HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$145+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — ORD
Jun 9 — Jun 161
Tue 6/9
Tue 6/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Tucson to Illinois 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 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 May 10, 2026.

This American Airlines deal was found by Cheapflights users on 5/5. 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 6/23:55 pm
TUS
-
MLI
1 stop5h 35m
American Airlines
Tue 6/96:52 pm
MLI
-
TUS
1 stop6h 09m
American Airlines
Deal found 5/5$320
This United Airlines deal was found by Cheapflights users on 5/5. 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 12/88:30 am
TUS
-
BMI
1 stop8h 22m
United Airlines
Tue 12/156:00 am
BMI
-
TUS
1 stop6h 40m
United Airlines
Deal found 5/5$329
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Wed 12/91:30 pm
TUS
-
BMI
2 stops9h 42m
United Airlines
Tue 12/156:00 am
BMI
-
TUS
1 stop6h 40m
United Airlines
Deal found 5/5$334
This Delta deal was found by Cheapflights users on 5/7. 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 7/144:47 pm
TUS
-
ORD
1 stop28h 31m
Delta
Tue 7/216:30 pm
ORD
-
TUS
1 stop18h 41m
Delta
Deal found 5/7$345
This Delta deal was found by Cheapflights users on 5/7. 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 7/74:47 pm
TUS
-
ORD
2 stops16h 45m
Delta
Wed 7/156:30 am
ORD
-
TUS
2 stops16h 29m
Delta
Deal found 5/7$355
This Southwest deal was found by Cheapflights users on 5/4. 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.
Wed 8/262:10 pm
TUS
-
MDW
1 stop6h 40m
Southwest
Tue 9/86:40 am
MDW
-
TUS
1 stop5h 15m
Southwest
Deal found 5/4$357
This American Airlines deal was found by Cheapflights users on 5/5. 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.
Wed 6/312:40 pm
TUS
-
ORD
Nonstop3h 47m
American Airlines
Wed 6/109:09 pm
ORD
-
TUS
Nonstop3h 52m
American Airlines
Deal found 5/5$357
This American Airlines deal was found by Cheapflights users on 5/9. 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 7/2112:35 pm
TUS
-
ORD
Nonstop3h 56m
American Airlines
Wed 7/299:00 pm
ORD
-
TUS
Nonstop3h 43m
American Airlines
Deal found 5/9$358
This Delta deal was found by Cheapflights users on 5/5. 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.
Wed 9/27:00 am
TUS
-
ORD
2 stops9h 01m
Delta
Tue 9/83:35 pm
ORD
-
TUS
1 stop8h 02m
Delta
Deal found 5/5$362
This Southwest deal was found by Cheapflights users on 5/6. 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 6/164:55 pm
TUS
-
STL
1 stop4h 35m
Southwest
Tue 6/236:00 am
STL
-
TUS
1 stop5h 15m
Southwest
Deal found 5/6$363
This American Airlines deal was found by Cheapflights users on 5/6. 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 6/612:31 pm
TUS
-
STL
1 stop9h 25m
American Airlines
Tue 6/97:04 am
STL
-
TUS
1 stop7h 26m
American Airlines
Deal found 5/6$365
This Delta deal was found by Cheapflights users on 5/7. 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 7/712:30 pm
TUS
-
ORD
1 stop26h 46m
Delta
Tue 7/143:22 pm
ORD
-
TUS
1 stop8h 17m
Delta
Deal found 5/7$366

Find flight deals from Tucson to Illinois

Keep the following information in mind while searching for Tucson to Illinois flight deals. Data was last updated May 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$320
(American Airlines)

One-way from

$145
(Frontier)

Popular in

April

Cheapest in

August

Average price

$470

Good round-trip deal

$448 or less

Good one-way deal

$259 or less
Provider with most accurate pricing for Tucson-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Tucson-Chicago (CHI) flights.
Search Deals
From Tucson to Illinois
Search Deals
One-way flight from Tucson to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Tucson to Illinois.
Search Deals
Price to beat on a one-way flight from Tucson to Illinois.
Search Deals

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 May 10, 2026.
Use the filters below to find and compare flights from Tucson to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TucsonMoline

