is this bookable? (end on with AC)
 

Hi. Can a NW agent possibly book something like:
YMM AC X/YEG NW X/MSP NW X/AMS NW OSL
NW X/AMS NW X/SEA AC X/YVR AC X/YEG AC YMM
On their system?
If you could book all this in one ticket, would you book it in two instead in order to use about $250 credit from previous NW ticket?

Yes, as long as TATL (the longest part of the itinerary) is on NW or KL.

Depends how tight is the connection in in YEG and YVR. I did it a few times but I was connecting from from NW/KL TATL award to NW normal domestic.

I would call NW reservations and explain what you're trying to do. Since it'd be NW-ticket stock, they might let you apply the $250 to the whole thing. On an international trip, it would be best to keep everything in one PNR if possible. But, if they can't apply the coupon, then I would probably just buy the tickets separately on my own and save the phone booking fee. :)

They should be able to do the actual interline booking, though. I don't think there's any problem with the ticketing, computer systems, etc. It's just whether or not the price is right for you. :)

Doesn't work on Canadian tickets :mad:
I now buy nwa.com tickets with a US credit card.

Unless you have left out some important info, OP, this seems fairly simple.

YMM-YEG is a Westjet market, and they have much lower OW fares than AC does. Same for YVR-YMM.

Why not just buy a couple of OW tickets on Westjet, and then use your voucher for a NW ticket to/from OSL?

You just have to compare whether one ticket is better than, in this case, 3 of them. Add it up, look at the schedule options available, and choose what works best for YOU! As always, sometimes the lowest fare is not always the best choice!!! Like if it means spending 8 hours in some awful airport twiddling your thumbs.

One way on August 3rd on WS is 144.87 all in. On AC it is 144.87 on Tango with all options included.
About SEA-YMM or YVR-YMM, AC from SEA is cheaper (196.86 on Tango Plus) than WS from YVR (264.65) and I would also need to get to YVR, not only SEA.
I called them and unfortunately the credit can only be applied to NW/KL itineraries only. They also could not find the itinerary I wanted - only YMM-YYZ and then KLM after. But the price was about 800 more than what I find on ITA.
I guess the answer to this is to book it separate or with a travel agent.
Thanks to all of you for info.
Important info I left out is that I leave on a Friday which blows up fares from YMM on WestJet or something like that.