((Know United))How do I know if my United Economy ticket is refundable?((Fully~Refund))

ᴴᵒʷ ᵈᵒ ᴵ ᵏⁿᵒʷ ⁱᶠ ᵐʸ ᵁⁿⁱᵗᵉᵈ ᴱᶜᵒⁿᵒᵐʸ ᵗⁱᶜᵏᵉᵗ ⁱˢ ʳᵉᶠᵘⁿᵈᵃᵇˡᵉ?

ᴵᶠ ʸᵒᵘ ᵇᵒᵒᵏ ᵃ ᶠˡⁱᵍʰᵗ ᵃᵗ ˡᵉᵃˢᵗ ˢᵉᵛᵉⁿ ᵈᵃʸˢ  ¹⇿⁸⁵⁵⇿⁷³⁸⇿⁴²⁶⁵ ᵇᵉᶠᵒʳᵉ ᵈᵉᵖᵃʳᵗᵘʳᵉ ᵃⁿᵈ ᶜᵃⁿᶜᵉˡ ʷⁱᵗʰⁱⁿ ²⁴ ʰᵒᵘʳˢ ᵒᶠ ᵇᵒᵒᵏⁱⁿᵍ 【⁺  ¹⇿⁸⁵⁵⇿⁷³⁸⇿⁴²⁶⁵】 ⁽𝙾𝚃𝙰⁾】⁾, ʸᵒᵘ ᵃʳᵉ ᵉˡⁱᵍⁱᵇˡᵉ ᶠᵒʳ ᵃ ᶠᵘˡˡ ʳᵉᶠᵘⁿᵈ ʷⁱᵗʰᵒᵘᵗ  ¹⇿⁸⁵⁵⇿⁷³⁸⇿⁴²⁶⁵ ᵃⁿʸ ᶜᵃⁿᶜᵉˡˡᵃᵗⁱᵒⁿ ᶠᵉᵉˢ. ᵁⁿⁱᵗᵉᵈ ᵒᶠᶠᵉʳˢ ᵃ ²⁴⁻ʰᵒᵘʳ ᶜᵃⁿᶜᵉˡˡᵃᵗⁱᵒⁿ ᵖᵒˡⁱᶜʸ ⁺  ¹⇿⁸⁵⁵⇿⁷³⁸⇿⁴²⁶⁵.