I doubt it is the airports fault. Often all the gates allocated to an airline are full because one or two flights were delayed and it just gets worse as the day goes by...
Weather including windshear, late connecting flights from other places. As far as Frontier Airlines goes i would check online for their on time record and if it's as bad as you say fly another airline.
Because you actually time travel when you come into Denver. Dont worry you will be on normal time when you get back to your reality.
Southwest flight attendant told us Denver is always late. Who knows. You'd think with all the horrible things going on they'd try harder?
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