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$81+ Cheap flights from Tucson (TUS) to Illinois

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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — ORD
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Tucson to Illinois

Keep the following information in mind while searching for Tucson to Illinois flight deals. Data was last updated agosto 14, 2025.

Round-trip from

$168
(Travelocity)

One-way from

$81
(Priceline)

Popular in

February

Cheapest in

September

Average price

$401

Good round-trip deal

$336 or less

Good one-way deal

$213 or less
From Tucson to Illinois
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One-way flight from Tucson to Illinois
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Tucson to Illinois.
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Price to beat on a one-way flight from Tucson to Illinois.
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Find flight deals from Tucson to Illinois

Cheapest flights from Tucson to Illinois
Explore the most affordable flight options available from Tucson to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 14, 2025.

This Travelocity deal was found by Cheapflights users on 8/13. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/3011:47 amTUS - ORD
1 stop10h 06mFrontier
dom. 11/25:00 amORD - TUS
1 stop5h 47mFrontier
Deal found 8/13$168
This Gotogate deal was found by Cheapflights users on 8/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/511:35 amTUS - ORD
1 stop10h 24mFrontier
jue. 9/116:00 amORD - TUS
1 stop6h 45mFrontier
Deal found 8/14$175
This Priceline deal was found by Cheapflights users on 8/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/311:35 amTUS - ORD
1 stop10h 24mFrontier
dom. 10/55:35 amORD - TUS
1 stop7h 10mFrontier
Deal found 8/14$184
This Orbitz deal was found by Cheapflights users on 8/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1811:35 amTUS - ORD
1 stop10h 24mFrontier
lun. 9/226:00 amORD - TUS
2 stops9h 51mFrontier
Deal found 8/14$201
This Priceline deal was found by Cheapflights users on 8/12. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1111:35 amTUS - ORD
1 stop10h 24mFrontier
jue. 9/186:00 amORD - TUS
1 stop6h 45mFrontier
Deal found 8/12$217
This Expedia deal was found by Cheapflights users on 8/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/1911:35 amTUS - ORD
1 stop10h 24mFrontier
lun. 9/226:00 amORD - TUS
2 stops9h 51mFrontier
Deal found 8/14$234
This Southwest deal was found by Cheapflights users on 8/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/57:20 amTUS - MDW
Nonstop3h 15mSouthwest
jue. 9/118:30 amMDW - TUS
Nonstop3h 40mSouthwest
Deal found 8/14$247
This United Airlines deal was found by Cheapflights users on 8/11. 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.
vie. 9/1911:39 amTUS - ORD
Nonstop3h 31mUnited Airlines
mar. 9/238:49 amORD - TUS
Nonstop3h 54mUnited Airlines
Deal found 8/11$247
This American Airlines deal was found by Cheapflights users on 8/14. 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.
vie. 9/512:25 pmTUS - ORD
Nonstop3h 30mAmerican Airlines
jue. 9/119:45 amORD - TUS
Nonstop3h 50mAmerican Airlines
Deal found 8/14$249
This American Airlines deal was found by Cheapflights users on 8/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/36:01 amTUS - STL
1 stop7h 08mAmerican Airlines
sáb. 9/137:16 amSTL - TUS
1 stop7h 25mAmerican Airlines
Deal found 8/13$250
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/2712:29 pmTUS - ORD
1 stop6h 25mFrontier
sáb. 11/17:20 amORD - TUS
1 stop29h 27mFrontier
Deal found 8/13$250
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/1711:30 amTUS - STL
1 stop19h 41mFrontier
mié. 8/277:54 pmSTL - TUS
1 stop16h 43mFrontier
Deal found 8/13$254

Cheapflights Fare Finder

 
Customize your flight search to find flights from Tucson to Illinois 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 agosto 14, 2025.
Use the filters below to find and compare flights from Tucson to Illinois that are best for you.

