880lb sounds about 4 lost PAX that could have flown.
You also have to factor in the fuel saving from the engines not running for as long.
For example on a 747 Classic the standard start-up & taxy allowance is 1400 kg. If you could halve then then are pretty neutral with weight. For sure there's a few airports where you don't burn the full 1400 kg but also more than a few where you do. (LAX, Amsterdam, etc.)