HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Tucson

$71+ Cheap flights from Illinois to Tucson (TUS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TUS
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Tucson with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Tucson

Keep the following information in mind while searching for Illinois to Tucson flight deals. Data was last updated September 16, 2025.

Round-trip from

$254
(Frontier)

One-way from

$71
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$408

Good round-trip deal

$388 or less

Good one-way deal

$123 or less
From Illinois to Tucson
Search Deals
One-way flight from Illinois to Tucson
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Tucson.
Search Deals
Price to beat on a one-way flight from Illinois to Tucson.
Search Deals

Find flight deals from Illinois to Tucson

Cheapest flights from Illinois to Tucson
Explore the most affordable flight options available from Illinois to Tucson. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amORD - TUS
1 stop6h 45mFrontier
Sun 10/511:35 amTUS - ORD
1 stop10h 24mFrontier
Deal found 9/16$254
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:15 amORD - TUS
1 stop9h 36mMultiple Airlines
Fri 10/311:35 amTUS - ORD
2 stops28h 39mMultiple Airlines
Deal found 9/14$262
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:50 amORD - TUS
1 stop6h 07mFrontier
Mon 10/2712:24 pmTUS - ORD
2 stops33h 48mFrontier
Deal found 9/14$263
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:00 amORD - TUS
1 stop6h 45mFrontier
Mon 9/292:41 pmTUS - ORD
2 stops17h 59mFrontier
Deal found 9/14$266
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amORD - TUS
1 stop6h 45mFrontier
Mon 10/62:41 pmTUS - ORD
2 stops31h 12mFrontier
Deal found 9/14$269
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:18 amMLI - TUS
1 stop7h 34mAmerican Airlines
Fri 12/52:35 pmTUS - MLI
1 stop7h 24mAmerican Airlines
Deal found 9/16$269
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amORD - TUS
1 stop6h 45mMultiple Airlines
Mon 10/62:41 pmTUS - ORD
1 stop28h 07mMultiple Airlines
Deal found 9/14$273
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:35 amORD - TUS
1 stop9h 16mMultiple Airlines
Fri 10/1012:24 pmTUS - ORD
1 stop9h 53mMultiple Airlines
Deal found 9/15$275
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:00 amORD - TUS
1 stop6h 47mFrontier
Fri 11/72:20 pmTUS - ORD
2 stops31h 40mFrontier
Deal found 9/13$282
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/302:42 pmSTL - TUS
1 stop23h 53mFrontier
Thu 11/69:21 amTUS - STL
1 stop7h 06mFrontier
Deal found 9/16$285
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/11:22 pmORD - TUS
1 stop10h 58mAmerican Airlines
Wed 11/510:29 amTUS - ORD
1 stop9h 52mAmerican Airlines
Deal found 9/14$285
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:35 amORD - TUS
1 stop8h 00mMultiple Airlines
Mon 11/32:20 pmTUS - ORD
1 stop14h 25mMultiple Airlines
Deal found 9/14$286

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Tucson that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Illinois to Tucson that are best for you.

Fly from

Illinois

Fly to

Tucson

Route

Depart

Return

Price

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 10/30

2:42 pm-12:35 pm

1 stop23h 53m

Tucson

Thu 11/6

9:21 am-5:27 pm

1 stop7h 06m

$285

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 11/8

5:30 pm-10:25 pm

1 stop5h 55m

Tucson

Tue 11/11

3:03 pm-11:23 pm

1 stop7h 20m

$287

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 11/8

7:00 am-1:51 pm

1 stop7h 51m

Tucson

Tue 11/11

5:55 pm-11:51 pm

1 stop4h 56m

$287

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 11/22

7:30 pm-1:10 am

1 stop6h 40m

Tucson

Tue 11/25

6:35 am-2:45 pm

1 stop7h 10m

$287

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 10/14

1:40 pm-5:08 pm

1 stop5h 28m

Tucson

Tue 10/28

7:30 am-3:47 pm

1 stop6h 17m

$287

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 11/18

9:04 am-2:08 pm

1 stop6h 04m

Tucson

Tue 12/2

5:45 pm-12:49 am

1 stop6h 04m

$287

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 10/15

5:55 am-9:20 am

1 stop5h 25m

Tucson

Wed 10/22

1:50 pm-11:10 pm

1 stop7h 20m

$287

MolineTucson

MLI - TUS

MLITUS

Moline Quad-City

Fri 9/26

4:59 pm-9:36 pm

1 stop6h 37m

Tucson

Tue 9/30

12:57 pm-10:42 pm

1 stop7h 45m

$349

ChicagoTucson

ORD - TUS

ORDTUS

Chicago O'Hare Intl

Sat 11/15

3:25 pm-11:54 pm

1 stop9h 29m

Tucson

Wed 11/19

6:00 am-4:30 pm

1 stop9h 30m

$358

ChicagoTucson

ORD - TUS

ORDTUS

Chicago O'Hare Intl

Wed 11/5

10:00 am-11:54 pm

1 stop14h 54m

Tucson

Wed 11/12

6:00 am-4:30 pm

1 stop9h 30m

$359

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Illinois to Tucson

Have a flexible travel schedule? Discover the best time to fly to Tucson from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Tucson

What is the cheapest month to book a flight from Illinois to Tucson?