TUS - MLI

TUSMLI

Tucson

Tue 6/2

3:55 pm-11:30 pm

1 stop5h 35m

Moline Quad-City

Tue 6/9

6:52 pm-11:01 pm

1 stop6h 09m

$320

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 9/16

4:00 pm-10:35 pm

1 stop4h 35m

Lambert-St Louis

Wed 9/23

3:45 pm-9:55 pm

2 stops8h 10m

$380

TucsonChicago

TUS - ORD

TUSORD

Tucson

Wed 8/26

6:29 am-9:58 pm

2 stops13h 29m

Chicago O'Hare Intl

Tue 9/1

5:30 am-11:37 am

1 stop8h 07m

$382

TucsonChicago

TUS - ORD

TUSORD

Tucson

Tue 6/2

6:50 am-9:50 pm

2 stops13h 00m

Chicago O'Hare Intl

Tue 6/9

8:52 am-9:42 pm

2 stops14h 50m

$387

TucsonChicago

TUS - MDW

TUSMDW

Tucson

Tue 7/21

6:20 am-6:25 pm

2 stops10h 05m

Chicago Midway

Wed 7/29

11:05 am-9:57 pm

2 stops12h 52m

$397

TucsonBloomington

TUS - BMI

TUSBMI

Tucson

Sat 5/23

3:55 pm-11:08 pm

1 stop5h 13m

Bloomington-Normal

Wed 5/27

5:00 am-1:13 pm

2 stops10h 13m

$404

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 6/2

4:20 pm-11:15 pm

1 stop4h 55m

Lambert-St Louis

Thu 6/18

5:35 am-9:00 am

1 stop5h 25m

$405

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 8/22

2:20 pm-10:00 pm

1 stop5h 40m

Lambert-St Louis

Sun 8/30

6:40 pm-11:15 pm

1 stop6h 35m

$407

TucsonChicago

TUS - ORD

TUSORD

Tucson

Tue 7/7

12:30 pm-8:30 am

2 stops18h 00m

Chicago O'Hare Intl

Thu 7/9

8:27 am-3:50 pm

2 stops9h 23m

$410

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 6/23

5:40 am-3:10 pm

2 stops7h 30m

Lambert-St Louis

Sat 6/27

3:50 pm-9:40 pm

2 stops7h 50m

$415

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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

How far ahead should I book a flight from Tucson to Illinois?

The best time to book flights from Tucson to Illinois is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, July is the cheapest month in which you can book a flight from Tucson to Illinois (average of $115). Flying from Tucson to Illinois in January is currently the most expensive (average of $259). 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 May 10, 2026.

It’s typically best to fly out from Tucson to Illinois at noon. Doing so could potentially save you 49% 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 May 2, 2026.

Travelers seeking maximum savings on their Tucson to Illinois flight should consider departing on Thursday afternoons when fares are most often at their lowest. Monday afternoons 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 May 10, 2026.

The most flights from TUS to USIL are scheduled on a Friday (14 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (11 on average).

How much does it cost to fly round-trip from Tucson to Illinois?

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 May 10, 2026.
Read through reviews of airlines operating flights from Tucson to Illinois, such as Southwest,United Airlines, andAmerican 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
4,303 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,303 reviews
Southwest
8.0
Very good
4,303 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,696 reviews
Southwest
8.0
Very good
4,303 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,668 reviews
Southwest
8.0
Very good
4,303 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.6
Fair
2,958 reviews
Southwest
8.0
Very good
4,303 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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?

    American Airlines, Southwest, and Delta can get you from Tucson to Illinois in just under 4h 35m. Your travel time can differ by up to 8h 54m. 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 $78. Users have also found prices from $145 and $145 on American Airlines and United 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: Royal Jordanian (88%), United Airlines (79%), SkyWest Airlines( 78%).

  • What are the cheapest flights from Tucson to Illinois?

    The cheapest flight price from Tucson to Illinois is $180. On average you can expect to pay $917. The most popular route, (Tucson - Chicago O'Hare Intl), can usually be booked for $345.

  • 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, July is the cheapest month in which you can book a flight from Tucson to Illinois (average of $115). Flying from Tucson to Illinois in January is currently the most expensive (average of $259). 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

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 Tucson to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Sky Harbor Intl to Seattle flights
Sky Harbor Intl to O'Hare Intl flights
Sky Harbor Intl to Dallas/Fort Worth flights
Sky Harbor Intl to John F Kennedy Intl flights
Sky Harbor Intl to Newark flights
Sky Harbor Intl to Denver flights
Las Vegas to Seattle flights
Sky Harbor Intl to San Francisco flights
Sky Harbor Intl to Las Vegas flights
Sky Harbor Intl to Boston flights
Las Vegas to John F Kennedy Intl flights
Sky Harbor Intl to Minneapolis flights
Sky Harbor Intl to Honolulu flights
Sky Harbor Intl to Hobby flights
Sky Harbor Intl to Orlando flights
Sky Harbor Intl to Dulles Intl flights
Las Vegas to Newark flights
Las Vegas to Los Angeles flights
Sky Harbor Intl to Los Angeles flights
Las Vegas to Dallas/Fort Worth flights
Sky Harbor Intl to Portland flights
Sky Harbor Intl to LaGuardia flights
Sky Harbor Intl to Detroit flights
Sky Harbor Intl to Atlanta flights
Sky Harbor Intl to George Bush Intcntl flights
Sky Harbor Intl to Salt Lake City flights
Las Vegas to O'Hare Intl flights
Sky Harbor Intl to Reagan-National flights
Las Vegas to LaGuardia flights
Las Vegas to Honolulu flights
Las Vegas to Orlando flights
Las Vegas to San Francisco flights
Las Vegas to Reno flights
Las Vegas to Santa Ana flights
Tucson to Seattle flights
Sky Harbor Intl to Austin flights
Sky Harbor Intl to Baltimore flights
Sky Harbor Intl to Nashville flights
Sky Harbor Intl to Miami flights
Sky Harbor Intl to San Jose flights
Sky Harbor Intl to Midway flights
Sky Harbor Intl to Philadelphia flights
Las Vegas to Boston flights
Las Vegas to Hobby flights
Las Vegas to Denver flights
Sky Harbor Intl to Everett flights
Las Vegas to Portland flights
Las Vegas to Atlanta flights
Sky Harbor Intl to Santa Ana flights
Las Vegas to Detroit flights

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 May 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$168Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$268Average$429FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$270Average$454FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$300Average$425FlexibilityNo 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.