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ANSWER: The travel time for a round trip will be greater.

EXPLANATION: It might seem that the travel time should be the same as the wind increases the total speed of the airplane from point A to point B and decreases the total speed of the airplane from point B to point A by the same amount. This is true, but the airplane benefits from the speed boost from the wind from point A to point B for a shorter amount of time and is hindered by the wind (blowing in the opposite direction) from point B to point A for a longer amount of time. If you're not convinced, imagine a wind speed that is equivalent to the engine speed of the airplane. The airplane would travel at double it's speed from point A to point B but would not move at all from point B to point A.

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