Just announced: United is having a week-long cyber-Monday sale:
Bring your holiday(dream) to life
Say fare-well to winter blues and book your next trip to Europe with
United! Stroll along the Seine, sip tea in London, or indulge in Dutch
delights with low fares to Paris, London, Amsterdam, and other
European destinations. Book now until December 3 for travel between
January 10 and March 8 to enjoy this exclusive Cyber Week deal.
https://www.united.com/en-us/cyber-week-2023
Personally, my 2024 travel dance card is already pretty full, and I won't be jetting to Europe for a winter getaway. I can't say if there are any great bargains here (those are usually in the eye of the beholder) but if you are interested in some winter travel, might be worth a look.