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Old Jun 11, 19, 3:22 pm
FlyerTalk Evangelist
Join Date: Nov 2014
Location: MSP
Programs: DL PM, UA Gold, WN, Global Entry; +others wherever miles/points are found
Posts: 11,338
Originally Posted by xliioper View Post
K/L/T basis = P (e.g. KAA2AQFN)
S/W/V basis = Z (e.g. WAA2KKFN)
Q/H/U basis = D (e.g. QAA2AFFN)
E/M/B/Y basis = C (e.g. EAA0AFFN)
Yes, the mapping is well-defined on domestic routes, and this is it. The relevant characters from the current domestic format are in first and seventh position, eg WAA2KKFN. W has a secondary inventory of W (and books into Z), and F indicates it is a First fare.

The last two characters together determine the class and type of fare:

BN, BS: Basic Economy (BS for specials)
DN, DS: Deep Discount Economy (DS for specials)
ER, EX: Deep Discount Economy, combines only with higher fares (cannot be combined with type DN, DS, ER, EX or Basic Economy, X for specials)
EN: Economy Restricted
EY: Economy Flexible
FN: First Restricted
FY: First Flexible

Last edited by findark; Jun 11, 19 at 3:34 pm
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