Delta Fare Class B

What does main cabin (b) mean on Delta Airlines?

Fare class M is a main cabin full fare revenue class on Delta Airlines mainline and code share flights.

Fare class ranking

High

Higher Fare Classes

Y

Lower Fare Classes

E,N,R,V,X,T,U,L,K,Q,H,S,M

Upgrade probability

Silver Medallion 22.033%
Gold Medallion 47.457%
Platinum Medallion 72.881%
Diamond Medallion 98.305%

Upgrade probability is based on fare class ranking and medallion status.  These calculations are estimates only and should be used as a general idea of ranking for upgrades at the gate. All complimentary upgrades are based upon inventory availability.

These calculations are not endorsed or provided by Delta Airlines.

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