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Tucson

$95+ Cheap flights from Illinois to Tucson (TUS)

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TUS
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Illinois to Tucson

Cheapest flights from Illinois to Tucson
Explore the most affordable flight options available from Illinois to Tucson. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Sat 3/712:14 pm
STL
-
TUS
1 stop21h 00m
Frontier
Sun 3/1511:49 am
TUS
-
STL
2 stops20h 00m
Frontier
Deal found 2/1$275
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 2/284:30 pm
STL
-
TUS
1 stop6h 01m
United Airlines
Tue 3/32:42 pm
TUS
-
STL
1 stop4h 44m
United Airlines
Deal found 2/2$287
This American Airlines deal was found by Cheapflights users on 2/1. 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 3/25:23 pm
PIA
-
TUS
1 stop6h 44m
American Airlines
Mon 3/93:42 pm
TUS
-
PIA
1 stop5h 16m
American Airlines
Deal found 2/1$289
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 2/2811:25 am
STL
-
TUS
2 stops11h 06m
United Airlines
Wed 3/42:42 pm
TUS
-
STL
1 stop4h 44m
United Airlines
Deal found 2/2$292
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/38:41 am
STL
-
TUS
1 stop5h 59m
United Airlines
Tue 3/104:43 pm
TUS
-
STL
1 stop4h 51m
United Airlines
Deal found 2/1$305
This Delta deal was found by Cheapflights users on 2/1. 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.
Fri 2/272:22 pm
STL
-
TUS
1 stop9h 08m
Delta
Wed 3/45:59 pm
TUS
-
STL
1 stop5h 26m
Delta
Deal found 2/1$315
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Fri 2/205:22 pm
PIA
-
TUS
1 stop7h 57m
American Airlines
Tue 2/241:28 pm
TUS
-
PIA
2 stops8h 57m
American Airlines
Deal found 2/2$319
This Southwest deal was found by Cheapflights users on 2/1. 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 3/313:25 pm
MDW
-
TUS
Nonstop3h 50m
Southwest
Tue 4/147:10 am
TUS
-
MDW
2 stops7h 25m
Southwest
Deal found 2/1$322
This Delta deal was found by Cheapflights users on 2/3. 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 4/86:00 am
STL
-
TUS
1 stop7h 30m
Delta
Wed 4/157:10 am
TUS
-
STL
1 stop8h 16m
Delta
Deal found 2/3$323
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 2/2812:21 pm
MLI
-
TUS
2 stops10h 10m
United Airlines
Tue 3/109:42 am
TUS
-
MLI
2 stops10h 40m
United Airlines
Deal found 2/2$324
This American Airlines deal was found by Cheapflights users on 2/1. 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 3/319:45 am
ORD
-
TUS
Nonstop4h 01m
American Airlines
Tue 4/146:00 am
TUS
-
ORD
Nonstop3h 32m
American Airlines
Deal found 2/1$325
This Southwest deal was found by Cheapflights users on 2/2. 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 3/42:35 pm
STL
-
TUS
1 stop8h 50m
Southwest
Wed 3/117:15 am
TUS
-
STL
2 stops10h 40m
Southwest
Deal found 2/2$326

Find flight deals from Illinois to Tucson

Keep the following information in mind while searching for Illinois to Tucson flight deals. Data was last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$280
(United Airlines)

One-way from

$95
(Expedia)

Popular in

December

Cheapest in

September

Average price

$444

Good round-trip deal

$337 or less

Good one-way deal

$238 or less
Provider with most accurate pricing for Chicago (CHI)-Tucson flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Tucson flights.
Search Deals
From Illinois to Tucson
Search Deals
One-way flight from Illinois to Tucson
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Tucson.
Search Deals
Price to beat on a one-way flight from Illinois to Tucson.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Tucson 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 February 4, 2026.
Use the filters below to find and compare flights from Illinois to Tucson that are best for you.

