Originally Posted by
jmertic
I've just done this without problem - even on the mobile app!
CLE-DTW-SEA-YVR-(WS)-SFO/SJC-SLC-CLE
I did notice the WS options we at the bottom of the list for YVR-SFO, but did price out.
YVR is an airport DL codeshares on WS flight to/from. They have actual thru fares that work on these flights. OP cases is about Whitehorse. WS only serves YXY via YYC on less than daily service.