system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can airlines like RyanAir in Europe offer 15 pound international flights, when in the US it costs me $150 to fly to the next state over?

I see people flying all over Europe for 10 and 20 pound/euro flights, but for me to fly from Little Rock, AR to Kansas City costs $150 each way.  Why is it so much cheaper to fly around Europe?
gpt
Look up Spirit Airlines in the States. $7 flights one way. Plus airport fees it comes to about $30, but the airline fee is cheep.

Multitudinous restrictions apply. You'll be nickel-and-dimed for everything. Read the fine print.