why reroute when 20 flight time change?
 

I'm flying from IAD to LAX (and then transpacific) on December 3 and always check for flight changes and the resultant loss of upgrade seats.

This time flight 947 schedule was changed to depart app. 30 minutes later so instead of just putting me on that flight the "computer" put me on a flight via MSY that left closer to departure time but didn't get in until one hour later.

Needless to say they also changed my upgrade seats.

I was told the computer is doing this all the time now and the phone agents have notified the computer people.

As always beware and check schedule changes.

There have been TONS of posts on this issue. UAs rebooking engine is terrible. Glad you constantly checked and hope you get what you want!

I may be wrong, but I suspect the computer looks for flights with availability in the same fare basis class. Its not very clever about it however.

not paranoid to ck & reck
 

Man, can I relate to this. I usually ck every week for sched changes to itins, but somehow it got to be 2 weeks & LO -- I'd been rerouted from a 3-stop outbound w/ 40-60 min between segments to another w/ 12 min between flt 1 & 2 at PDX (w/ flt 1 having a 30% on time rating). Called instantly & 1st comment was that since I hadn't called within a week 'I had accepted change'. I don't think so & when I pointed out it was not a 'legal' connection, the CSR backed down. Having done my homework, I had acceptable flts lined up; long story short: she accepted my 1st choice, which actually made it a 2-stop flt that was $75 cheaper AND credited it to my UA visa (no voucher).