Originally Posted by
zorn
For example, I have a YOW-BER flight booked for the fall. The fare basis is BFFE for both the outbound and the return (of course they could be different.)
Then I head over to
https://matrix.itasoftware.com/ and do a search for YOW to BER on the dates in question. In this case Sep 20 to Sep 26.
You might want to uncheck the box "
Only show flights and prices with available seats" just in case you bought the last ticket with that fare basis. Click the "Show Advanced Controls" button. In the "Extension Codes" field put this (in both the outbound and the return for this example)
ac.YOW+BER.BFFE
Click on the flights you booked. (Not sure if this is necessary - maybe just click any flights.) This could take some hunting to find your actual flights.
Scroll down and find the link to the rules and there are the true, complete, official rules.
Well, sure. If the same fares are still available that will work. Trying to book same itinerary on aircanada.com will then also work. But what if the same fare is no longer available?