From some previous discussion:
Originally Posted by
mherdeg
You might try something I've done lately, which is
- represent the exact trip I want using the ITA route language, e.g. from xxx:: ua123 ua456 to: yyy:: ua789,
- look up that exact itinerary on hipmunk.com, which accepts ITA route language and books directly on united.com,
- assuming Hipmunk finds and prices the trip (legal but unusual connection, no phantom availability discrepancy between ITA/UA) click through from hipmunk to united.com's purchase page,
- put the reservation on hold with "ticket by phone",
- call United Web Support and ask to use an e-cert on a trip that's on hold.
My experience has been that if ITA says a UA fare is legit, and if the availability is still there, you can coax the united.com reservation engine to price the trip only by using intermediaries (kayak is very crude, hipmunk is a bit more refined).