What airlines fly to Illinois?

American Airlines, Allegiant Air and United Airlines are the top three most popular airlines that fly to Illinois from Tucson according to our data. American Airlines is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How many flights depart from Tucson to Illinois on average per week?

As of September 2025, 44 flights take off from Tucson and land in Illinois each week. The most common flight departure day for this route is Mon, with 18% of weekly flights taking off on this day.

How many flights depart from Tucson to Illinois on average per day?

The number of flights available between Tucson and Illinois is 6 per day as of September 2025. The most frequent departure time is 12:00PM, with 64% of daily flights leaving in the afternoon.

What is the cheapest airline that flies from Tucson to Illinois?

Frontier, Sun Country Air, and Southwest are the most popular carriers operating from Tucson to Illinois

When did momondo last update prices for flights from Tucson Airport to Illinois?

Prices for flights from Tucson Airport to Illinois are updated daily.

How many operators does momondo search for flights from Tucson Airport to Illinois?

The number of operators available for flights from Tucson Airport to Illinois is 5 as of September 2025.

How old do you have to be to fly from Tucson Airport to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Tucson Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$72 Cheap Flights from Tucson to Illinois in 2025/26

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Find the cheapest flights from Tucson to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

11:35 am - 9:18 amTUS-ORD

19h 43m2 stops

1:03 pm - 1:51 pmORD-TUS

26h 48m1 stop

$257Multiple Airlines

Find Deal

Fri, Oct 3 - Sun, Oct 5

2:20 pm - 6:25 amTUS-ORD

15h 05m1 stop

10:43 pm - 1:35 pmORD-TUS

15h 52m1 stop

$263Multiple Airlines

Find Deal

Fri, Nov 14 - Sun, Nov 16

12:24 pm - 11:53 pmTUS-ORD

33h 29m2 stops

6:50 am - 10:57 amORD-TUS

6h 07m1 stop

$268Frontier

Find Deal

Mon, Oct 13 - Thu, Oct 16

4:26 pm - 11:58 pmTUS-STL

5h 32m1 stop

1:40 pm - 8:59 pmSTL-TUS

9h 19m2 stops

$292United Airlines

Find Deal

Sat, Oct 18 - Tue, Oct 21

12:24 pm - 11:05 amTUS-ORD

20h 41m2 stops

9:54 pm - 11:39 amORD-TUS

15h 45m1 stop

$299Frontier

Find Deal

Fri, Oct 10 - Sun, Oct 12

2:38 pm - 10:58 pmTUS-STL

7h 20m2 stops

6:00 am - 12:52 pmSTL-TUS

7h 52m1 stop

$314American Airlines

Find Deal

Tue, Nov 4 - Sat, Nov 8

2:42 pm - 11:55 pmTUS-MLI

8h 13m2 stops

10:52 am - 5:08 pmMLI-TUS

7h 16m2 stops

$316American Airlines

Find Deal

Sat, Nov 8 - Sat, Nov 15

2:30 pm - 9:04 pmTUS-STL

5h 34m1 stop

9:13 am - 3:15 pmSTL-TUS

8h 02m1 stop

$317United Airlines

Find Deal

Wed, Mar 4 - Wed, Mar 11

10:20 am - 9:00 pmTUS-STL

8h 40m2 stops

1:45 pm - 8:00 pmSTL-TUS

7h 15m2 stops

$337Southwest

Find Deal

Sat, Nov 1 - Sat, Nov 8

7:20 am - 4:35 pmTUS-STL

8h 15m2 stops

2:15 pm - 8:45 pmSTL-TUS

8h 30m2 stops

$342Southwest

Find Deal

Wed, Mar 4 - Wed, Mar 11

Alaska Airlines flights from Tucson to Illinois

Our best Alaska Airlines deals on Tucson to Illinois flight tickets

Alaska Airlines

Mar 3

TUS8:00 amTucson

8h 50m

1 stop

ORD5:50 pmChicago O'Hare Intl

Mar 4

ORD2:00 pmChicago O'Hare Intl

9h 36m

1 stop

TUS10:36 pmTucson

$359

Find similar

Alaska Airlines

Oct 31

TUS5:15 amTucson

17h 09m

1 stop

ORD12:24 amChicago O'Hare Intl

Nov 4

ORD3:25 pmChicago O'Hare Intl

9h 29m

1 stop

TUS11:54 pmTucson

$372

Find similar

Alaska Airlines

