swaMark Today I try to change to an earlier flight and every option has a minimum cost of 20 cents including the four nonstops. 20 cents won't put me in poverty, but it makes me go to the desktop version to apply a travel credit just on principle to delay putting in new money. If I pay the 20 cents and change the flight again, it stops asking for new money if I change to another nonstop. This asking for <$1 for SDC happened earlier last year and then stopped. But now it's back.

Edit to add:

Before ($4.80):
U.S. Flight Segment Tax $4.80

After ($5.00):
U.S. Flight Segment Tax $5.00