Why does it take longer to fly from east to west on an airplane?

Dozens of Airlines Still Fly Over Russia, Some on Routes to the US

How to Fly Comfortably in Economy on Long-Distance International Flights - WanderWisdom

Why Does It Take Longer To Fly West?

Why Does It Take Longer To Fly West?

Why the King Air continues to be a popular choice - Skies Mag

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Why does it take longer to fly East to West than West to East? Which factors affect this? Does Earth's spinning affect the time difference? - Quora

Flight times from the USA to New Zealand

The Secret of the Jet Stream: Why Flying West to East is Shorter Than East to West