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$72+ 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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — ORD
feb. 7 — feb. 141
sáb. 2/7
sáb. 2/14
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 enero 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$177
(Frontier)

One-way from

$72
(Frontier)

Popular in

July

Cheapest in

August

Average price

$358

Good round-trip deal

$399 or less

Good one-way deal

$223 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, 1% potential price rise
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Cheapest flight prices on average. 0% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 enero 8, 2026.

This Frontier deal was found by Cheapflights users on 1/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/195:52 pmTUS - ORD
1 stop12h 46mFrontier
dom. 2/228:39 amORD - TUS
1 stop9h 18mFrontier
Deal found 1/7$177
This Frontier deal was found by Cheapflights users on 1/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/191:28 pmTUS - MDW
1 stop9h 20mFrontier
jue. 4/98:00 amMDW - TUS
1 stop9h 59mFrontier
Deal found 1/6$182
This Frontier deal was found by Cheapflights users on 1/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/191:28 pmTUS - ORD
1 stop9h 25mFrontier
jue. 4/97:15 amORD - TUS
1 stop10h 44mFrontier
Deal found 1/6$182
This Booking.com deal was found by Cheapflights users on 1/5. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/121:20 pmTUS - ORD
1 stop6h 43mFrontier
jue. 2/266:34 pmORD - TUS
1 stop19h 04mFrontier
Deal found 1/5$188
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/261:20 pmTUS - STL
1 stop7h 06mFrontier
sáb. 2/286:41 pmSTL - TUS
1 stop19h 42mFrontier
Deal found 1/7$190
This Frontier deal was found by Cheapflights users on 1/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/265:52 pmTUS - ORD
1 stop12h 42mFrontier
dom. 3/18:39 amORD - TUS
1 stop9h 18mFrontier
Deal found 1/7$190
This Travelocity deal was found by Cheapflights users on 1/7. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/265:52 pmTUS - ORD
1 stop12h 42mMultiple Airlines
lun. 3/23:54 pmORD - TUS
1 stop9h 05mMultiple Airlines
Deal found 1/7$193
This Flightnetwork deal was found by Cheapflights users on 1/6. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/191:20 pmTUS - ORD
1 stop6h 43mFrontier
jue. 2/266:34 pmORD - TUS
1 stop19h 04mFrontier
Deal found 1/6$201
This Expedia deal was found by Cheapflights users on 1/8. 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.
jue. 2/510:53 amTUS - ORD
1 stop7h 24mMultiple Airlines
lun. 3/27:00 amORD - TUS
1 stop17h 59mMultiple Airlines
Deal found 1/8$206
This American Airlines deal was found by Cheapflights users on 1/6. 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.
mié. 1/284:07 pmTUS - STL
1 stop6h 52mAmerican Airlines
mié. 2/42:38 pmSTL - TUS
1 stop8h 09mAmerican Airlines
Deal found 1/6$215
This Expedia deal was found by Cheapflights users on 1/8. 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.
jue. 2/59:49 pmTUS - ORD
1 stop21h 40mMultiple Airlines
lun. 2/96:06 pmORD - TUS
2 stops24h 22mMultiple Airlines
Deal found 1/8$216
This Frontier deal was found by Cheapflights users on 1/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/191:28 pmTUS - ORD
1 stop9h 25mFrontier
lun. 4/67:15 amORD - TUS
1 stop9h 07mFrontier
Deal found 1/6$220

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 enero 8, 2026.
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

jue. 2/26

1:20 pm-9:26 pm

1 stop7h 06m

Lambert-St Louis

sáb. 2/28

6:41 pm-1:23 pm

1 stop19h 42m

$190

TucsonChicago

TUS - ORD

TUSORD

Tucson

jue. 2/19

6:00 am-11:56 pm

1 stop16h 56m

Chicago O'Hare Intl

mar. 2/24

5:29 pm-11:59 pm

1 stop31h 30m

$221

TucsonChicago

TUS - ORD

TUSORD

Tucson

mié. 2/18

6:00 am-2:11 pm

1 stop31h 11m

Chicago O'Hare Intl

mar. 2/24

5:29 pm-11:59 pm

1 stop31h 30m

$221

TucsonChicago

TUS - ORD

TUSORD

Tucson

jue. 2/19

6:00 am-11:56 pm

1 stop16h 56m

Chicago O'Hare Intl

lun. 2/23

7:00 am-11:59 pm

1 stop17h 59m

$221

TucsonChicago

TUS - ORD

TUSORD

Tucson

jue. 1/29

6:00 am-5:10 pm

1 stop10h 10m

Chicago O'Hare Intl

lun. 2/2

8:00 am-11:59 pm

1 stop16h 59m

$240

TucsonChicago

TUS - ORD

TUSORD

Tucson

vie. 2/6

6:00 am-2:38 pm

1 stop31h 38m

Chicago O'Hare Intl

lun. 2/9

8:00 am-11:59 pm

1 stop16h 59m

$241

TucsonChicago

TUS - ORD

TUSORD

Tucson

vie. 3/20

1:30 pm-11:52 pm

1 stop8h 22m

Chicago O'Hare Intl

mar. 4/7

8:55 am-1:05 pm

1 stop6h 10m

$242

TucsonChicago

TUS - ORD

TUSORD

Tucson

sáb. 3/21

1:30 pm-11:52 pm

1 stop8h 22m

Chicago O'Hare Intl

mié. 4/8

7:05 am-2:14 pm

1 stop9h 09m

$242

TucsonChicago

TUS - MDW

TUSMDW

Tucson

jue. 2/5

12:20 pm-4:30 pm

Nonstop3h 10m

Chicago Midway

lun. 2/9

7:55 am-10:55 am

Nonstop4h 00m

$243

TucsonChicago

TUS - ORD

TUSORD

Tucson

jue. 1/29

7:44 am-12:25 pm

Nonstop3h 41m

Chicago O'Hare Intl

lun. 2/2

7:51 pm-11:15 pm

Nonstop4h 24m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

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 enero 8, 2026.

It’s typically best to fly out from Tucson to Illinois in the morning. Doing so could potentially save you 40% 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 January 3, 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 enero 8, 2026.

The most flights from TUS to USIL are scheduled on a Wednesday (8 on average). You will have fewer flight options on Monday, 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 enero 8, 2026.
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
4,250 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,250 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,141 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,095 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,061 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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?

    Frontier, Alaska Airlines, and Southwest can get you from Tucson to Illinois in just under 3h 10m. Your travel time can differ by up to 13h 46m. The distance from Tucson to Illinois is about 1437 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 $58. Users have also found prices from $121 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: Qatar Airways (100%), Envoy Air (100%), Royal Jordanian( 100%).

  • What are the cheapest flights from Tucson to Illinois?

    The cheapest flight price from Tucson to Illinois is $167. On average you can expect to pay $389. The most popular route, (Tucson - Chicago O'Hare Intl), can usually be booked for $188.

  • 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 enero 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$256Average$458FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$270Average$461FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$300Average$469FlexibilityNo cancel feeOn-time63%

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