Dec 5

TUS11:59 amTucson

25h 40m

2 stops

ORD2:39 pmChicago O'Hare Intl

Dec 10

ORD10:00 amChicago O'Hare Intl

26h 00m

2 stops

TUS11:00 amTucson

$375

Find similar

United Airlines flights from Tucson to Illinois

Our best United Airlines deals on Tucson to Illinois flight tickets

United Airlines

Oct 18

TUS4:26 pmTucson

5h 32m

1 stop

STL11:58 pmLambert-St Louis

Oct 21

STL1:40 pmLambert-St Louis

9h 19m

2 stops

TUS8:59 pmTucson

$292

Find similar

United Airlines

Mar 4

TUS2:30 pmTucson

5h 34m

1 stop

STL9:04 pmLambert-St Louis

Mar 11

STL9:13 amLambert-St Louis

8h 02m

1 stop

TUS3:15 pmTucson

$317

Find similar

United Airlines

Mar 4

TUS2:30 pmTucson

5h 34m

1 stop

STL9:04 pmLambert-St Louis

Mar 11

STL10:30 amLambert-St Louis

8h 45m

2 stops

TUS5:15 pmTucson

$322

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TucsonChicago

TUS - ORD

TUSORD

Tucson

Fri 10/3

11:35 am-9:18 am

2 stops19h 43m

Chicago O'Hare Intl

Sun 10/5

1:03 pm-1:51 pm

1 stop26h 48m

$257

TucsonChicago

TUS - ORD

TUSORD

Tucson

Fri 11/14

2:20 pm-6:25 am

1 stop15h 05m

Chicago O'Hare Intl

Sun 11/16

10:43 pm-1:35 pm

1 stop15h 52m

$263

TucsonChicago

TUS - ORD

TUSORD

Tucson

Mon 10/13

12:24 pm-11:53 pm

2 stops33h 29m

Chicago O'Hare Intl

Thu 10/16

6:50 am-10:57 am

1 stop6h 07m

$268

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 10/18

4:26 pm-11:58 pm

1 stop5h 32m

Lambert-St Louis

Tue 10/21

1:40 pm-8:59 pm

2 stops9h 19m

$292

TucsonChicago

TUS - ORD

TUSORD

Tucson

Fri 10/10

12:24 pm-11:05 am

2 stops20h 41m

Chicago O'Hare Intl

Sun 10/12

9:54 pm-11:39 am

1 stop15h 45m

$299

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 11/4

2:38 pm-10:58 pm

2 stops7h 20m

Lambert-St Louis

Sat 11/8

6:00 am-12:52 pm

1 stop7h 52m

$314

TucsonMoline

TUS - MLI

TUSMLI

Tucson

Sat 11/8

2:42 pm-11:55 pm

2 stops8h 13m

Moline Quad-City

Sat 11/15

10:52 am-5:08 pm

2 stops7h 16m

$316

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 3/4

2:30 pm-9:04 pm

1 stop5h 34m

Lambert-St Louis

Wed 3/11

9:13 am-3:15 pm

1 stop8h 02m

$317

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 11/1

10:20 am-9:00 pm

2 stops8h 40m

Lambert-St Louis

Sat 11/8

1:45 pm-8:00 pm

2 stops7h 15m

$337

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 3/4

7:20 am-4:35 pm

2 stops8h 15m

Lambert-St Louis

Wed 3/11

2:15 pm-8:45 pm

2 stops8h 30m

$342

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Tucson to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Tucson is in August. Flight prices, which tend to average around $347, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of August, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $373.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Tucson to Illinois is on a Wednesday when prices can be found for as low as $474. Flights from Tucson to Illinois on a Sunday will generally be more expensive and average around $593. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Tucson to Illinois during this time can be as low as $486. Flights in the afternoon are often more expensive with an average ticket price of $508.

What is the cheapest Tucson to Illinois flight route?

Fly from Tucson to Chicago Midway for the best Tucson - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Tucson when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $435 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Tucson for as low as $331 on momondo.

What cabin class options are available on Tucson to Illinois flights?

