Coming anti-consumer “interline” baggage rules — worse than
baggage fees   US Airways and Delta Air Lines are moving to
eliminate transferring baggage from their flights to connection
flights of other airlines. This will present consumers with a
major hassle, especially for international flights.  Admittedly,
the travel industry has a lot of jargon, including the phrase
“interline baggage.” While travelers may not know the phrase, it
can make a big difference in a trip, especially one overseas.
In short, interlining baggage is when one carrier transfers
checked luggage to another for the traveler, thus meaning no
need to pick up bags at a connection point and rechecking that
luggage with the next carrier. This also may avoid the need to
exit and re-enter security.  Airlines like Southwest for years
have had a policy not to interline baggage. Consequently, most
of my clients haven’t connected from Southwest to another
carrier. (The major exceptions being international connections
in Los Angeles International