Airlines are absolutely still hedging fuel:

https://www.aerotime.aero/articles/airline-fuel-hedging-iran...

Southwest was famously killing it during the oil shocks of the 1990s and 2000s because they had the foresight to buy futures when spot prices were low. See https://southwest50.com/our-stories/the-southwest-jet-fuel-h... - I used to joke that Southwest was a futures trader disguised as an airline.

Unfortunately they ditched the strategy last year, claiming the costs were no longer worth the benefits: https://www.wsj.com/articles/why-southwest-airlines-finally-... and http://www.wsj.com/articles/airlines-pull-back-on-hedging-fu...

I bet they’re regretting that decision now.

SWA was the last major airline to engage in strategic hedging, and came under considerable investor pressure to stop doing that (since it means they can’t lower fares as much when oil is cheap). So they stopped, and investors apparently don’t want airlines to be futures traders disguised as airlines. They prefer credit card referral marketing agencies disguised as airlines.

Now the airlines simply raise fares in lockstep when oil gets expensive, or simply go out of business, like Spirit did last week.