Question on flight # sequencing

Does any know what the A means behind the flight #?

flightaware.com/live/flight/UAL814A

emathieu meet Damiross, Damiross, this is emathieu. I’ll just step out for a bit.

discussions.flightaware.com/view … ame+number may help.

Allen

Just means there’s another flight with the same number someplace in the wide vicinity.

Using the search feature (at the top of every discussion page), I found the following, among others:
discussions.flightaware.com/view … ght=letter
discussions.flightaware.com/view … ght=letter

It is used to avoid confusion with a flight with the same flight number.
It looks to me that there has been a change in the United time table. Fl#814 had been flying from Los Angles ( KLAX) to Denver ( KDEN ) and on to Washington D.C. ( KIAD ) but now flies from Denver to Des Moines ( KDSM ).

The ’ A ’ would have been added to avoid confusion with the Washington D.C. leg of the flight that 814 no longer serves.

flightaware.com/live/flight/UAL8 … /KDEN/KIAD

united.com/page/article/0,67 … timetables