Fly from

Tucson

Fly to

Illinois

Route

Depart

Return

Price

TucsonChicago

TUS - ORD

TUSORD

Tucson

jue. 10/30

11:47 am-11:53 pm

1 stop10h 06m

Chicago O'Hare Intl

dom. 11/2

5:00 am-9:47 am

1 stop5h 47m

$168

TucsonChicago

TUS - ORD

TUSORD

Tucson

vie. 9/5

11:35 am-11:59 pm

1 stop10h 24m

Chicago O'Hare Intl

jue. 9/11

6:00 am-10:45 am

1 stop6h 45m

$175

TucsonChicago

TUS - ORD

TUSORD

Tucson

vie. 10/3

11:35 am-11:59 pm

1 stop10h 24m

Chicago O'Hare Intl

dom. 10/5

5:35 am-10:45 am

1 stop7h 10m

$184

TucsonChicago

TUS - ORD

TUSORD

Tucson

jue. 9/18

11:35 am-11:59 pm

1 stop10h 24m

Chicago O'Hare Intl

lun. 9/22

6:00 am-1:51 pm

2 stops9h 51m

$201

TucsonChicago

TUS - ORD

TUSORD

Tucson

jue. 9/11

11:35 am-11:59 pm

1 stop10h 24m

Chicago O'Hare Intl

jue. 9/18

6:00 am-10:45 am

1 stop6h 45m

$217

TucsonChicago

TUS - ORD

TUSORD

Tucson

vie. 9/19

11:35 am-11:59 pm

1 stop10h 24m

Chicago O'Hare Intl

lun. 9/22

6:00 am-1:51 pm

2 stops9h 51m

$234

TucsonChicago

TUS - MDW

TUSMDW

Tucson

vie. 9/5

7:20 am-12:35 pm

Nonstop3h 15m

Chicago Midway

jue. 9/11

8:30 am-10:10 am

Nonstop3h 40m

$247

TucsonChicago

TUS - ORD

TUSORD

Tucson

vie. 9/19

12:25 pm-5:55 pm

Nonstop3h 30m

Chicago O'Hare Intl

mié. 10/1

9:45 am-11:35 am

Nonstop3h 50m

$247

TucsonChicago

TUS - ORD

TUSORD

Tucson

vie. 9/12

11:39 am-5:10 pm

Nonstop3h 31m

Chicago O'Hare Intl

dom. 9/14

8:49 am-10:43 am

Nonstop3h 54m

$247

TucsonChicago

TUS - ORD

TUSORD

Tucson

jue. 9/11

12:25 pm-5:55 pm

Nonstop3h 30m

Chicago O'Hare Intl

dom. 9/14

9:45 am-11:35 am

Nonstop3h 50m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 60 results
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Best time to book a flight from Tucson to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Tucson 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 Tucson to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Tucson to Illinois (average of $245). Flying from Tucson to Illinois in March is currently the most expensive (average of $321). 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 TUS to IL?

Find hourly flight availability from Tucson to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

When flying from Tucson to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Tucson to Illinois

Explore weekly flight availability from Tucson to Illinois. 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 agosto 14, 2025.

The most flights from TUS to USIL are scheduled on a Monday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated agosto 14, 2025.
Read through reviews of airlines operating flights from Tucson to Illinois, such as Southwest, United Airlines, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,916 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,217 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Tucson to Illinois. 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 from for flights from Tucson to Illinois?

    For a flight from Tucson to Illinois, you will be flying from Tucson. Tucson (TUS) is just 7.5 mi from the center of the city.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $81. Users have also found prices from $117 and $189 on American Airlines and Delta, respectively.

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

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

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

    Before booking your flight to Illinois from Tucson, check out the most reliable airlines to get you to your destination on time: Qatar Airways (80%), American Airlines (79%), SkyWest Airlines( 77%).

  • What are the cheapest flights from Tucson to Illinois?

    The cheapest flight price from Tucson to Illinois is $153. On average you can expect to pay $841. The most popular route, (Tucson - Chicago O'Hare Intl), can usually be booked for $247.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Tucson 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.

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

    Currently, August is the cheapest month in which you can book a flight from Tucson to Illinois (average of $245). Flying from Tucson to Illinois in March is currently the most expensive (average of $321). 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

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Alternative routes for Tucson to Illinois

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Top 4 airlines flying from Tucson to Illinois

Discover the top 4 airlines that operate flights from Tucson to Illinois. 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$110Average$235FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$223Average$479FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$246Average$457FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$302Average$469FlexibilityNo cancel feeOn-time63%

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