$38 Find Cheap Frontier Flights from Chicago to Phoenix Sky Harbor Intl Airport

Generally, when trying to get a below average price for your ticket, try to book around 9 days before departure. For the cheapest possible price, our data suggests booking 63 days before departure.

Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $178 return. The next cheapest options are Spirit Airlines and American Airlines, with return flights costing on average $221 and $314 respectively.

In the last 3 days, the lowest price for a flight with Frontier from Chicago to Phoenix Sky Harbor Intl Airport was $128 for a return flight and $42 for a one-way flight.

Yes, Frontier does offer direct flights for the route, with around 5 flights per week.

On average, the cheapest day of the week to fly from Chicago to Phoenix Sky Harbor Intl Airport with Frontier is Monday, when prices are around $32. The most expensive day is generally Saturday, where the average price is around $63.

The cheapest month for Frontier flights to Phoenix Sky Harbor Intl Airport from Chicago is generally May, where plane tickets cost $71 on average. If possible, try to avoid the most expensive months of December and March, where tickets cost $149 and $168 respectively.