S.3400: A bill to amend title 38, United States Code, to improve the educational assistance available under post-9/11 veterans educational assistance, and for other purposes.

GI Bill Fairness Act - Revises the amount payable to veterans for pursuit of a program of education under the post-9/11 veterans' educational assistance program to make such amount the highest amount charged by an institution of higher education in the appropriate state for tuition and fees for in-state undergraduate students for full-time pursuit of such programs of education.

Provides a monthly housing stipend for an individual pursuing a program of education through distance learning equal to the basic allowance for housing for a member residing in military housing in that area.