So I was just looking at different flights from my home airport of PHL because why not and I looked up the flight from PHL-LAX, the flight is 6 hours and AA flies their A330 or A321. The flight was $259 round trip
Anyway, I also looked at the short flight from PHL-ABE. It is a quick 45 min flight in an AA Eagle ERJ. It is only 1 hour and 10 minutes to drive between the airports but the flight costs $363.