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Often1, thanks for that, I had been basing my knowledge off the following table:
(taken from page 5 of here:
https://loyaltylobby.com/wp-content/...e-guide_en.pdf) Is this table now out of date?
Lack of flexibility is not that important to me, I am used to buying the cheapest economy tickets and therefore used to having pretty much zero flexibility. But I am trying to avoid these fares anyway, hence looking for a way to exclude them from ITA Matrix!