You should look at it in what way benefits you. Generally short term is more beneficial for picking someone up from airport. It's by the hour, but if you stay the whole day or longer it's $22/day. Long term is $14/day. You might even benefit more by finding discounted rates for parking online. You can Google Lehigh Valley airport parking (or any airport) and options will come up. Hope this helps.
I have to disagree with Ray. You can stay in short term as long as you like, but you will be paying the higher rate per day. Long term qualifications start after 3 days at the reduced rate.
Short term means a few days long term means weeks or months
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