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Cheap flights from Illinois to Arizona from $39

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Arizona departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to Arizona

Cheap round-trip flights

Spirit Airlines Logo
6:00 am - 7:45 amORD-LAS
3h 45mnonstop
Spirit Airlines Logo
11:10 pm - 4:50 amLAS-ORD
3h 40mnonstop
$86Spirit Airlines
Find Deal
Tue, Aug 19 - Wed, Aug 20
Spirit Airlines Logo
6:00 am - 7:45 amORD-LAS
3h 45mnonstop
Spirit Airlines Logo
11:10 pm - 4:50 amLAS-ORD
3h 40mnonstop
$88Spirit Airlines
Find Deal
Mon, Aug 18 - Wed, Aug 20
Frontier Logo
9:54 pm - 12:05 amORD-LAS
4h 11mnonstop
Frontier Logo
2:59 pm - 8:59 pmLAS-ORD
4h 00mnonstop
$103Frontier
Find Deal
Mon, Oct 6 - Fri, Oct 10
Frontier Logo
9:54 pm - 12:05 amORD-LAS
4h 11mnonstop
Frontier Logo
6:00 am - 11:48 amLAS-ORD
3h 48mnonstop
$105Frontier
Find Deal
Mon, Sep 22 - Thu, Sep 25
Southwest Logo
7:20 pm - 9:10 pmMDW-LAS
3h 50mnonstop
Southwest Logo
6:10 am - 11:45 amLAS-MDW
3h 35mnonstop
$159Southwest
Find Deal
Sat, Aug 30 - Wed, Sep 3
American Airlines Logo
7:00 am - 8:34 amSTL-PHX
3h 34mnonstop
American Airlines Logo
3:25 pm - 8:27 pmPHX-STL
3h 02mnonstop
$161American Airlines
Find Deal
Tue, Oct 28 - Sat, Nov 1
Southwest Logo
7:20 pm - 9:15 pmMDW-LAS
3h 55mnonstop
Southwest Logo
11:40 pm - 5:05 amLAS-MDW
3h 25mnonstop
$173Southwest
Find Deal
Sat, Nov 1 - Mon, Nov 3
American Airlines Logo
7:53 am - 9:08 amSTL-PHX
3h 15mnonstop
American Airlines Logo
12:59 pm - 6:00 pmPHX-STL
3h 01mnonstop
$176American Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 3
United Airlines Logo
8:49 am - 12:28 pmORD-TUS
5h 39m1 stop
United Airlines Logo
11:39 am - 5:10 pmTUS-ORD
3h 31mnonstop
$275United Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2
United Airlines Logo
8:49 am - 12:28 pmORD-TUS
5h 39m1 stop
United Airlines Logo
6:00 am - 1:15 pmTUS-ORD
5h 15m1 stop
$284United Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2

Spirit Airlines flights from Illinois to Arizona

Our best Spirit Airlines deals on Illinois to Arizona flight tickets
Spirit Airlines
Aug 19
ORD6:00 amChicago O'Hare Intl
3h 45m
LAS7:45 amLas Vegas Harry Reid Intl
Aug 20
LAS11:10 pmLas Vegas Harry Reid Intl
3h 40m
ORD4:50 amChicago O'Hare Intl
$86
Find similar
Spirit Airlines
Aug 18
ORD6:00 amChicago O'Hare Intl
3h 45m
LAS7:45 amLas Vegas Harry Reid Intl
Aug 20
LAS11:10 pmLas Vegas Harry Reid Intl
3h 40m
ORD4:50 amChicago O'Hare Intl
$88
Find similar
Spirit Airlines
Aug 19
ORD6:00 amChicago O'Hare Intl
3h 45m
LAS7:45 amLas Vegas Harry Reid Intl
Aug 20
LAS11:10 pmLas Vegas Harry Reid Intl
3h 40m
ORD4:50 amChicago O'Hare Intl
$94
Find similar

Allegiant Air flights from Illinois to Arizona

Our best Allegiant Air deals on Illinois to Arizona flight tickets
Allegiant Air
Aug 24
RFD12:58 pmChicago Greater Rockford
3h 44m
LAS2:42 pmLas Vegas Harry Reid Intl
Aug 28
LAS6:45 amLas Vegas Harry Reid Intl
3h 23m
RFD12:08 pmChicago Greater Rockford
$101
Find similar
Allegiant Air
Aug 24
RFD12:58 pmChicago Greater Rockford
3h 44m
LAS2:42 pmLas Vegas Harry Reid Intl
Aug 28
LAS6:45 amLas Vegas Harry Reid Intl
3h 23m
RFD12:08 pmChicago Greater Rockford
$109
Find similar
Allegiant Air
Sep 28
RFD8:37 pmChicago Greater Rockford
3h 34m
LAS10:11 pmLas Vegas Harry Reid Intl
Oct 2
LAS7:30 amLas Vegas Harry Reid Intl
3h 24m
RFD12:54 pmChicago Greater Rockford
$117
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Arizona 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, momondo users made 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Illinois to Arizona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 8/19