Fly from

Illinois

Fly to

Tucson

Route

Depart

Return

Price

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 2/25

4:13 pm-11:07 pm

1 stop7h 54m

Tucson

Sat 2/28

5:58 pm-11:59 pm

1 stop5h 01m

$287

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 2/28

2:22 pm-10:30 pm

1 stop9h 08m

Tucson

Tue 3/3

5:59 pm-12:25 am

1 stop5h 26m

$287

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 2/28

4:30 pm-9:31 pm

1 stop6h 01m

Tucson

Tue 3/3

2:42 pm-8:26 pm

1 stop4h 44m

$287

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 2/28

2:22 pm-10:30 pm

1 stop9h 08m

Tucson

Wed 3/4

5:59 pm-12:25 am

1 stop5h 26m

$287

PeoriaTucson

PIA - TUS

PIATUS

Greater Peoria

Mon 3/2

5:23 pm-11:07 pm

1 stop6h 44m

Tucson

Mon 3/9

3:42 pm-10:58 pm

1 stop5h 16m

$289

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 3/3

8:41 am-1:40 pm

1 stop5h 59m

Tucson

Tue 3/10

4:43 pm-11:34 pm

1 stop4h 51m

$305

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Fri 2/27

2:22 pm-10:30 pm

1 stop9h 08m

Tucson

Wed 3/4

5:59 pm-12:25 am

1 stop5h 26m

$315

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 3/17

5:21 pm-9:41 pm

1 stop6h 20m

Tucson

Tue 3/24

5:04 pm-12:21 am

1 stop5h 17m

$323

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 4/8

7:03 am-11:30 am

1 stop6h 27m

Tucson

Wed 4/15

7:10 am-5:26 pm

1 stop8h 16m

$323

MolineTucson

MLI - TUS

MLITUS

Moline Quad-City

Sat 2/28

12:21 pm-9:31 pm

2 stops10h 10m

Tucson

Tue 3/10

9:42 am-10:22 pm

2 stops10h 40m

$324

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Tucson

Have a flexible travel schedule? Discover the best time to fly to Tucson from Illinois 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 Illinois to Tucson

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

Currently, April is the cheapest month in which you can book a flight from Illinois to Tucson (average of $59). Flying from Illinois to Tucson in March is currently the most expensive (average of $146). 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 IL to TUS?

Find hourly flight availability from Illinois to Tucson. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 4, 2026.

When flying from Illinois to Tucson, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 19% versus a flight at noon.

Weekly flight availability from Illinois to Tucson

Explore weekly flight availability from Illinois to Tucson. 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 February 4, 2026.

The most flights from USIL to TUS are scheduled on a Monday (7 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Tucson. 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 into for flights to Tucson from Illinois?

    Located just 7.5 mi from the city center, Tucson (TUS) is the airport most travelers will use when flying to Tucson from Illinois.

  • How long is the flight from Illinois to Tucson?

    United Airlines, American Airlines, and Delta can get you from Illinois to Tucson in just under 6h 23m. Your travel time can differ by up to 2h 45m. There are 1296 mi between Illinois and Tucson. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Tucson one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $77. Users have also found prices from $123 and $123 on Southwest and American Airlines, respectively.

  • What are the most popular routes from Illinois to Tucson?

    While some choose either Chicago Midway - Tucson or Lambert-St Louis - Tucson, Chicago O'Hare Intl - Tucson is the most popular route from Illinois to Tucson.

  • What are the most reliable airlines from Illinois to Tucson?

    No one likes to see their flight delayed. When booking a flight from Illinois to Tucson consider choosing SkyWest Airlines (73%), American Airlines (72%) or Royal Jordanian (70%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to Tucson?

    Looking at all options, your cheapest flight can be booked for $153. While the most popular route (Chicago O'Hare Intl - Tucson) can be booked for $276 on average, our data indicates $825 when flying from Illinois to Tucson.

  • Can I find deals for flights from Illinois to Tucson that include hotel bookings?

    Yes. In addition to deals on Illinois to Tucson flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Tucson?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Tucson.

  • Can I find deals for business class flights from Illinois to Tucson?

    Yes. Cheapflights offers flight deals from Illinois to Tucson 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 Illinois to Tucson?

    Currently, April is the cheapest month in which you can book a flight from Illinois to Tucson (average of $59). Flying from Illinois to Tucson in March is currently the most expensive (average of $146). 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

Traveling to a place near Tucson?

Book flights to Tucson if you plan to visit one of these locations
Sierra Vista
Green Valley

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Alternative routes for Illinois to Tucson

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Illinois to Tucson

Discover the top 4 airlines that operate flights from Illinois to Tucson. 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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$144Average$278FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$252Average$480FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$265Average$441FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$268Average$433FlexibilityNo cancel feeOn-time69%

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