Yes, you can wear leggings on United (but airline can police your clothing).

A decade of leggings controversy, explained - Vox

FRIDAY PONTE POCKET LEGGING

United Airlines: leggings ban 'not sexist' even though it affects women more, US news

15 Best Compression Socks for Men in 2023: Travel, Running, and Beyond

Outrage, Explanations After United Turns Away Girls From Flight For Wearing Leggings : The Two-Way : NPR

Outrage, Explanations After United Turns Away Girls From Flight For Wearing Leggings : The Two-Way : NPR

Here's why United Airlines banned girls with leggings from a flight – New York Daily News

Is it fair that airlines impose a dress code on free flights?

United Airlines says customers are 'welcome' to wear leggings — unlike teens who used special passes - Los Angeles Times

Outrage, Explanations After United Turns Away Girls From Flight For Wearing Leggings : The Two-Way : NPR

Can we wear knee caps under leggings? - Quora