Yes, planes can fly in sub-zero temperatures, and in fact, they are designed to do so.
Airliners are built to withstand extremely cold temperatures. According to available information, temperatures at cruising altitude can reach -57°C. Pilots even prefer flying in extremely cold weather because of the denser air. Denser air improves engine performance and lift.
Why Cold Weather is Not Always a Problem for Airplanes
While extreme cold can present challenges, modern aircraft are engineered to handle it effectively:
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Aircraft Design: Airplanes are built to operate in a wide range of temperatures, including well below freezing.
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De-icing: Before takeoff, planes are often de-iced to remove snow and ice that can affect lift and control.
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Engine Performance: Cold air is denser, which can improve engine performance.
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Avionics and Systems: Aircraft avionics and critical systems are designed to function reliably in cold conditions.
Therefore, while winter weather can sometimes cause delays due to de-icing or ground conditions, the planes themselves are capable of flying in sub-zero temperatures.
