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$139+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — ORD
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$209
(American Airlines)

One-way from

$139
(Trip.com)

Popular in

February

Cheapest in

April

Average price

$444

Good round-trip deal

$400 or less

Good one-way deal

$208 or less
Provider with most accurate pricing for Tucson-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Tucson-Chicago (CHI) flights.
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From Tucson to Illinois
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One-way flight from Tucson to Illinois
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High demand for flights, 0% 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 March 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 March 26, 2025.

This American Airlines deal was found by Cheapflights users on 3/25. 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 8/301:59 pmTUS - MLI
1 stop5h 20mAmerican Airlines
Sun 8/316:19 amMLI - TUS
1 stop7h 14mAmerican Airlines
Deal found 3/25$209
This Frontier deal was found by Cheapflights users on 3/24. 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.
Wed 4/211:59 amTUS - MDW
1 stop10h 22mFrontier
Wed 4/96:45 amMDW - TUS
1 stop6h 08mFrontier
Deal found 3/24$298
This Frontier deal was found by Cheapflights users on 3/25. 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.
Thu 6/512:43 pmTUS - ORD
1 stop6h 18mFrontier
Sun 6/86:00 amORD - TUS
1 stop6h 42mFrontier
Deal found 3/25$298
This Delta deal was found by Cheapflights users on 3/25. 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.
Tue 4/156:00 amTUS - STL
1 stop8h 26mDelta
Sun 4/207:10 amSTL - TUS
1 stop6h 10mDelta
Deal found 3/25$317
This Expedia deal was found by Cheapflights users on 3/25. 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.
Fri 4/1811:43 amTUS - ORD
1 stop10h 54mMultiple Airlines
Tue 4/223:44 pmORD - TUS
1 stop9h 34mMultiple Airlines
Deal found 3/25$317
This American Airlines deal was found by Cheapflights users on 3/25. 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 4/155:30 amTUS - STL
2 stops7h 43mAmerican Airlines
Sun 4/207:04 amSTL - TUS
1 stop5h 17mAmerican Airlines
Deal found 3/25$322
This Southwest deal was found by Cheapflights users on 3/25. 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.
Tue 4/225:50 amTUS - STL
2 stops10h 00mSouthwest
Tue 4/2910:25 amSTL - TUS
2 stops8h 25mSouthwest
Deal found 3/25$327
This United Airlines deal was found by Cheapflights users on 3/25. 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.
Fri 4/2512:30 pmTUS - STL
1 stop7h 39mUnited Airlines
Sat 4/266:30 amSTL - TUS
1 stop6h 14mUnited Airlines
Deal found 3/25$337
This Booking.com deal was found by Cheapflights users on 3/25. 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.
Fri 3/2811:49 amTUS - STL
1 stop19h 27mFrontier
Sun 4/612:37 pmSTL - TUS
1 stop24h 16mFrontier
Deal found 3/25$338
This Delta deal was found by Cheapflights users on 3/25. 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.
Tue 5/2012:55 pmTUS - ORD
1 stop9h 04mDelta
Wed 5/217:05 amORD - TUS
1 stop6h 55mDelta
Deal found 3/25$366
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/185:44 pmTUS - ORD
2 stops21h 09mAlaska Airlines
Tue 4/225:56 pmORD - TUS
1 stop19h 03mAlaska Airlines
Deal found 3/25$370
This Southwest deal was found by Cheapflights users on 3/24. 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.
Mon 6/25:00 amTUS - MDW
Nonstop3h 10mSouthwest
Thu 6/59:05 pmMDW - TUS
Nonstop3h 35mSouthwest
Deal found 3/24$377

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 March 26, 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

TucsonMoline

TUS - MLI

TUSMLI

Tucson

Sat 8/30

1:59 pm-9:19 pm

1 stop5h 20m

Moline Quad-City

Sun 8/31

6:19 am-11:33 am

1 stop7h 14m

$209

TucsonChicago

TUS - MDW

TUSMDW

Tucson

Thu 6/5

11:27 am-8:53 pm

1 stop7h 26m

Chicago Midway

Sun 6/8

6:25 am-11:48 am

1 stop7h 23m

$298

TucsonChicago

TUS - ORD

TUSORD

Tucson

Thu 6/5

12:43 pm-9:01 pm

1 stop6h 18m

Chicago O'Hare Intl

Sun 6/8

6:00 am-10:42 am

1 stop6h 42m

$298

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 4/15

6:00 am-4:26 pm

1 stop8h 26m

Lambert-St Louis

Sun 4/20

7:10 am-11:20 am

1 stop6h 10m

$317

TucsonChicago

TUS - ORD

TUSORD

Tucson

Fri 4/18

11:43 am-12:37 am

1 stop10h 54m

Chicago O'Hare Intl

Tue 4/22

3:44 pm-11:18 pm

1 stop9h 34m

$317

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 4/15

5:30 am-3:13 pm

2 stops7h 43m

Lambert-St Louis

Sun 4/20

7:04 am-10:21 am

1 stop5h 17m

$322

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 4/22

5:50 am-5:50 pm

2 stops10h 00m

Lambert-St Louis

Tue 4/29

10:25 am-4:50 pm

2 stops8h 25m

$327

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 4/25

12:30 pm-10:09 pm

1 stop7h 39m

Lambert-St Louis

Sat 4/26

6:30 am-10:44 am

1 stop6h 14m

$337

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 3/28

11:49 am-9:16 am

1 stop19h 27m

Lambert-St Louis

Sun 4/6

12:37 pm-10:53 am

1 stop24h 16m

$338

TucsonChicago

TUS - ORD

TUSORD

Tucson

Tue 5/20

12:55 pm-11:59 pm

1 stop9h 04m

Chicago O'Hare Intl

Wed 5/21

7:05 am-12:00 pm

1 stop6h 55m

$366

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 41 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 $323). 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 March 26, 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 March 26, 2025.

The most flights from TUS to USIL are scheduled on a Tuesday (10 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 March 26, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from Tucson to Illinois by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,274 reviews

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,789 reviews
Southwest
8.1
Very good
4,274 reviews

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,891 reviews
Southwest
8.1
Very good
4,274 reviews

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,330 reviews
Southwest
8.1
Very good
4,274 reviews

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,608 reviews
Southwest
8.1
Very good
4,274 reviews

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $139. Users have also found prices from $159 and $168 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: Royal Jordanian (98%), Qatar Airways (97%), United Airlines( 97%).

  • What are the cheapest flights from Tucson to Illinois?

    The cheapest flight price from Tucson to Illinois is $121. On average you can expect to pay $1,827. The most popular route, (Tucson - Chicago O'Hare Intl), can usually be booked for $289.

  • 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 $323). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$149Average$481FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$237Average$479FlexibilityNo cancel feeOn-time71%
DeltaCheapest$321Average$673FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$379Average$471FlexibilityNo cancel feeOn-time63%
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