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Cheap flights from Illinois to Arizona from $109

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 6/8. 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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0 bags

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Find the cheapest flights from Illinois to Arizona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
9:13 pm - 10:35 pm
RFD
-
AZA
3h 22mnonstop
Allegiant Air Logo
3:25 pm - 8:34 pm
AZA
-
RFD
3h 09mnonstop
$200Allegiant Air
Mon, Aug 3 - Fri, Aug 7
Allegiant Air Logo
9:13 pm - 10:35 pm
RFD
-
AZA
3h 22mnonstop
Allegiant Air Logo
3:25 pm - 8:34 pm
AZA
-
RFD
3h 09mnonstop
$201Allegiant Air
Mon, Aug 3 - Fri, Aug 7
Frontier Logo
6:50 am - 8:58 am
ORD
-
LAS
4h 08mnonstop
Frontier Logo
11:55 pm - 5:42 am
LAS
-
ORD
3h 47mnonstop
$215Frontier
Mon, Sep 14 - Wed, Sep 16
Frontier Logo
7:20 am - 9:36 am
ORD
-
LAS
4h 16mnonstop
Frontier Logo
11:20 pm - 5:07 am
LAS
-
ORD
3h 47mnonstop
$216Frontier
Sat, Jun 20 - Wed, Jun 24
American Airlines Logo
7:25 am - 9:09 am
ORD
-
PHX
3h 44mnonstop
American Airlines Logo
3:55 pm - 10:00 pm
PHX
-
ORD
4h 05mnonstop
$253American Airlines
Tue, Jul 21 - Tue, Aug 11
American Airlines Logo
5:19 pm - 7:04 pm
ORD
-
PHX
3h 45mnonstop
American Airlines Logo
1:15 am - 6:50 am
PHX
-
ORD
3h 35mnonstop
$254American Airlines
Fri, Jul 3 - Mon, Jul 6
Southwest Logo
8:50 pm - 10:30 pm
MDW
-
PHX
3h 40mnonstop
Southwest Logo
11:55 pm - 5:10 am
PHX
-
MDW
3h 15mnonstop
$255Southwest
Sat, Jun 27 - Fri, Jul 3
Southwest Logo
9:10 pm - 11:05 pm
MDW
-
LAS
3h 55mnonstop
Southwest Logo
3:25 pm - 9:05 pm
LAS
-
MDW
3h 40mnonstop
$267Southwest
Wed, Jul 1 - Sat, Jul 4
United Airlines Logo
5:42 pm - 10:44 pm
MLI
-
PHX
6h 02m
1 stop
United Airlines Logo
10:50 am - 8:58 pm
PHX
-
MLI
9h 08m
2 stops
$304United Airlines
Tue, Nov 10 - Tue, Nov 17
United Airlines Logo
7:45 pm - 10:11 pm
ORD
-
TUS
4h 26mnonstop
United Airlines Logo
7:20 am - 1:05 pm
TUS
-
ORD
3h 45mnonstop
$310United Airlines
Fri, Jul 24 - Thu, Jul 30

Allegiant Air flights from Illinois to Arizona

Our best Allegiant Air deals on Illinois to Arizona flight tickets
Allegiant Air
Aug 3
RFD9:13 pmChicago Greater Rockford
3h 22m
AZA10:35 pmPhoenix-Mesa Gateway
Aug 7
AZA3:25 pmPhoenix-Mesa Gateway
3h 09m
RFD8:34 pmChicago Greater Rockford
$200
Allegiant Air
Aug 3
RFD9:13 pmChicago Greater Rockford
3h 22m
AZA10:35 pmPhoenix-Mesa Gateway
Aug 7
AZA3:25 pmPhoenix-Mesa Gateway
3h 09m
RFD8:34 pmChicago Greater Rockford
$201
Allegiant Air
Jun 13
RFD1:04 pmChicago Greater Rockford
3h 24m
AZA2:28 pmPhoenix-Mesa Gateway
Jun 19
AZA3:11 pmPhoenix-Mesa Gateway
3h 09m
RFD8:20 pmChicago Greater Rockford
$202

Alaska Airlines flights from Illinois to Arizona

Our best Alaska Airlines deals on Illinois to Arizona flight tickets
Alaska Airlines
Aug 5
ORD6:20 amChicago O'Hare Intl
8h 03m
1 stop
PHX12:23 pmPhoenix Sky Harbor Intl
Aug 12
PHX1:05 pmPhoenix Sky Harbor Intl
8h 31m
1 stop
ORD11:36 pmChicago O'Hare Intl
$240
Alaska Airlines
Oct 7
ORD2:21 pmChicago O'Hare Intl
7h 07m
1 stop
LAS7:28 pmLas Vegas Harry Reid Intl
Oct 14
LAS11:22 amLas Vegas Harry Reid Intl
10h 37m
1 stop
ORD11:59 pmChicago O'Hare Intl
$249
Alaska Airlines
Aug 8
ORD6:20 amChicago O'Hare Intl
8h 03m
1 stop
PHX12:23 pmPhoenix Sky Harbor Intl
Aug 12
PHX3:13 pmPhoenix Sky Harbor Intl
6h 23m
1 stop
ORD11:36 pmChicago O'Hare Intl
$250

