Cheap flights from Phoenix Sky Harbor Intl Airport to Chicago from $127

The month of January is, on average, the cheapest month to fly to Chicago from Phoenix Sky Harbor Intl Airport, with most prices found around $215. If you’re not able to fly to Chicago in January, then February is your next best option. Flight prices from Phoenix Sky Harbor Intl Airport to Chicago during February average around $217.

The cheapest day to depart on your flight to Chicago is on a Thursday when prices can be found for as low as $381. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Phoenix Sky Harbor Intl Airport to Chicago for around $551.

Our most recent data shows that the best time of day to fly to Chicago is in the afternoon. Flights from Phoenix Sky Harbor Intl Airport to Chicago during this time can be as low as $364. In contrast, the most expensive time of day to depart to Chicago is at noon when prices are around $450.

Fly from Phoenix Sky Harbor Intl to Chicago O'Hare Intl for the best Phoenix Sky Harbor Intl - Chicago flight prices

You are more likely to see cheaper flights to Chicago from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $300 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Phoenix Sky Harbor Intl Airport for as low as $268 on momondo.

There are 4 cabin classes available to choose from on Phoenix Sky Harbor Intl Airport to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 21% on your flight if you consider stops on a Phoenix Sky Harbor Intl Airport to Chicago flight.

As of September 2026, prices for Phoenix Sky Harbor Intl Airport to Chicago flights are approximately 95% more expensive when compared to flights at the same time last year.

Frontier, Allegiant Air, and United Airlines are the most popular carriers operating from Phoenix Sky Harbor Intl to Chicago

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Chicago from Phoenix Sky Harbor Intl Airport according to our data. American Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 6 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% of flights between Phoenix and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 153 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

Chicago (ORD) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via San Diego (SAN) offer the lowest average round-trip price of $238.

Flights connecting via Chicago (ORD) have the shortest average one-way travel time: 6h 41m.

San Diego (SAN) has the shortest average layover time for this route: 1h 15m.

The number of flights available between Phoenix Sky Harbor Intl Airport and Chicago is 52 per day as of September 2026. The most frequent departure time is 8:00AM, with 53% of daily flights leaving at noon.

The number of flights available between Phoenix Sky Harbor Intl Airport and Chicago is 364 per week as of September 2026. The most frequent departure day is Tue, with 18% of weekly flights leaving on this day.