Thought maybe someone could give me a little advice regarding compensation for cancelled flights on United. My flight today has been cancelled out of ORD, along with apparently about 70% of all flights out of ORD. The agent blamed "air traffic". This seem to be affecting all the other carriers as well, as rebooking was not possible.

This one is new to me. I get weather, mechanical, etc all the time. Just wondering if this cancellation and rebooking (now arriving 24 hours later than previous scheduled departure) entitles me to anything.

Any advice? Thanks,
Charles