$47 Find Cheap Frontier Flights from Chicago to Denver

When to Book Flights with Frontier from Chicago to Denver

• How far in advance should I book tickets for a flight with Frontier from Chicago to Denver?

  Generally, when trying to get a below average price for your ticket, try to book around 12 days before departure. For the cheapest possible price, our data suggests booking 81 days before departure.

• Is Frontier the cheapest airline to fly with from Chicago to Denver?

  Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $135 return. The next cheapest options are American Airlines and Southwest, with return flights costing on average $243 and $265 respectively.

• What is the cheapest Frontier flight from Chicago to Denver?

  In the last 3 days, the lowest price for a flight with Frontier from Chicago to Denver was $124 for a return flight and $75 for a one-way flight.

• Does Frontier fly direct to Denver from Chicago?

  No, Frontier does not fly the route directly.

• What’s the cheapest day of the week to fly from Chicago to Denver with Frontier?

  On average, the cheapest day of the week to fly from Chicago to Denver with Frontier is Tuesday, when prices are around $19. The most expensive day is generally Thursday, where the average price is around $40.

• What’s the cheapest month to fly from Chicago to Denver with Frontier?

  The cheapest month for Frontier flights to Denver from Chicago is generally September, where plane tickets cost $59 on average. If possible, try to avoid the most expensive months of April and December, where tickets cost $106 and $169 respectively.