Currently, August is the cheapest month in which you can book a flight from Illinois to Tucson (average of $361). Flying from Illinois to Tucson in March is currently the most expensive (average of $424). 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.

What is the cheapest time of day to fly from IL to TUS?

Find hourly flight availability from Illinois to Tucson. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Tucson as you normally would.

Weekly flight availability from Illinois to Tucson

Explore weekly flight availability from Illinois to Tucson. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 16, 2025.

The most flights from USIL to TUS are scheduled on a Monday (3 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Tucson. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Tucson from Illinois?

    Located just 7.5 mi from the city center, Tucson (TUS) is the airport most travelers will use when flying to Tucson from Illinois.

  • How long is the flight from Illinois to Tucson?

    Frontier, Delta, and American Airlines can get you from Illinois to Tucson in just under 5h 55m. Your travel time can differ by up to 17h 58m. There are 1241 mi between Illinois and Tucson. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Tucson one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $156. Users have also found prices from $169 and $174 on Southwest and American Airlines, respectively.

  • What are the most popular routes from Illinois to Tucson?

    While some choose either Chicago Midway - Tucson or Lambert-St Louis - Tucson, Chicago O'Hare Intl - Tucson is the most popular route from Illinois to Tucson.

  • What are the most reliable airlines from Illinois to Tucson?

    No one likes to see their flight delayed. When booking a flight from Illinois to Tucson consider choosing SkyWest Airlines (89%), United Airlines (80%) or American Airlines (48%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to Tucson?

    Looking at all options, your cheapest flight can be booked for $123. While the most popular route (Chicago O'Hare Intl - Tucson) can be booked for $273 on average, our data indicates $314 when flying from Illinois to Tucson.

  • Can I find deals for flights from Illinois to Tucson that include hotel bookings?

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

  • How can I find direct flights from Illinois to Tucson?

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

  • Can I find deals for business class flights from Illinois to Tucson?

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

  • What is the cheapest month to book a flight from Illinois to Tucson?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Tucson (average of $361). Flying from Illinois to Tucson in March is currently the most expensive (average of $424). 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.

See more FAQs

Traveling to a place near Tucson?

Book flights to Tucson if you plan to visit one of these locations
Sierra Vista
Green Valley

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Tucson

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Las Vegas flights
Dallas/Fort Worth to Las Vegas flights
Seattle to Las Vegas flights
Newark to Las Vegas flights
O'Hare Intl to Las Vegas flights
San Francisco to Las Vegas flights
O'Hare Intl to Sky Harbor Intl flights
Seattle to Sky Harbor Intl flights
Los Angeles to Las Vegas flights
John F Kennedy Intl to Sky Harbor Intl flights
Hobby to Las Vegas flights
Atlanta to Las Vegas flights
Newark to Sky Harbor Intl flights
Minneapolis to Sky Harbor Intl flights
Denver to Las Vegas flights
Dulles Intl to Las Vegas flights
LaGuardia to Las Vegas flights
Santa Ana to Las Vegas flights
Boston to Las Vegas flights
George Bush Intcntl to Las Vegas flights
Burbank to Las Vegas flights
Minneapolis to Las Vegas flights
Oakland to Las Vegas flights
Dallas/Fort Worth to Sky Harbor Intl flights
Reagan-National to Las Vegas flights
Philadelphia to Las Vegas flights
Orlando to Las Vegas flights
Baltimore to Las Vegas flights
Denver to Sky Harbor Intl flights
Boston to Sky Harbor Intl flights
Austin to Las Vegas flights
Atlanta to Sky Harbor Intl flights
Love Field to Las Vegas flights
Midway to Las Vegas flights
Portland to Las Vegas flights
Everett to Las Vegas flights
Portland to Sky Harbor Intl flights
San Jose to Las Vegas flights
Los Angeles to Sky Harbor Intl flights
Dulles Intl to Sky Harbor Intl flights
San Francisco to Sky Harbor Intl flights
Cleveland to Las Vegas flights
Detroit to Las Vegas flights
Midway to Sky Harbor Intl flights
LaGuardia to Sky Harbor Intl flights
Detroit to Sky Harbor Intl flights
Ontario to Las Vegas flights
Baltimore to Sky Harbor Intl flights
Fort Lauderdale to Las Vegas flights
Raleigh to Las Vegas flights

Top 5 airlines flying from Illinois to Tucson

Discover the top 5 airlines that operate flights from Illinois to Tucson. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$109Average$192FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$208Average$466FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$463FlexibilityNo cancel feeOn-time69%
DeltaCheapest$288Average$313FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$317Average$465FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.