Fly, fists, fly??
Here's video of Eagles fans throwing violent haymakers at each other while breaking every COVID-19 protocol in the book during Philly's loss to Baltimore on Sunday.
Unclear what prompted the massive brawl in the stands at Lincoln Financial Field in Philly ... but the fight was INSANE.
A man in a Carson Wentz jersey climbed down about 10 rows of seats to get to another man ... and he let the punches go as soon as he got in striking range.
The two traded blows for a few seconds .