Yes, they apply to any gamemode that would give you experience. Flairs are limited to 2 emotes.
Is URF coming back 2021?
URF 2021 Start and End date
According to League of Legends' lead game designer of modes Reina Sweet, Pick URF is going to start from LoL patch 11.19, September 23, 2021. URF will be a part of the new Night & Dawn 2021 event. And it will end at the same time as the event end.
How long will URF stay 2020?
There have been no major systems changes to URF since the last run earlier this year, and only one roster change: new Fiddlesticks!” Pick URF returns to the live game on May 14 at 13:00 PT / 16:00 ET / 21:00 UK and ends on June 5 at 23:59 PT / June 6 at 02:59 ET / 07:59 UK.