Originally Posted by
findark
UA and AA still interline, but you also require the fares to allow combination and it seems like an increasing number of domestic fares on both sides (and perhaps all fares for AA) require combination with only own carrier fares (UA is UA/AC).
And the fact that this does not seem to affect UA/DL combinations would seem to indicate this is largely an AA issue, not a UA issue. Here's what I see in the AA fare rules for end-on-end ticketing which appear to be limiting combinations to AA partners only --
"PROVIDED -
COMBINATIONS ARE FOR CARRIER AA/AS/BB/HA/KS/MQ/WP/WS/
ZK/3M/7H/9K IN ANY RULE IN TARIFF
CPR - BETWEEN THE UNITED STATES-CANADA
DFR - WITHIN THE UNITED STATES
FBRNAPV - WITHIN NORTH AMERICA EXCEPT MEXICO
VPCR - BETWEEN PUERTO RICO/VIRGIN ISLANDS-CANADA
VPDR - BETWEEN PUERTO RICO/VIRGIN ISLANDS-THE USA.
COMBINATIONS ARE FOR CARRIER AA IN ANY RULE IN TARIFF
AACBR - BETWEEN THE UNITED STATES-CANADA
AA85R - WITHIN THE UNITED STATES."