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$83+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TUS
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap 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 December 23, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/22. 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.
Wed 12/319:34 pmORD - TUS
1 stop19h 07mFrontier
Sun 1/47:43 pmTUS - ORD
2 stops27h 29mFrontier
Deal found 12/22$385
This Kiwi.com deal was found by Cheapflights users on 12/22. 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.
Wed 12/319:34 pmORD - TUS
1 stop19h 07mMultiple Airlines
Sun 1/47:43 pmTUS - ORD
2 stops33h 22mMultiple Airlines
Deal found 12/22$391
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/288:00 amMDW - TUS
1 stop10h 53mFrontier
Sun 1/47:43 pmTUS - MDW
2 stops40h 10mFrontier
Deal found 12/21$413
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/2610:15 amORD - TUS
1 stop9h 25mSun Country Air
Mon 12/297:37 pmTUS - ORD
1 stop21h 07mSun Country Air
Deal found 12/21$422
This Kiwi.com deal was found by Cheapflights users on 12/21. 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.
Sat 12/278:26 pmORD - TUS
1 stop23h 14mMultiple Airlines
Tue 12/307:20 pmTUS - ORD
2 stops22h 13mMultiple Airlines
Deal found 12/21$448
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/289:05 amORD - TUS
1 stop9h 48mMultiple Airlines
Sun 1/47:43 pmTUS - ORD
2 stops33h 22mMultiple Airlines
Deal found 12/21$494
This American Airlines deal was found by Cheapflights users on 12/20. 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.
Tue 12/302:32 pmBMI - TUS
2 stops9h 30mAmerican Airlines
Fri 1/28:00 amTUS - BMI
1 stop5h 59mAmerican Airlines
Deal found 12/20$541
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:00 amSTL - TUS
1 stop9h 04mDelta
Wed 1/141:42 pmTUS - STL
1 stop8h 57mDelta
Deal found 12/21$542
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:00 amSTL - TUS
1 stop9h 04mDelta
Tue 1/132:55 pmTUS - STL
2 stops22h 53mDelta
Deal found 12/21$546
This American Airlines deal was found by Cheapflights users on 12/22. 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.
Fri 12/264:20 pmPIA - TUS
1 stop7h 23mAmerican Airlines
Tue 1/69:00 amTUS - PIA
1 stop5h 24mAmerican Airlines
Deal found 12/22$556
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Tue 12/236:23 amCMI - TUS
1 stop6h 13mAmerican Airlines
Fri 1/28:00 amTUS - CMI
1 stop5h 27mAmerican Airlines
Deal found 12/21$562
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:35 amPIA - TUS
1 stop6h 03mUnited Airlines
Tue 1/62:32 pmTUS - PIA
1 stop5h 15mUnited Airlines
Deal found 12/21$564

Find flight deals from Illinois to Tucson

Keep the following information in mind while searching for Illinois to Tucson flight deals. Data was last updated December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$240
(Kiwi.com)

One-way from

$83
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$574

Good round-trip deal

$382 or less

Good one-way deal

$198 or less
Provider with most accurate pricing for Chicago (CHI)-Tucson flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Tucson flights.
Search Deals
From Illinois to Tucson
Search Deals
One-way flight from Illinois to Tucson
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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

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 December 23, 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

Sat 1/17

7:43 am-2:10 pm

1 stop7h 27m

Tucson

Tue 1/20

5:38 pm-11:59 pm

1 stop5h 21m

$243

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/10

7:43 pm-10:36 am

2 stops39h 53m

Tucson

Thu 1/22

9:49 pm-8:48 pm

1 stop21h 59m

$259

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/17

3:55 pm-8:45 pm

1 stop5h 50m

Tucson

Sat 1/24

6:40 am-12:55 pm

1 stop5h 15m

$265

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/17

4:15 pm-9:15 pm

1 stop6h 00m

Tucson

Sat 1/24

9:50 am-7:27 pm

2 stops8h 37m

$270

MolineTucson

MLI - TUS

MLITUS

Moline Quad-City

Tue 2/17

3:34 pm-11:04 pm

1 stop8h 30m

Tucson

Wed 3/4

5:04 pm-11:06 pm

1 stop5h 02m

$271

MolineTucson

MLI - TUS

MLITUS

Moline Quad-City

Tue 2/17

11:05 am-6:40 pm

1 stop8h 35m

Tucson

Tue 3/3

4:46 pm-11:06 pm

1 stop5h 20m

$271

MolineTucson

MLI - TUS

MLITUS

Moline Quad-City

Tue 2/17

10:46 am-9:49 pm

2 stops12h 03m

Tucson

Wed 3/4

2:42 pm-8:54 pm

1 stop5h 12m

$276

MolineTucson

MLI - TUS

MLITUS

Moline Quad-City

Thu 2/26

11:05 am-6:40 pm

1 stop8h 35m

Tucson

Tue 3/3

4:46 pm-11:06 pm

1 stop5h 20m

$280

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 2/17

6:47 am-2:12 pm

1 stop8h 25m

Tucson

Sat 2/21

5:56 pm-11:50 pm

1 stop4h 54m

$287

PeoriaTucson

PIA - TUS

PIATUS

Greater Peoria

Fri 2/20

11:12 am-6:40 pm

1 stop8h 28m

Tucson

Tue 2/24

4:46 pm-11:05 pm

1 stop5h 19m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 60 results
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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, April is the cheapest month in which you can book a flight from Illinois to Tucson (average of $59). Flying from Illinois to Tucson in March is currently the most expensive (average of $157). 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 December 23, 2025.

When flying from Illinois to Tucson, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 21% versus a flight at noon.

What is the cheapest day to fly from Illinois to Tucson?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Tucson. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Tucson flight should consider departing on Friday afternoons when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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?

    American Airlines, Frontier, and Southwest can get you from Illinois to Tucson in just under 5h 50m. Your travel time can differ by up to 34h 03m. 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 $75. Users have also found prices from $123 and $134 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 Qatar Airways (100%), Aer Lingus (100%) or British Airways (100%) 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 $81. While the most popular route (Chicago O'Hare Intl - Tucson) can be booked for $232 on average, our data indicates $382 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, April is the cheapest month in which you can book a flight from Illinois to Tucson (average of $59). Flying from Illinois to Tucson in March is currently the most expensive (average of $157). 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

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Top 4 airlines flying from Illinois to Tucson

Discover the top 4 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$109Average$193FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$208Average$466FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$268Average$446FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$291Average$469FlexibilityNo cancel feeOn-time63%

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