Well.. There's not a real easy answer to this question. Starting a career in aviation is no small undertaking. Large aviation universities like Embry-Riddle really are a good as they say, but the focus is more on getting a degree along side your flying. Most airlines require a 4 year degree, but they don't care in what field, they just want to know that you have a good foundation and the commitment to complete your higher education. That said, if you already have a degree, then you might want to shop around for a place that can focus more on flying and less on the classroom. If you don't have a degree, then you could consider a large Aviation University, but its not cheap, and it might be until retirement to reap the dividends. Also know, that smaller flight schools run professional pilot programs and can give a more focused study path.
Fair warning, just to get a private,instrument,commercial,multi-engine,ATP certificates will take at least a year if you're highly motivated, but probably longer. Add school, if needed, and you're at 3-4 years before you can even enter the workforce. Then, after recent legislation, the time required to be a co-pilot with an airline has soared, forcing pilot's to find hours elsewhere. Generally as a flight instructor which could take another year or three to accumulate enough time to get hired by an airline. Finally after you get planted in the right seat of that airliner, it takes another 3 or 4 years of low seniority grunt work to break 30k in pay. Mandatory retirement is now 65. So now after 9-12 years, your finally an airline pilot, but not much time till retirement. If you want to fly, and have a desire for aviation, then you should have no problem, you just won't get rich.