You can type an airplane symbol using a keyboard with a numeric keypad if your computer is set to support this input method. If you don't have a numeric keyboard or typing the symbol doesn't work on your computer, you can copy and paste the airplane symbol.
Step 1
Press "Num Lock" on your keyboard to enable the numeric keypad.
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Step 2
Press and hold "Alt" on your keyboard.
Step 3
Type "+2708" on the numeric keypad to input the airplane symbol.