Flight prices change daily & sometimes hourly. I've heard it said that prices are lowest on Tuesday afternoon. Just go online to kayak.com or cheapflights.com & a bunch of airfare search engines will pop up. Click on search flights & if there are flights from LGB to your destination airport in Ohio, then you'll see a bunch of prices listed. Southwest & JetBlue are not listed on these sites. For these carriers you'll need to use the airline website.
If you Google LGB to whatever city your destination is closest to, it will give you an idea.
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