North American Airlines, displays some of the US flag on its tail as a logo. Although not the whole flag is shown, it can be presumed it is represent USA.
Although not an Airline, the presidents AIR FORCE 1, displays a small but full USA flag on the Tail of the plane.
Ryanair
A Navy Flight Surgeon uses this very insignia. Airline, I do not know.
American airlines
American Airlines uses TS due to the engine size.
What restaurant has a green , white , red flag as a logo
American Airlines or American Eagle Outfitters
if you mean camouflage clothing, its german second hand army clothing.
Barclays uses a blue eagle as their logo.
EVA - a Taiwanese airline uses the Airline IATA Code of BR.
Qantas Airways uses the airline code QF.
The flag is raised quickly and lowered slowly. Do not let the flag touch the ground. The American flag should be folded in a triangle with the stars visible between uses.
FTD Goodyear (just the winged sandal)