Delta Air Lines: standard pitch is 31", Delta Comfort+ offers 34".
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Standard economy seat pitch on Delta Air Lines is 31 inches.
Comfort+ adds extra recline and priority boarding on top of the legroom — a reasonable upgrade for flights over 4 hours.
Yes — pitch can vary by aircraft type and specific route even within the same fare class, so always check a seat-map site for your exact flight number before booking.
Exit rows and bulkhead seats often have similar or better legroom than the paid premium option, sometimes for a lower seat-selection fee — check the seat map before paying for the named premium product.