Cheap flights from Illinois to Tucson from $163

In general, January is the cheapest month to fly from Illinois to Tucson. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $404. If you don’t want to visit Tucson in January, then you should wait until April to fly from Illinois, when ticket prices are also cheap, with an average price of $429.

According to our data, Tuesday is the cheapest day to fly to Tucson from Illinois. The lowest ticket price found for a Tuesday departure recently was $426. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Tucson for around $537.

In the afternoon is the cheapest time of day to fly from Illinois to Tucson when you can find flight prices for as low as $411. Flying to Tucson in the afternoon is an ideal time because this is during off-peak travel hours. Flights at noon are often more expensive with an average ticket price of $476.

Fly from Chicago O'Hare Intl to Tucson for the best Illinois - Tucson flight prices

You are more likely to see cheaper flights to Tucson from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Tucson for around $469 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Tucson from Illinois for as low as $371 on momondo.

There are 4 cabin classes available to choose from on Illinois to Tucson flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest, American Airlines, and Delta are the most popular carriers operating from Illinois to Tucson

Allegiant Air, American Airlines and United Airlines are the top three most popular airlines that fly to Tucson from Illinois according to our data. Allegiant Air is the first choice among our users, with 71% of people opting to fly with this airline when traveling to Tucson. Keep in mind that there are 6 different airlines that fly to Tucson on a routine basis, so you have a few additional options to choose from.

8 flights are operational daily from Illinois to Tucson as of August 2026. The most popular departure time for this route is 9:00PM, with 77% of flights per day taking off in the evening.

56 flights are operational weekly from Illinois to Tucson as of August 2026. The most popular departure day for this route is Wed, with 16% of flights per week taking off on this day.