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$65+ 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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — ORD
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$185
(Kiwi.com)

One-way from

$65
(Trip.com)

Popular in

November

Cheapest in

August

Average price

$556

Good round-trip deal

$358 or less

Good one-way deal

$248 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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Highest demand for flights based on searches. 6% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 13, 2025.

This Priceline deal was found by Cheapflights users on 11/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2212:50 pmTUS - ORD
1 stop10h 22mFrontier
Sun 12/289:05 amORD - TUS
1 stop9h 48mFrontier
Deal found 11/13$198
This Frontier deal was found by Cheapflights users on 11/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:30 pmTUS - ORD
1 stop10h 42mFrontier
Mon 12/1512:59 pmORD - TUS
1 stop6h 42mFrontier
Deal found 11/12$210
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:21 pmTUS - STL
2 stops13h 53mFrontier
Sun 12/79:14 pmSTL - TUS
1 stop22h 27mFrontier
Deal found 11/11$234
This Expedia deal was found by Cheapflights users on 11/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/148:01 pmTUS - ORD
1 stop12h 55mMultiple Airlines
Thu 12/1811:45 amORD - TUS
1 stop7h 43mMultiple Airlines
Deal found 11/13$241
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:08 pmTUS - ORD
2 stops16h 34mFrontier
Sun 12/1412:59 pmORD - TUS
1 stop30h 42mFrontier
Deal found 11/12$249
This Expedia deal was found by Cheapflights users on 11/10. 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.
Wed 12/36:00 amTUS - ORD
1 stop16h 59mMultiple Airlines
Sun 12/77:00 amORD - TUS
1 stop5h 45mMultiple Airlines
Deal found 11/10$257
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:00 amTUS - ORD
1 stop9h 55mMultiple Airlines
Sun 1/49:05 amORD - TUS
1 stop9h 48mMultiple Airlines
Deal found 11/12$258
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:29 pmTUS - ORD
1 stop11h 27mMultiple Airlines
Mon 12/157:00 amORD - TUS
2 stops12h 41mMultiple Airlines
Deal found 11/12$259
This Expedia deal was found by Cheapflights users on 11/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:00 amTUS - ORD
1 stop16h 59mMultiple Airlines
Mon 1/57:00 amORD - TUS
1 stop5h 55mMultiple Airlines
Deal found 11/11$260
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:00 amTUS - ORD
1 stop15h 30mMultiple Airlines
Sun 12/149:47 amORD - TUS
1 stop10h 19mMultiple Airlines
Deal found 11/12$263
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:42 amTUS - ORD
1 stop16h 20mMultiple Airlines
Sun 1/49:05 amORD - TUS
1 stop9h 48mMultiple Airlines
Deal found 11/12$269
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:30 pmTUS - STL
1 stop20h 44mMultiple Airlines
Mon 12/87:00 amSTL - TUS
1 stop9h 45mMultiple Airlines
Deal found 11/12$277

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 November 13, 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

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 1/29

9:49 pm-8:53 pm

1 stop22h 04m

Lambert-St Louis

Tue 2/3

2:50 pm-11:59 pm

1 stop10h 09m

$251

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 1/21

8:15 am-4:55 pm

1 stop7h 40m

Lambert-St Louis

Wed 1/28

2:45 pm-9:26 pm

1 stop7h 41m

$267

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 1/21

1:15 pm-10:20 pm

2 stops8h 05m

Lambert-St Louis

Wed 1/28

2:20 pm-10:25 pm

2 stops9h 05m

$277

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 12/5

12:30 pm-10:14 am

1 stop20h 44m

Lambert-St Louis

Mon 12/8

7:00 am-3:45 pm

1 stop9h 45m

$277

TucsonChicago

TUS - ORD

TUSORD

Tucson

Wed 1/21

2:55 pm-11:53 pm

1 stop7h 58m

Chicago O'Hare Intl

Tue 1/27

2:20 pm-2:04 pm

1 stop24h 44m

$285

TucsonChicago

TUS - ORD

TUSORD

Tucson

Mon 1/19

2:55 pm-11:53 pm

1 stop7h 58m

Chicago O'Hare Intl

Wed 1/28

7:30 am-2:04 pm

1 stop31h 34m

$285

TucsonChicago

TUS - ORD

TUSORD

Tucson

Tue 1/20

2:55 pm-11:53 pm

1 stop7h 58m

Chicago O'Hare Intl

Wed 1/28

7:30 am-2:04 pm

1 stop31h 34m

$285

TucsonChicago

TUS - ORD

TUSORD

Tucson

Sun 1/18

2:50 pm-11:53 pm

1 stop8h 03m

Chicago O'Hare Intl

Tue 1/27

2:20 pm-2:04 pm

1 stop24h 44m

$285

TucsonChicago

TUS - ORD

TUSORD

Tucson

Wed 1/21

2:55 pm-11:53 pm

1 stop7h 58m

Chicago O'Hare Intl

Wed 1/28

2:20 pm-2:04 pm

1 stop24h 44m

$285

TucsonChicago

TUS - ORD

TUSORD

Tucson

Sun 1/18

2:50 pm-11:53 pm

1 stop8h 03m

Chicago O'Hare Intl

Wed 1/28

2:20 pm-2:04 pm

1 stop24h 44m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

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, February is the cheapest month in which you can book a flight from Tucson to Illinois (average of $104). Flying from Tucson to Illinois in August is currently the most expensive (average of $225). 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 November 13, 2025.

It’s typically best to fly out from Tucson to Illinois at noon. Doing so could potentially save you 26% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

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

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

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 November 13, 2025.

The most flights from TUS to USIL are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 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 November 13, 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
4,236 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,236 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,015 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,050 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,114 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from Tucson to Illinois?

    United Airlines, Southwest, and Delta can get you from Tucson to Illinois in just under 7h 40m. Your travel time can differ by up to 25m. The distance from Tucson to Illinois is about 1241 mi. This flight may include one or multiple stops.

  • 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 $100. Users have also found prices from $144 and $144 on Delta and American Airlines, 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: SkyWest Airlines (92%), Qatar Airways (83%), United Airlines( 82%).

  • 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 $1,044. The most popular route, (Tucson - Chicago O'Hare Intl), can usually be booked for $216.

  • 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, February is the cheapest month in which you can book a flight from Tucson to Illinois (average of $104). Flying from Tucson to Illinois in August is currently the most expensive (average of $225). 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$218FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$256Average$463FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$270Average$470FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$300Average$471FlexibilityNo cancel feeOn-time63%

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