American Airlines Airbus A321neo N430AN on approach to Harry Reid International Airport, Las Vegas

American Warns Fuel Costs Will Force Flight Cuts

by Connor Kerr | Sep 18, 2026 | Mondo dell'aviazione, Notizia | 0 comments

Airlines are not short of passengers. They are short of cheap fuel, and the first thing that breaks is the flight that was only ever marginally worth operating.

At the Morgan Stanley Laguna Conference on 16 September, American Airlines chief executive Robert Isom told investors that if jet fuel stays where it is, the airline will have to change what it flies. United and Southwest said much the same thing on the same day.

Informazioni rapide

Data	16 September 2026, Morgan Stanley Laguna Conference
Airlines affected	American, United and Southwest
American’s fuel sensitivity	About USD 10 million per quarter for every 1 cent per gallon
Q4 impact	Roughly USD 1 billion above American’s July assumptions
United	Cancelling some December flights; further cuts possible into 2027
Southwest	2026 capacity growth already halved from an original 2–3 percent target
Underlying cause	Middle East conflict; oil pushed beyond USD 100 per barrel
Demand	Still strong. This is a cost problem, not a demand problem

The arithmetic is brutal and very simple

American discloses that a one-cent move in the price of a gallon of jet fuel is worth about ten million dollars a quarter to it. Fourth-quarter fuel has moved roughly a dollar a gallon against the assumptions the airline was using in July.

A dollar is a hundred cents. A hundred times ten million is a billion. That is the entire explanation for why a profitable airline with strong demand is suddenly talking about flying less.

“If fuel prices remain as high as they are right now, I think that’s going to require some adjustments in terms of our capacity planning as we take a look out into the future.”

Roberto Isom — Chief Executive Officer, American Airlines, 16 September 2026

Crucially, none of the three airlines is reporting weak bookings. American says demand is strong, unit revenue is up and premium cabins continue to perform. The cuts are surgical rather than defensive: thin-margin routes come out so that the profitable ones can keep running.

American Airlines Airbus A321neo on final approach to Boston — An American Airlines A321neo on approach to Boston. Narrowbodies on thin domestic routes are where fuel-driven capacity cuts land first. Photo: Wikimedia Commons

What each airline is actually doing

United is the most concrete: some December flights already in the schedule will not operate, with further reductions possible into the first quarter and across 2027 if fuel stays expensive. Southwest has halved its planned 2026 capacity growth from an original target of two to three percent, and has said it could trim further. American is scaling back planned growth over the holiday period and expects slower growth into 2027.

“We are not flying to maximize market share. We’re flying to maximize profitability and free cash generation.”

Michael Leskinen — Chief Financial Officer, United Airlines, 16 September 2026

That sentence is the whole strategy in one line, and it is a meaningful break from the decade in which American carriers chased share and defended every route. A capacity cut used to be read as weakness. It is now being presented to investors as discipline.

US television coverage of the expected cuts to cheaper flights.

Why the fuel price moved

This is a war story wearing an accounting costume. Fuel eased after the Iran ceasefire and the reopening of the Strait of Hormuz, then climbed again when the ceasefire collapsed, and climbed further after strikes on Saudi oil infrastructure pushed crude well past a hundred dollars a barrel.

For passengers the effect is indirect but real. The flights that disappear first are the off-peak, low-fare, thin-route departures, which are precisely the ones people book when they are price-sensitive. Fares hold up on the routes that survive. The cheap seat is not getting more expensive so much as quietly ceasing to exist.

Sources: Reuters, Bloomberg, CNN Business, Airways, AirlineGeeks, Skift, and remarks by American and United executives at the Morgan Stanley Laguna Conference.

Domande frequenti

Why are American, United and Southwest cutting flights in 2026?

Jet fuel prices have surged because of the conflict in the Middle East, pushing crude beyond USD 100 a barrel. The airlines say demand remains strong, but thin-margin routes no longer cover their fuel cost, so those flights are being removed first.

How much does a change in fuel price cost American Airlines?

American Airlines discloses that a one-cent change in the price per gallon of jet fuel moves its costs by roughly USD 10 million per quarter. The recent rise of about one dollar a gallon translates into roughly USD 1 billion of extra fourth-quarter fuel expense.

Is weak demand causing the airline capacity cuts?

No. American reported strong demand, rising unit revenue and continued strength in premium cabins. The cuts are driven entirely by fuel costs, which is why carriers are trimming marginal routes rather than reducing flying across the board.

Which flights are most likely to be cancelled?

Off-peak, low-fare and thin-route departures go first, including redeyes and midweek services. United has already removed some December flights. Higher-yield and premium-heavy routes are being protected because they still cover the higher fuel cost.

What has Southwest Airlines done about fuel costs?

Southwest has roughly halved its planned 2026 capacity growth, down from an original target of two to three percent, and has indicated it could reduce that further if fuel prices stay elevated.

Will airline ticket prices rise because of jet fuel costs?

Fares on surviving routes are holding up rather than spiking, because demand remains strong. The more noticeable effect for travellers is reduced choice: the cheapest off-peak departures are removed from schedules instead of being repriced.