The following lists some of the letters used to designate different types of fares. This is distinct from class of service. A number (e.g., 7 or 14) usually means how many days in advance the ticket must be bought.

Miscellaneous AP Advance Purchase EX Excursion Fare B Capacity-controlled Excursion Fares SW Offpeak; Saturday or Sunday W Weekend X Midweek US 48 contiguous states (not including alaska/hawaii)

Economy KH Weekend KL Midweek/Offpeak MH Weekend (Discount Fare) ML Midweek/Offpeak (Discount Fare) L Capacity-controlled Inventory

Standard SH Peak SL Offpeak V Offpeak

Coach B Capacity-controlled Inventory BN Night Coach H Capacity-controlled Inventory, Coach/Night Coach V Offpeak YH Weekend YL Midweek/Offpeak

Super Coach QH Weekend; applies Fri-Sun QL Midweek; applies Mon-Thur

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