Originally Posted by
matchbox20_is
Thinking about flying LAX-DTW-YYZ with an extended (more than 4 hour) layover in DTW. Prefer this routing as LAX-DTW is on a 359 with RUC availability, and shockingly, it's cheaper. If I book this as a multi-city itinerary with a broken fare, would the RUC apply to both segments or just the first?
By the book, one RUC per fare component, so if it is actually a broken fare, you would only be able to upgrade one segment. In practice, I've had it work both ways -- two different itineraries both with availability on both legs, one agent cleared me on both flights, the other only on the long segment (I didn't say anything to influence it on either occasion).
I am hedging and saying "if it is actually a broken fare" because depending on just how long of a layover you are contemplating, I /think/ that (1) even booking multi-city, it will map it onto a single fare if there is one available that covers it and (2) there might be longer layovers allowed to Canada (but maybe that was a height-of-COVID thing and is no longer the case)