Latest news, Mar 9, 2026: I'm working on fixing the way that some forecasts have recently shown incorrect flight routes, including wrong departure and arrival airports. If your forecast describes an obviously bogus flight, please use the Report an issue button to let me know about it!
UAL2139, SFO to RLB: no forecast yet
It's too early to give you a forecast. I don't yet know the flight plan for this leg of UAL2139, so I can't give you an accurate forecast right now. Come check again closer to departure time. (Note that sometimes I don't know the flight plan until minutes before boarding!)
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For best results, try it shortly before departure.
(Or, see a random upcoming flight's forecast.)