Flights do fly at night. The premise of the question is incorrect. Many flights, both domestic and international, operate throughout the night. However, there are reasons why some flights might not operate during certain nighttime hours, and why some people might not fly at night.
Reasons for Limited Night Flights:
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Noise Restrictions: Many airports have nighttime curfews or restrictions to mitigate noise pollution for nearby residents. These regulations aim to limit ground-perceived exposure to aircraft noise during night hours when people are sleeping. [Night flying restrictions or night-time curfews, including night flight bans, are any regulations or legislation imposed by a governing body to limit the ground-perceived exposure to aircraft noise pollution during the night hours, when the majority of residents are trying to sleep.]
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Public Transportation Limitations: In some areas, the lack of readily available public transportation to and from airports during late-night hours might affect flight scheduling. Domestic flight do not fly between 11 PM-5AM because of the non availability of public transport for people to be transported from/to airports…
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Operational Costs: Airlines may find it more cost-effective to schedule more flights during peak daytime hours, potentially resulting in fewer nighttime options.
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Pilot Regulations & Training: While pilots are trained for night flying, certain flights might require additional qualifications or experience leading to less nighttime flights for specific routes or aircraft types.
Why Some People Don't Fly at Night:
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Personal Preference: Some individuals simply prefer not to fly at night due to personal comfort or anxiety.
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Visual Impairment: For some individuals with specific visual impairments, nighttime flying might not be suitable or safe. Colorblind pilot here. It's totally absolutely 100% worth it and you won't even find not being able to fly at night a bother at all.
Conclusion:
While there are some limitations on nighttime flights due to regulations and operational factors, many aircraft fly throughout the night. The statement that “flights do not fly at night” is inaccurate.