6:00 am-7:45 am

Nonstop3h 45m

Las Vegas Harry Reid Intl

Wed 8/20

11:10 pm-4:50 am

Nonstop3h 40m

$86

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Mon 8/18

6:00 am-7:45 am

Nonstop3h 45m

Las Vegas Harry Reid Intl

Wed 8/20

11:10 pm-4:50 am

Nonstop3h 40m

$88

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Mon 10/6

9:54 pm-12:05 am

Nonstop4h 11m

Las Vegas Harry Reid Intl

Fri 10/10

2:59 pm-8:59 pm

Nonstop4h 00m

$103

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Mon 9/22

9:54 pm-12:05 am

Nonstop4h 11m

Las Vegas Harry Reid Intl

Thu 9/25

6:00 am-11:48 am

Nonstop3h 48m

$105

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Sat 8/30

7:20 pm-9:10 pm

Nonstop3h 50m

Las Vegas Harry Reid Intl

Wed 9/3

6:10 am-11:45 am

Nonstop3h 35m

$159

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 10/28

7:00 am-8:34 am

Nonstop3h 34m

Phoenix Sky Harbor Intl

Sat 11/1

3:25 pm-8:27 pm

Nonstop3h 02m

$161

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Sat 11/1

7:20 pm-9:15 pm

Nonstop3h 55m

Las Vegas Harry Reid Intl

Mon 11/3

11:40 pm-5:05 am

Nonstop3h 25m

$173

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 8/27

7:53 am-9:08 am

Nonstop3h 15m

Phoenix Sky Harbor Intl

Wed 9/3

12:59 pm-6:00 pm

Nonstop3h 01m

$176

ChicagoTucson

ORD - TUS

ORDTUS

Chicago O'Hare Intl

Tue 8/26

8:49 am-12:28 pm

1 stop5h 39m

Tucson

Tue 9/2

11:39 am-5:10 pm

Nonstop3h 31m

$275

ChicagoTucson

ORD - TUS

ORDTUS

Chicago O'Hare Intl

Tue 8/26

8:49 am-12:28 pm

1 stop5h 39m

Tucson

Tue 9/2

6:00 am-1:15 pm

1 stop5h 15m

$284

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Arizona from

How to get the cheapest flight ticket from Illinois to Arizona

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 Arizona?

The month of September is, on average, the cheapest month to fly to Arizona from Illinois, with most prices found around $199. If you aren’t able to travel to Arizona during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $227.

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

On average, the least expensive day to fly to Arizona from Illinois is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $307. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Arizona is Sunday, with ticket prices averaging around $405.

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

Our most recent data shows that the best time of day to fly to Arizona is in the evening. Flights from Illinois to Arizona during this time can be as low as $285. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $368 on average. Flights to Arizona from Illinois in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Illinois to Arizona flight route?

Fly from Chicago Midway to Phoenix Sky Harbor Intl for the best Illinois - Arizona flight prices

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

You are more likely to see cheaper flights to Arizona from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Arizona for around $289 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Arizona from Illinois for as low as $242 on momondo.

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

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

Can stopping save me money on Illinois to Arizona flights?

No. A direct flight is the cheapest option for a flight between Illinois to Arizona.

Cheap Illinois to Arizona flight deals and tips

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

Best Price Found

$39

Fastest flight time

3h 15m

Direct flights

Every day

Airports in Arizona

2 airports
The best one-way flight to Arizona from Illinois in the past 72 hours is $39. The best round-trip flight deal from Illinois to Arizona found on momondo in the last 72 hours is $86.
The fastest flight from Illinois to Arizona takes 3h 15m
Direct flights go from Illinois to Arizona every day.
There are 2 airports near Arizona: Phoenix Sky Harbor Intl (PHX), Las Vegas Harry Reid Intl (LAS)
Search flight deals

  • When did momondo last update prices for flights from Illinois to Arizona?

    Prices for flights from Illinois to Arizona were last updated today.

  • How many operators does momondo search for flights from Illinois to Arizona?

  • How old do you have to be to fly from Illinois to Arizona?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Arizona.

  • What documentation or ID do you need to fly to Arizona?

    The travel and health documents you'll need for your trip to Arizona 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 Arizona. 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 Illinois to Arizona?

Best airlines flying from Illinois to Arizona

Compare and see reviews for airlines that fly from Illinois to Arizona with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $69Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $98Free CancellationRating
6.3
8,048 reviews
Search Spirit Airlines flights
Allegiant AirPriceFrom $114Free CancellationRating
7.2
702 reviews
Search Allegiant Air flights
Alaska AirlinesPriceFrom $154Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $178Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $179Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
SouthwestPriceFrom $206Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
DeltaPriceFrom $216Free CancellationRating
8.0
7,981 reviews
Search Delta flights

Why use momondo?

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

It is quick and easy to find Illinois to Arizona flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Arizona that suits you.

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

Flights from Illinois to Arizona with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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

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

Yes momondo offers price alerts on flights to Arizona from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Arizona trip

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