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 May 27, 2026.
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

Cheapest round-trip
Quickest round-trip

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Mon 8/3

9:13 pm-10:35 pm

Nonstop3h 22m

Phoenix-Mesa Gateway

Fri 8/7

3:25 pm-8:34 pm

Nonstop3h 09m

$200

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Mon 8/3

9:13 pm-10:35 pm

Nonstop3h 22m

Phoenix-Mesa Gateway

Fri 8/7

3:25 pm-8:34 pm

Nonstop3h 09m

$201

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Mon 9/14

6:50 am-8:58 am

Nonstop4h 08m

Las Vegas Harry Reid Intl

Wed 9/16

11:55 pm-5:42 am

Nonstop3h 47m

$215

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sat 6/20

7:20 am-9:36 am

Nonstop4h 16m

Las Vegas Harry Reid Intl

Wed 6/24

11:20 pm-5:07 am

Nonstop3h 47m

$216

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Tue 7/21

7:25 am-9:09 am

Nonstop3h 44m

Phoenix Sky Harbor Intl

Tue 8/11

3:55 pm-10:00 pm

Nonstop4h 05m

$253

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Fri 7/3

5:19 pm-7:04 pm

Nonstop3h 45m

Phoenix Sky Harbor Intl

Mon 7/6

1:15 am-6:50 am

Nonstop3h 35m

$254

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Sat 6/27

8:50 pm-10:30 pm

Nonstop3h 40m

Phoenix Sky Harbor Intl

Fri 7/3

11:55 pm-5:10 am

Nonstop3h 15m

$255

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Wed 7/1

9:10 pm-11:05 pm

Nonstop3h 55m

Las Vegas Harry Reid Intl

Sat 7/4

3:25 pm-9:05 pm

Nonstop3h 40m

$267

MolinePhoenix

MLI - PHX

MLIPHX

Moline Quad-City

Tue 11/10

5:42 pm-10:44 pm

1 stop6h 02m

Phoenix Sky Harbor Intl

Tue 11/17

10:50 am-8:58 pm

2 stops9h 08m

$304

ChicagoTucson

ORD - TUS

ORDTUS

Chicago O'Hare Intl

Fri 7/24

7:45 pm-10:11 pm

Nonstop4h 26m

Tucson

Thu 7/30

7:20 am-1:05 pm

Nonstop3h 45m

$310

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 January is, on average, the cheapest month to fly to Arizona from Illinois, with most prices found around $226. If you aren’t able to travel to Arizona during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $234.

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 Saturday. momondo users have found tickets for Saturday departures for as low as $294. 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 $362.

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 at noon. Flights from Illinois to Arizona during this time can be as low as $304. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $330 on average. Flights to Arizona from Illinois in the afternoon 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 Greater Rockford to Phoenix-Mesa Gateway for the best Illinois - Arizona flight prices

How far in advance should I book a flight from Illinois 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 $290 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 $251 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

$68

Fastest flight time

3h 10m

Direct flights

Every day

Airports in Arizona

66 airports
The best one-way flight to Arizona from Illinois in the past 72 hours is $68. The best round-trip flight deal from Illinois to Arizona found on momondo in the last 72 hours is $155.
The fastest flight from Illinois to Arizona takes 3h 10m
Direct flights go from Illinois to Arizona every day.
There are 66 airports in Arizona. From Illinois there are direct flights to Phoenix Sky Harbor Intl (PHX), Phoenix-Mesa Gateway (AZA).
Search flight deals

Frequently asked questions about flying from Illinois to Arizona

  • 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 $65Free CancellationRating
5.6
2,932 reviews
Search Frontier flights
Allegiant AirPriceFrom $79Free CancellationRating
7.3
710 reviews
Search Allegiant Air flights
DeltaPriceFrom $108Free CancellationRating
7.9
8,423 reviews
Search Delta flights
Alaska AirlinesPriceFrom $154Free CancellationRating
7.9
12,421 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $184Free CancellationRating
7.4
9,749 reviews
Search United Airlines flights
JetBluePriceFrom $188Free CancellationRating
7.1
2,981 reviews
Search JetBlue flights
American AirlinesPriceFrom $196Free CancellationRating
7.1
11,639 reviews
Search American Airlines flights
SouthwestPriceFrom $202Free CancellationRating
7.9
4,265 reviews
Search Southwest 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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