Originally Posted by
catmndu
I appreciate the answers so far. Much to my surprise my tus-sea-lax-tus trip ended up with fare class V for tus-sea, fare class L for sea-lax, and fare class S for lax-tus (AA flight but can't tell if I'm booked on the prime flight or the AS codeshare).. AA says that I will get loyalty points based on fare class and distance. This trip will not make or break my next elite status so I will just ride this one out. This was all booked on the alaska website. I did try to piece this together using expertflyer after I posted my original question. I discovered I could not find fare class S for lax-tus on either alaska or american via expertflyer.
Thanks again!
If you look at your confirmation email it should have flight numbers for all your segments. From there you should be able to see the marketing carrier (for the one that you said you weren't sure about)
You should also be able to see it on your itinerary on the AS website.
If you see both an AA flight number and an AS flight number then it's a codeshare.