The 787 and A380 are both immense planes compared to 90% of the domestic fleet. You can count the number of domestic routes that can support widebody aircraft (

The 787 and A380 are both immense planes compared to 90% of the domestic fleet. You can count the number of domestic routes that can support widebody aircraft (787/777/A33/A350/A380) on one hand. And they are significantly more fuel efficient per passenger mile than a 737/A320 which are in turn quite a bit more fuel efficient per passenger mile than a regional jet (United Express/American Eagle, etc.)