Quote:
Originally Posted by ShyGuy
Amadeus.net click on 'flights' then 'availability'
Any cabin that shows '9' means 9 or more seats. 9 is the highest you should see.

Good suggestion on the Amadeus system!
I usually use Flightstats.com, you need to log in, but it's free to set up.
Nitpicking moment of the day: A number by a fare bucket does not technically signify the number of seats remaining. It signifies the number of that fare bucket remaining in inventory. The trick is to correspond that amount of availability to seats remaining.
So, time for practical application. We know that certain carriers (B6 for example) advertise that they do not intentionally oversell flights. Therefore, the number of seats remaining, in this case, should be equal to the number in the fullfare bucket, Y. Many pitfalls with this, and each carrier's buckets are a bit different. Typically your full Y will include some oversells, so for a quickanddirty method, subtract a few off the Y to be safe Again, plenty of pitfalls with this until you understand what you are looking at.
Source: Background in revenue management and I still proceed with caution.