The link is to a year-old article that helped me decide not to pay Alaska Airlines’ voluntary SAF carbon mitigation fees. I’m still not certain about the right choice, and would like to hear your thoughts on the matter.
The big picture includes acknowledgement that there’s no such thing as ethical consumption within capitalism, so in some ways this choice is entirely irrelevant. Also that flying is by far the most polluting form of transportation per passenger mile so we should each minimize doing it. Finally that flying has the most challenging logistics of shifting energy sources, fundamentally because batteries are heavy.
Alaska offers me a choice during the checkout procedure to contribute to SAF accounting for between 5% and 20% of the fuel that my flight will use, but it has nothing to do with the fuel actually consumed by my flight. They are already buying some amount of SAF and using it in their SFO hub only, so the program is hand waving about the fungibility of fuel consumption. Really they’re just offering me the opportunity to donate money towards their SAF usage, indirectly supporting the growth of the SAF industry.
It seems to me that the whole SAF industry is currently greenwashing bullshit, piggybacking on the big lie from the past few decades that adding ethanol to automotive gasoline is “sustainable” in some meaningful way. But that ignores the water usage depleting aquifers at an accelerating rate, necessary fertilizer use and soil depletion, using food-producing acreage for fuel instead, energy usage in planting/harvesting/refining/distilling, and so on.
Please validate my choice not to donate to the current state of SAF, or provide links to interesting reading that supports your claim otherwise.
I’ve noticed that anecdotally as well. There are a lot of good points already listed in other comments, and I have a couple merely additive points.
On an individual passenger basis, direct flying has always been operationally cheaper if both options exist, because it’s a more efficient use of resources. In practice, financial efficiency also requires keeping all flights as full as possible, so it was maybe helpful for an airline to incentive a customer to keep hub flights full by pricing connections lower than a direct. The direct flight is arguably more valuable to a customer because it’s a better experience, so it can cost more. All three flights are going to fly anyway, so making the sale is most important to the airline.
But equally or more important, the overall volume of air travel passengers has grown enormously over the past several decades. I’d bet that many direct routes didn’t used to have enough pairwise volume to run a regularly full profitable flight, let alone multiple competing direct options. Now I expect a ton more pairs of cities to make economic sense.
Looking at it another way, that increased travel volume over decades also came with larger airports to support more total trips, and each of those new flights need to go somewhere. Airlines can add more options throughout the day to cities already served, and they can add new cities. They naturally choose both, therefore more direct routes are created. As more direct routes have supporting volume, the inefficiencies of the hub and spoke model dominate the bottom line.