George Mason UniversityCostello College of Business

Fairfax, Virginia, USA

About the school

The Costello College of Business is the business school of George Mason University in Fairfax, Virginia, near Washington, D.C. It offers graduate business programs including a Flex MBA and an Online MBA aimed at working professionals.

Parent university: George Mason University
Public / private: Public Source: aacsb.edu · verified October 5, 2026
Main address: 4400 University Drive, Fairfax, Virginia 22030 Source: business.gmu.edu · verified October 5, 2026

MBA programs

George Mason University – Costello College of Business

Costello Flex MBA

Part-timeOnline

Fairfax, Virginia, USA · Arlington, Virginia, USA
As little as 16 months; up to six years (FAQ on same page says up to 4 years)
Tuition not published or not verified
No verified deadline

View program

George Mason University – Costello College of Business

Online MBA

Part-timeOnline

Fairfax, Virginia, USA
As little as 16 months or up to three years
USD 1,105.50 per credit · All applicants
No verified deadline

View program

Campuses

Fairfax — Fairfax, Virginia, USA4400 University Drive, Fairfax, Virginia 22030 Source: business.gmu.edu · verified October 5, 2026
Arlington — Arlington, Virginia, USA Source: business.gmu.edu · verified October 5, 2026

Accreditation

AACSB International — Business schoolAccreditation of the business school. It does not by itself confirm that every campus or program is covered.Source: aacsb.edu · verified October 5, 2026