The news in the past week or so about Alaska 1282 has caused quite a few travel impacts as all 737 Max 9 aircraft are still grounded. United is a major customer of the Max 9 with nearly 80 aircraft not flying. Last year I recall a fair percentage of my transcon flights were the Max 9 and I never had any problems in-flight or after.
My Alaska flight this weekend to Phx is impacted by the grounding - after a quick check I realized it is showing as a Max 9. While not cancelled yet, I expect it to occur at any time. Thankfully I had booked a backup staging option and should be able to get to Phoenix a bit later than I had first planned.
Make sure to check your itineraries in advance to make sure you can still get to your destination!