Grammar fix
What are you up to this weekend?
ask weekend plans
A friendly, casual way to ask what someone is planning to do at the weekend.
expressionB1core
Hear it in context
Notice where the phrase sounds natural.
- So, what are you up to this weekend — anything fun?chatting with a colleague
- A: What are you up to this weekend?
B: Not much — maybe a walk if it's sunny.small talk
Fix the pattern
Pattern: What are you up to [this weekend / later / tonight]?
WrongWhat are you up to for this weekend plan?
RightWhat are you up to this weekend?
'Be up to' already means 'doing', so don't add 'plan'; just say 'this weekend'.
PatternWhat are you up to [this weekend / later / tonight]?
Don't confuse it
'What are you up to?' is casual and open; 'What are your plans?' sounds a bit more formal.