Yeah, it does. Good catch!

Have updated the initial post with K class.

A handy AC fare grid for NA flights that includes booking classes (in PDF format) is now available at:
http://aircanada.com/en/agents_na/ti...re_options.pdf

One other thing I found out yesterday - the tango plus ticket, if booked over the phone, has to be bought right away - the reservation can not be kept on hold for 24 hours.

Booking Class vs. Fare Basis
 

I have an international ticket from a consolidator. The booking class is "H" and the fare basis is a 5 character code starting with "V". For upgrades, is this ticket considered "H" or "V", i.e., can a SWU be used or must an SSWU be used?

Upgrades are based on your booking class; the fare basis is irrelevant. It's common that on consolidator tickets, the first letter of the fare basis doesn't match the booking class. So in your case, you will be able to use SWU since it's H cls.

Partly because ITN erroneously lists all booking codes/fare codes until the day of departure, I presumed that there was no restriction in terms of the date one must purchase a particular fare, in relationship to the departure date. I did not realize that after a certain date, the fare becomes null and void. This is further elaborated in the thread as listed in this link:

http://www.flyertalk.com/forum/showt...70#post4836970

I wonder if I may ask Andrew to list the Tango and Tango Plus booking codes, and the minimal time from the departure date that they must be bought.

You know what... that's a really good idea! :) Definitely a good to know (and add to my encyclopedia of rules.) :D

There is absolutely nothing "erroneous" with AC listing all booking classes applicable to the particular route, and not your personal situation.

Have you read the fare rules for that fare?

It does not -- it's just that you cannot book that fare due to the fact that all conditions have not been met.

Andrew has already listed all booking codes at the top of this thread :). Also, "booking codes" cannot be "bought" -- you can only purchase fares. As for fares, they depend on the route (for example, at the moment, there are over 65 Tango/Tango+ fares for YTO-YVR, about 34 fares in total for YUL-YTO (of which 27 are T/T+ fares), etc.)

If the booking class (let us say L) is listed on ITN/KVS tool for a flight segment upto the date of departure, but that fare (L) can only be bought no less than 7 days before the date of departure, what the does the listing of the L booking class from -6 days to 0 days before departure imply?

Where can one read the full fare rules for a fare? Obviously, the ac.com web site is not one of those places - until it is upgraded. Travelocity (at the following link: http://res.travelocity.ca/lognlogin....obrand_ctry=CA) does offer one place where the rules of the fares can be reviewed. What other web sites can the fares be reviewed?

You cannot "[buy an] L fare". You may be able to purchase the L14TPC fare or the L14ZITPC fare, but only if you meet all the conditions attached to it.

Well, first of all, since you don't have a fare that you can purchase, the availability in the L booking class is irrelevant for your purposes. However, someone might have purchased a ticket a month ago and may now want to change the date. There could also be a fare published between another city pair (e.g. you are looking at XXX-YYY, and the fare is published for ZZZ-YYY with a connection in XXX) that has no advance booking restrictions, etc.

Pardon my use of terminology - but I will continue to refer to a L fare generically for all individual L fares, two examples which you mention above.

For your 2 examples that you describe, the scenarios may be possible if there are L fares (booking class) with less than a 7 day advance restriction. Are there any such domestic, transborder, or international L fares (booking classes) with a zero day advance booking requirement (or at least, less than 7 day advance booking requirement)?

The listing of L class implies availability for fares that are not limited to your specific routing/city pair (say, YVR-YYC), but for through-routings that include your city-pair (say, LAX-YVR-YYC or NRT-YVR-YYC, or whatever); perhaps there are consolidators who use L. Ticketed passengers may also need L class to effect paid-for changes, etc., etc.

That is my question. Are there any L class fares (on any domestic, transborder, or international routing) which either allow new bookings or changes without a fare upgrade penalty, less than 7 days from departure? I am not aware of any such fares.

PS-Websaver fares can be bought within 7 days of departure? What booking codes are associated with these fares?

But it does not matter whether there are such fares. Booking classes in any availability display for most airlines are shown on a per-route basis.

To take this further, L booking class may show in the availability displays, even if there are no L-class fares filed for that route.