch of water is one of the most important oil routes on the planet, and shutting it disrupted roughly 20 percent of the world's oil supply, according to reporting collected on Wikipedia's page about the economic impact of the 2026 Iran war.
Oil markets did what they always do when supply gets scary. Brent crude, the global benchmark, jumped from about $72 a barrel on February 28 to a peak of $112.57 on March 27. That is a gain of roughly 55 percent in under a month.
Here is the part that surprises people. The war ended, and crude oil actually calmed down. By July 2026 Brent had fallen back under $75 a barrel, roughly where it sat before any of this started, Al Jazeera reported.
But jet fuel is not crude oil. It is a refined product, and refined products stayed stubbornly high even after the crude price relaxed. The Bipartisan Policy Center reported that jet fuel rose about 106 percent year over year, and North American jet fuel rose about 95 percent since the war began. The reason is uncomfortable. The Middle East supplied roughly 20 percent of the world's seaborne jet fuel before the conflict, so the thing that got choked off was exactly the thing planes burn.
Fuel is one of the biggest costs an airline has, so when it roughly doubles, the damage is enormous.
To put a number on it, Delta paid about $2.62 a gallon for fuel early in the year, then planned its spring quarter around a price closer to $4.30 a gallon. That is the kind of swing that turns a good year into a nervous one.
Airlines do not eat all of that. They pass a chunk of it to you, and they do it two ways.
First, higher fares. IAG, the group behind British Airways and Iberia, said it expects about 2 billion euros of extra fuel cost this year and plans to recover about 60 percent of it through higher ticket prices. Read that again. More than half of their fuel pain is meant to land on passengers.
Second, fewer seats. When airlines fly less to protect themselves, like United trimming its schedule, there are fewer seats chasing the same travelers, and prices drift up on their own. You feel both at once.
The airlines with the least cushion got hurt the worst, and some did not survive.
Spirit Airlines shut down completely on May 2, 2026, after 34 years. The company blamed a material jump in oil prices tied to the war with Iran, and the numbers show how brutal it was. Jet fuel went from about $2.50 a gallon in late February to $4.88 a gallon by early April, roughly a 95 percent spike, according to NPR. About 17,000 people lost their jobs.
Spirit was not alone. Ascend Airways, a UK carrier, closed and blamed the Middle East conflict and sustained higher jet fuel prices directly, FlightGlobal reported. When you run on thin margins and cheap fares, a fuel shock like this does not pinch. It ends you.
The reason your ticket got pricier in 2026 is not greed or bad luck at any single airline. It is a line you can trace: a war, a closed shipping lane, a jet fuel price that roughly doubled and stayed high even after crude calmed down, and some airlines planning to pass most of that added cost to passengers while the weakest players folded. Crude oil has come back to earth. Jet fuel, and the fares that ride on it, are taking their sweet time. When that finally works its way through, your next fare should breathe a little easier. Until then, book early, and try not to take it personally.
Reported from public sources. Figures were accurate around the time of writing and can change as airlines report new results.
New tools, fresh route data, and the odd travel tip. No spam, and you can unsubscribe anytime.