Scenarios: Cabin Class & Aircraft Load

Love the middle seat

The more people on any particular aircraft the more efficient that aircraft becomes per passenger. On a packed aircraft the significant emissions of simply getting the aircraft aloft gets split between many people and the per passenger emissions drop significantly. This is a rare instance where an airline's incentives align with the environment.

There are a number of ways more people can be put on an aircraft

  • Use economy seats rather than higher class seats because they take less room.
  • Use a budget airline which fits more seats into an aircraft than a legacy airline.
  • Choose a fully booked flight which by definition is carrying more people.

So while sitting in the middle economy seat on a budget airline might not be ideal for your personal comfort, it's good for the environment.

The Travelyst impact model used by Google Flights and mentioned on the Action page estimates emissions using the above factors. It estimates the contributions from seating layout and then additionally uses historical data on flight loading.

The scenario below presents a significant contrast between an individual flying first class SFO to BOS on a lightly booked aircraft and an individual flying the same route in economy on a fully packed budget airline.  The avoided emissions are very significant.

party=1&return=round&income=avg&orig2=SFO&dest2=BOS&mode2=aircraft_nominal&class2=first&occ2=light&orig1=SFO&dest1=BOS&mode1=aircraft_nominal&class1=budget&occ1=full
Used to help calculate impact, not used for comparison.

Travel Legs

Order
Itinerary
Use either 3 letter airport codes or search for a city.
Details about travel modes can be found in the More > Geek Out menu.
Higher cabin classes occupy more aircraft cabin space per passenger and lower the efficiency of the flight.
The more full loaded an aircraft, the more efficient the flight.
Test test
Itinerary
Use either 3 letter airport codes or search for a city.
Details about travel modes can be found in the More > Geek Out menu.
Higher cabin classes occupy more aircraft cabin space per passenger and lower the efficiency of the flight.
The more full loaded an aircraft, the more efficient the flight.
Test test
X
This trip has a light impact. This trip has a moderate impact. This trip has a heavy impact.
This is equivalent to:
X
This trip has a light impact. This trip has a moderate impact. This trip has a heavy impact.
This is equivalent to: