Originally Posted by
emcampbe
Since when? AFAIK, Transborder fares have always had the same rules as domestic fares via-a-vis layovers - with a max of 4 hours (or next available flight) for a layover, with anything more becoming a stopover.
Yes, the standard is 4 hours just like US domestic fares unless otherwise specified in fare rules. Currently, however, the legacy 3 are all doing their own thing on US-Canada fares with DL specifying 6 hours, UA going with 12 hours, and AA having the most generous limit at 18 hours. There are no rules that allow for "next available flight" to book on a single fare component currently in any cases I'm aware of. If connection exceeds stopover limit, the flights will book on separate fares even if it is the next available flight.