There are 4 cabin classes available to choose from on Tucson to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Tucson to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Tucson to Illinois

Best Price Found	$223
Fastest flight time	3h 10m
Direct flights	Every day
Airports in Illinois	2 airports

The best one-way flight to Illinois from Tucson in the past 72 hours is $223. The best round-trip flight deal from Tucson to Illinois found on momondo in the last 72 hours is $336.

The fastest flight from Tucson to Illinois takes 3h 10m

Direct flights go from Tucson to Illinois every day.

There are 2 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

Search flight deals

When did momondo last update prices for flights from Tucson Airport to Illinois?
Prices for flights from Tucson Airport to Illinois are updated daily.
How many operators does momondo search for flights from Tucson Airport to Illinois?
The number of operators available for flights from Tucson Airport to Illinois is 5 as of September 2025.
How old do you have to be to fly from Tucson Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Tucson Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Tucson to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Tucson to Illinois is Boeing 737-800 (25.50% of total bookings). The next most popular plane models are Embraer 175 (Enhanced Winglets) (22.15%), Airbus A320-100/200 (10.29%), and Boeing 737-700 Passenger/BBJ1 (winglets) (10.07%).

Best airlines flying from Tucson to Illinois

Compare and see reviews for airlines that fly from Tucson to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $110	Free Cancellation	Rating 5.8 3,165 reviews	Search Frontier flights
United Airlines	PriceFrom $237	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
American Airlines	PriceFrom $256	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $300	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Tucson to Illinois?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Tucson to Illinois for you.

Can I find flights from Tucson to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from Tucson which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Tucson to Illinois?

momondo provides multiple filters to help you find the best flight to Illinois from Tucson. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Tucson to Illinois right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Tucson to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Illinois

Popular cities in Illinois

Flights to New Yorkfrom $50

Flights to Los Angelesfrom $44

Flights to Miamifrom $49

Flights to Chicagofrom $60

Flights to Orlandofrom $56

Flights to Las Vegasfrom $44

Flights to San Franciscofrom $60

Flights to Washington, D.C.from $56

Flights to Bostonfrom $67

Flights to Atlantafrom $51

Flights to Dallasfrom $59

Flights to Seattlefrom $102

Cheap flights from Tucson to Illinois from $72

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Tucson to Illinois departing on 11/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Find the cheapest flights from Tucson to Illinois

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Alaska Airlines flights from Tucson to Illinois

Our best Alaska Airlines deals on Tucson to Illinois flight tickets

United Airlines flights from Tucson to Illinois

Our best United Airlines deals on Tucson to Illinois flight tickets

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

See travel insights to Illinois from

How to get the cheapest flight ticket from Tucson to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Tucson to Illinois during this time can be as low as $486. Flights in the afternoon are often more expensive with an average ticket price of $508.

What is the cheapest Tucson to Illinois flight route?

Fly from Tucson to Chicago Midway for the best Tucson - Illinois flight prices

How far in advance should I book a flight to Illinois?

What cabin class options are available on Tucson to Illinois flights?

There are 4 cabin classes available to choose from on Tucson to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

What is the cheapest airline that flies from Tucson to Illinois?

Frontier, Sun Country Air, and Southwest are the most popular carriers operating from Tucson to Illinois

What airlines fly to Illinois?

How many flights depart from Tucson to Illinois on average per day?

The number of flights available between Tucson and Illinois is 6 per day as of September 2025. The most frequent departure time is 12:00PM, with 64% of daily flights leaving in the afternoon.

How many flights depart from Tucson to Illinois on average per week?

As of September 2025, 44 flights take off from Tucson and land in Illinois each week. The most common flight departure day for this route is Mon, with 18% of weekly flights taking off on this day.

Cheap Tucson to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Tucson to Illinois

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

When did momondo last update prices for flights from Tucson Airport to Illinois?

How many operators does momondo search for flights from Tucson Airport to Illinois?

How old do you have to be to fly from Tucson Airport to Illinois?

What documentation or ID do you need to fly to Illinois?

What is the most popular plane model from Tucson to Illinois?

Best airlines flying from Tucson to Illinois

Compare and see reviews for airlines that fly from Tucson to Illinois with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Tucson to Illinois?

Can I find flights from Tucson to Illinois with flexible booking policies on momondo?

How can momondo help me find flights from Tucson to Illinois?

I’m not ready to book a flight from Tucson to Illinois right now. Can momondo alert me if prices change?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo