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Illinois

$126+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — ORD
Apr 29 — May 61
Wed 4/29
Wed 5/6
1 adult, Economy
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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 March 30, 2026.

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.
Wed 4/223:47 pm
TUS
-
STL
1 stop5h 12m
American Airlines
Wed 4/295:20 am
STL
-
TUS
1 stop5h 39m
American Airlines
Deal found 3/25$251
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.
Wed 4/224:20 pm
TUS
-
STL
1 stop4h 55m
Southwest
Wed 4/295:30 am
STL
-
TUS
2 stops8h 25m
Southwest
Deal found 3/25$256
This Southwest deal was found by Cheapflights users on 3/26. 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 5/276:05 pm
TUS
-
MDW
1 stop8h 30m
Southwest
Tue 6/24:00 pm
MDW
-
TUS
Nonstop3h 45m
Southwest
Deal found 3/26$265
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.
Thu 5/73:53 pm
TUS
-
STL
1 stop5h 06m
American Airlines
Tue 5/125:21 pm
STL
-
TUS
1 stop8h 38m
American Airlines
Deal found 3/25$277
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.
Wed 4/155:37 pm
TUS
-
ORD
2 stops12h 24m
Delta
Tue 4/212:09 pm
ORD
-
TUS
1 stop9h 22m
Delta
Deal found 3/25$280
This Southwest deal was found by Cheapflights users on 3/26. 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 5/277:50 am
TUS
-
ORD
1 stop13h 05m
Southwest
Tue 6/24:50 pm
ORD
-
TUS
1 stop7h 20m
Southwest
Deal found 3/26$281
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 5/122:15 pm
TUS
-
STL
2 stops6h 44m
American Airlines
Tue 5/265:25 am
STL
-
TUS
1 stop5h 18m
American Airlines
Deal found 3/25$282
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.
Thu 5/76:00 am
TUS
-
ORD
Nonstop3h 32m
American Airlines
Tue 5/1210:07 pm
ORD
-
TUS
Nonstop3h 52m
American Airlines
Deal found 3/25$283
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.
Mon 4/273:47 pm
TUS
-
STL
1 stop5h 12m
American Airlines
Wed 4/295:51 am
STL
-
TUS
1 stop7h 55m
American Airlines
Deal found 3/25$290
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 4/142:15 pm
TUS
-
STL
1 stop7h 44m
American Airlines
Tue 4/215:20 am
STL
-
TUS
1 stop5h 39m
American Airlines
Deal found 3/25$293
This Southwest deal was found by Cheapflights users on 3/26. 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.
Thu 4/1612:45 pm
TUS
-
MDW
Nonstop3h 10m
Southwest
Wed 4/226:30 am
MDW
-
TUS
1 stop5h 55m
Southwest
Deal found 3/26$293
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Thu 4/165:05 pm
TUS
-
ORD
1 stop5h 27m
American Airlines
Wed 4/2210:11 pm
ORD
-
TUS
Nonstop3h 48m
American Airlines
Deal found 3/26$294

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 March 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$251
(American Airlines)

One-way from

$126
(American Airlines)

Popular in

November

Cheapest in

August

Average price

$453

Good round-trip deal

$413 or less

Good one-way deal

$213 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. 4% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 30, 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

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 5/7

3:53 pm-10:59 pm

1 stop5h 06m

Lambert-St Louis

Tue 5/12

5:21 pm-11:59 pm

1 stop8h 38m

$277

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 4/25

7:10 am-3:01 pm

1 stop5h 51m

Lambert-St Louis

Wed 4/29

6:20 am-1:11 pm

1 stop8h 51m

$313

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Mon 4/27

7:30 am-12:15 am

2 stops14h 45m

Lambert-St Louis

Wed 4/29

5:30 am-11:55 am

2 stops8h 25m

$316

TucsonChicago

TUS - MDW

TUSMDW

Tucson

Sat 5/2

11:00 am-11:25 pm

1 stop10h 25m

Chicago Midway

Mon 5/4

4:35 pm-6:20 pm

Nonstop3h 45m

$327

TucsonMoline

TUS - MLI

TUSMLI

Tucson

Sat 5/2

3:53 pm-11:29 pm

1 stop5h 36m

Moline Quad-City

Mon 5/11

6:40 pm-11:59 pm

1 stop7h 19m

$330

TucsonMoline

TUS - MLI

TUSMLI

Tucson

Mon 6/8

1:21 pm-11:30 pm

1 stop8h 09m

Moline Quad-City

Wed 6/17

6:56 pm-10:57 pm

1 stop6h 01m

$330

TucsonChicago

TUS - ORD

TUSORD

Tucson

Sat 5/2

5:50 am-2:30 pm

1 stop6h 40m

Chicago O'Hare Intl

Mon 5/4

6:15 pm-9:55 pm

1 stop5h 40m

$331

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 4/25

6:00 am-3:39 pm

1 stop7h 39m

Lambert-St Louis

Tue 4/28

2:20 pm-9:31 pm

1 stop9h 11m

$347

TucsonChicago

TUS - ORD

TUSORD

Tucson

Tue 4/28

7:10 am-6:04 pm

1 stop8h 54m

Chicago O'Hare Intl

Fri 5/1

2:09 pm-9:31 pm

1 stop9h 22m

$349

TucsonMoline

TUS - MLI

TUSMLI

Tucson

Mon 5/4

6:02 am-3:18 pm

1 stop7h 16m

Moline Quad-City

Mon 5/11

6:40 pm-11:59 pm

1 stop7h 19m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 60 resultsSorted by cheapest first
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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, September is the cheapest month in which you can book a flight from Tucson to Illinois (average of $106). Flying from Tucson to Illinois in February is currently the most expensive (average of $229). 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 30, 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 March 28, 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. Saturday 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 March 30, 2026.

The most flights from TUS to USIL are scheduled on a Sunday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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 March 30, 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
4,329 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

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
4,329 reviews
Southwest
8.0
Very good
4,329 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

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
9,514 reviews
Southwest
8.0
Very good
4,329 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

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
11,531 reviews
Southwest
8.0
Very good
4,329 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

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
5.7
Fair
3,010 reviews
Southwest
8.0
Very good
4,329 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

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, Delta, and Southwest can get you from Tucson to Illinois in just under 5h 06m. Your travel time can differ by up to 9h 39m. 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: SkyWest Airlines (90%), United Airlines (87%), Royal Jordanian( 86%).

  • What are the cheapest flights from Tucson to Illinois?

    The cheapest flight price from Tucson to Illinois is $219. On average you can expect to pay $881. The most popular route, (Tucson - Chicago O'Hare Intl), can usually be booked for $412.

  • 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, September is the cheapest month in which you can book a flight from Tucson to Illinois (average of $106). Flying from Tucson to Illinois in February is currently the most expensive (average of $229). 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 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$168Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$256Average$439FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$270Average$458FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$300Average$426FlexibilityNo cancel feeOn-time63%

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