Originally Posted by
dvs7310
I haven't figured out for sure if changing carriers on the same route triggers a change fee or not . . . .
The rules are pretty clear on this, it doesn't.
Rule 16(a).1.b, Rebooking/Rerouting Prior to Departure:
Changes to ticketed points are permitted at a charge of USD 125 per transaction. If the fare level has increased since ticket issuance, the difference between the old and new fare will also be charged. If the fare level has decreased since ticket issuance, no refund will apply.
Rule 16(a).2.b, Rebooking/Rerouting After Departure:
Changes to ticketed points are permitted at a charge of USD 125 per transaction.
The $125 fee is only imposed for changes to ticketed points. No difference between stops and connections. Notwithstanding the reluctance of some carriers to follow the rules, these are quotes from the published rules. If the people who issued your ticket won't follow them, it's time to find someplace else to buy these tickets.