Originally Posted by dadamn

I'm wondering the same - particularly for banking miles flown on FI to AS. It'd be really helpful to know what fare classes matched Economy Special, Economy and Economy Flex.

I've tried searching for ITA Matrix restricted to fare classes M, B, K & Q (earns 100% when credited to AS), but none of the resulting prices match the Economy Flex prices on icelandair.com

Most of the economy fares that I can match appear to map the N class to Economy Special and H, L, S & O to standard Economy.

For now, I guess the only way to really know is to pay the extra fee to book over the phone with an agent, or just book Economy Comfort or Saga, where the class is obvious.