New research from Resources for the Future shows individual choices do make a difference: when flyers can see a flight’s emissions, they book cleaner ones.
Do individual choices really make a difference?
For years, we were told the same discouraging thing: our individual choices do not make a difference when it comes to tackling climate change. Whether we fly or not, the plane will go anyway.
Here is the quietly thrilling news. That is not entirely true, and now there’s real evidence.
When flight-booking sites began showing the carbon emissions of each flight, people measurably started choosing the cleaner ones. Not in a survey, not in a focus group, but in real bookings, with real money. Researchers at Resources for the Future tracked passenger choices across millions of actual bookings: once people could see the difference in emissions, they took action.
The study focused on consumers’ flight choices using US domestic flight data from 2018 to 2022. They found that showing flights’ carbon emissions at booking nudged real travellers towards the cleaner ones. The effect is modest, an incremental shift, not a stampede, but it’s real, measured in money actually spent, and it grew stronger as more sites showed the labels.
Maybe you are already a climate-aware flyer. The information is available if you know where to look. Google Flights now shows you every flight’s emissions and has even started flagging its contrail warming potential, those high-altitude effects that together make up a large share of flying’s warming effect.
Switch your search to “sort by emissions” and, like magic, the cleaner options rise to the top, often for the same price or less. Lower emissions mean less fuel burned, sometimes far less.
The gap between the thirstiest option and the most fuel-efficient is bigger than most people imagine.
A first-class seat on an older jet against a packed seat on a new one is the difference between renting a Hummer and a Hybrid. The “fly better” button is right there. Most people just don’t know where to find it.
And some flight-booking platforms make it even easier. Newer sites like BookBetter lead with the better choice rather than the cheapest; the whole climate picture is built right into the search.
Here’s our Google Flights video tutorial to show you how easy it is to find the biggest carbon savings.
Vote with your flight, because it counts
This is bigger than your one journey, and it is the part we find genuinely exciting.
When you choose the lower-emission, low-contrail-warming flight, you are not just shrinking your own bumprint. You are rewarding the airlines doing the hard, unglamorous decarbonisation work: buying newer, more efficient aircraft, planning smarter routes, filling up the seats, stripping out unnecessary weight. That work costs money, and right now it rarely gets rewarded. Your choice can change that.
The researchers make exactly this point: a steady, consistent shift in demand can change which aircraft, routes, and practices are commercially worth it.
In plain terms, enough of us choosing the cleaner flight makes being a cleaner airline pay. And to be clear, this isn’t the problem quietly fixing itself; it’s us, starting to push. The shift so far is real, and it grows every time another of us joins in. The change that really lasts comes when our choices and good rules pull in the same direction: enough of us voting with our bookings makes the cleaner option pay, and it gives governments the confidence to bring in the rules that finish the job. Neither does it alone. Together they do.
Choosing the lowest climate-impact flight is a vote, and the votes are starting to be counted. It is the difference between boarding a flight like ‘walking cargo’ and being a climate-conscious citizen.
You are not flying solo
And here is the loveliest part: you are not doing any of this alone.
You care, so do most of the rest of us. In a global survey in 2025, 93% of us said we want to travel more responsibly. Ninety-three per cent! You are not the lonely minority, worried and alone; you are the overwhelming majority, each of us quietly assuming we are the exception. We are surrounded by allies who feel exactly as we do.
Putting the good news into action
If you can skip the flight or take the train, that always wins.
But when you do fly, use these tips from our Passenger Action Checklist:
- Sort by emissions: Reward the cleaner flight and the airline flying that route most efficiently.
- Look at the contrail-warming impact: Favour daytime flights and check the contrail rating where you can.
- Talk to your travel agent: If someone else books your travel, ask them to look at all this as well; we bet they are in the 93% too, and may not know these tricks.
- Use your Passenger Power: Oh yeah, and talk about it, loudly!
Sometimes, just one person changing in a group is all it takes to start a ripple, and ripples have a way of becoming waves.
Your questions:
Yes, more than we’ve been told. Research from Resources for the Future found that when booking sites show flight emissions, travellers measurably shift towards cleaner flights. The effect is modest but real, and it grows as more of us do it and as governments add rules alongside.
It does two things: it cuts the emissions of your own trip (two flights on the same route can differ widely), and it sends a demand signal that rewards airlines for flying cleaner, newer, fuller aircraft. Enough of those choices help make the cleaner option pay.
Yes. A study of real US bookings from 2018 to 2022 found that once platforms displayed emissions, travellers became measurably more willing to pay for lower-emission flights, a shift seen in money actually spent, not just surveys.
Far from it. In a 2025 global survey, 93% of travellers said they want to travel more sustainably. Most people quietly assume they’re the exception when, in fact, they’re the overwhelming majority.
