Yes, planes are allowed to fly during a lunar eclipse. Lunar eclipses occur when the Earth passes between the Sun and the Moon, causing the Moon to temporarily move into the Earth's shadow. Unlike a solar eclipse, which can be visible from specific regions on Earth, a lunar eclipse can be observed from anywhere on the night side of the planet where the Moon is above the horizon.
During a lunar eclipse, the Moon's position in the sky changes, but it does not affect air travel or the operation of airplanes. The Moon's movement into the Earth's shadow does not pose any direct safety concerns for aircraft or affect their ability to fly.
Airplanes typically operate based on their flight plans, air traffic control instructions, and weather conditions, rather than the occurrence of celestial events like lunar eclipses. However, it's worth noting that some airlines or enthusiasts may arrange special flights to provide passengers with an opportunity to witness a lunar eclipse from a unique vantage point.