American Airlines is going to suspend these routes at the end of the summer because of high jet fuel prices

If your late-summer travel plans involve flying American Airlines nonstop from Los Angeles to Cleveland, Pittsburgh, Columbus or Washington, D.C., you may want to double-check your itinerary.

The airline has announced it will temporarily suspend these six domestic routes between August and October due to soaring fuel costs linked to the ongoing conflict involving Iran, which has sent aviation fuel prices skyrocketing. Jet fuel is one of an airline's biggest expenses, often accounting for nearly a third of operating costs, and carriers across the industry have been scrambling to offset the increase.

The affected routes are:

• Los Angeles (LAX) to Cleveland (CLE)
• Los Angeles (LAX) to Columbus (CMH)
• Los Angeles (LAX) to Pittsburgh (PIT)
• Los Angeles (LAX) to Washington Dulles (IAD)
• Charlotte (CLT) to Ontario, California (ONT)
• Charlotte (CLT) to Sacramento (SMF)

The suspensions will roll out between August 5 and October 5, according to reports. American says the routes are not being permanently eliminated and are instead part of a seasonal adjustment as the airline reevaluates capacity and costs.

However, for travelers, even these "temporary" changes may still translate into longer journeys, extra layovers and fewer options. American says passengers booked on affected flights will be offered alternate travel arrangements or refunds under the airline's schedule-change policies. Travelers departing from Los Angeles will still be able to reach the affected destinations, but many itineraries will now require connections.

American isn’t alone either—airlines worldwide are continuing to wrestle with the fallout from elevated fuel prices. According to the International Air Transport Association, jet fuel averaged nearly $142 per barrel last week, which is well above the roughly $99 per barrel level seen before the conflict escalated earlier this year. American has reportedly warned its investors that its annual fuel bill could increase by billions of dollars if prices remain elevated.

For now, travelers should expect fewer nonstop options, higher fares and a little less flexibility as airlines navigate one of the most expensive fuel environments in recent years. The days of cheap, plentiful flights aren't disappearing entirely—but they may be taking a brief layover themself.