Cheap flights from Phoenix to Illinois

The cheapest airlines for a one-way flight from Phoenix to Illinois are Frontier ($32), Allegiant Air ($63), and American Airlines ($100).

Most travelers choose Phoenix Sky Harbor Intl - Chicago O'Hare Intl, Phoenix Sky Harbor Intl - Chicago Midway or Phoenix Sky Harbor Intl - Lambert-St Louis when deciding on the best route from Phoenix to Illinois.

Before booking your flight to Illinois from Phoenix, check out the most reliable airlines to get you to your destination on time: Cathay Pacific (84%), Aer Lingus (83%), Japan Airlines( 82%).

While on average a flight from Phoenix to Illinois is generally $1,554, our data shows the cheapest flight currently is $133. When looking at the most popular route, (Phoenix Sky Harbor Intl - Chicago O'Hare Intl), you can expect to pay $199 for that flight.

Yes. In addition to deals on Phoenix to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phoenix to Illinois.

Yes. Cheapflights offers flight deals from Phoenix to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Currently, January is the cheapest month in which you can book a flight from Phoenix to Illinois (average of $213). Flying from Phoenix to Illinois in June is currently the most expensive (average of $364). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.