Google flights tells you how much your flight contributes.

Does anyone use this as criterion for picking your flight as opposed to price, non-stop flight or not, legroom, etc.?

Puts in perspective how much more efficient trains are though...

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I think it's a good metric to have, although I would not be inclined to forgo a connecting flight because of this information. My problem is the non-competitive nature of the information: if you elect to not take the flight, someone else probably will. It's a demand-induced industry. If we all become more aware of the flight costs, the airlines, in theory at least, would offer fewer flights.

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Hurts like a bastid...

An airline carbon tax that subsidizes AmTrak would be a good idea. It would either improve rail, or foster electric airplane development. Long haul electric planes are a LONG way from reality, but they're practical for short regional flights now. Flights like Pittsburgh to Philly, Spokane to Seattle.

Real Engineering did a good episode on this topic:
[www.youtube.com]

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MacResource User Map: [www.zeemaps.com]#

I haven't flown commercially (or privately) since the very early days of Covid BUT, when I DO fly commercially, I need to get from point "A" to point "B" as expeditiously as possible. "Carbon footprint" has NEVER been a consideration.

And the carbon footprint calculator is based upon the expected aircraft to be used. This isn't always the case and could result in a different footprint.