Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Illinois to Arizona from $57

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 4/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Illinois to Arizona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
11:44 am - 10:28 pm
STL
-
LAS
12h 44m
1 stop
Frontier Logo
6:00 am - 11:22 am
LAS
-
STL
3h 22mnonstop
$143Frontier
Sun, Apr 26 - Fri, May 1
Frontier Logo
1:35 pm - 3:39 pm
MDW
-
PHX
4h 04mnonstop
Frontier Logo
1:00 pm - 9:37 pm
PHX
-
MDW
6h 37m
1 stop
$144Frontier
Mon, Apr 27 - Fri, May 1
Frontier Logo
8:55 am - 11:10 am
ORD
-
PHX
4h 15mnonstop
Frontier Logo
11:12 am - 4:53 pm
PHX
-
ORD
3h 41mnonstop
$144Frontier
Sat, May 2 - Thu, May 7
Allegiant Air Logo
2:51 pm - 4:25 pm
RFD
-
AZA
3h 34mnonstop
Allegiant Air Logo
2:44 pm - 7:45 pm
AZA
-
RFD
3h 01mnonstop
$150Allegiant Air
Wed, May 6 - Mon, May 11
Allegiant Air Logo
8:35 pm - 10:09 pm
RFD
-
AZA
3h 34mnonstop
Allegiant Air Logo
2:44 pm - 7:45 pm
AZA
-
RFD
3h 01mnonstop
$151Allegiant Air
Mon, May 4 - Mon, May 11
Southwest Logo
8:55 pm - 10:50 pm
MDW
-
LAS
3h 55mnonstop
Southwest Logo
11:55 pm - 5:25 am
LAS
-
MDW
3h 30mnonstop
$179Southwest
Tue, Apr 21 - Wed, Apr 22
American Airlines Logo
9:45 am - 11:46 am
ORD
-
TUS
4h 01mnonstop
American Airlines Logo
12:28 pm - 6:05 pm
TUS
-
ORD
3h 37mnonstop
$333American Airlines
Tue, Mar 31 - Wed, Apr 8
Southwest Logo
7:45 am - 4:45 pm
ORD
-
TUS
11h 00m
2 stops
Southwest Logo
11:00 am - 10:20 pm
TUS
-
ORD
9h 20m
1 stop
$334Southwest
Tue, Apr 14 - Sat, Apr 18
American Airlines Logo
9:45 am - 11:46 am
ORD
-
TUS
4h 01mnonstop
American Airlines Logo
5:14 am - 10:45 am
TUS
-
ORD
3h 31mnonstop
$337American Airlines
Thu, Apr 2 - Tue, Apr 7
Delta Logo
2:25 pm - 9:51 pm
ORD
-
TUS
9h 26m
1 stop
Delta Logo
6:00 am - 4:42 pm
TUS
-
ORD
8h 42m
1 stop
$345Delta
Fri, Apr 17 - Sat, Apr 18

Spirit Airlines flights from Illinois to Arizona

Our best Spirit Airlines deals on Illinois to Arizona flight tickets
Spirit Airlines
Apr 17
ORD10:07 pmChicago O'Hare Intl
3h 52m
LAS11:59 pmLas Vegas Harry Reid Intl
Apr 20
LAS2:59 pmLas Vegas Harry Reid Intl
6h 28m
1 stop
ORD11:27 pmChicago O'Hare Intl
$160
Spirit Airlines
Apr 30
ORD8:52 pmChicago O'Hare Intl
4h 02m
LAS10:54 pmLas Vegas Harry Reid Intl
May 2
LAS12:18 amLas Vegas Harry Reid Intl
3h 32m
ORD5:50 amChicago O'Hare Intl
$161
Spirit Airlines
May 14
ORD2:00 pmChicago O'Hare Intl
6h 40m
1 stop
LAS6:40 pmLas Vegas Harry Reid Intl
May 19
LAS10:52 pmLas Vegas Harry Reid Intl
9h 31m
1 stop
ORD10:23 amChicago O'Hare Intl
$164

Frontier flights from Illinois to Arizona

Our best Frontier deals on Illinois to Arizona flight tickets
Frontier
Apr 26
STL11:44 amLambert-St Louis
12h 44m
1 stop
LAS10:28 pmLas Vegas Harry Reid Intl
May 1
LAS6:00 amLas Vegas Harry Reid Intl
3h 22m
STL11:22 amLambert-St Louis
$143
Frontier
Apr 10
STL8:16 pmLambert-St Louis
25h 55m
1 stop
LAS8:11 pmLas Vegas Harry Reid Intl
Apr 18
LAS10:00 amLas Vegas Harry Reid Intl
3h 21m
STL3:21 pmLambert-St Louis
$144
Frontier
Mar 19
STL8:06 pmLambert-St Louis
4h 02m
LAS10:08 pmLas Vegas Harry Reid Intl
Mar 24
LAS6:05 amLas Vegas Harry Reid Intl
3h 14m
STL11:19 amLambert-St Louis
$145

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 March 1, 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

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 4/26

11:44 am-10:28 pm

1 stop12h 44m

Las Vegas Harry Reid Intl

Fri 5/1

6:00 am-11:22 am

Nonstop3h 22m

$143

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Mon 4/27

1:35 pm-3:39 pm

Nonstop4h 04m

Phoenix Sky Harbor Intl

Fri 5/1

1:00 pm-9:37 pm

1 stop6h 37m

$144

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Sat 5/2

8:55 am-11:10 am

Nonstop4h 15m

Phoenix Sky Harbor Intl

Thu 5/7

11:12 am-4:53 pm

Nonstop3h 41m

$144

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Wed 5/6

2:51 pm-4:25 pm

Nonstop3h 34m

Phoenix-Mesa Gateway

Mon 5/11

2:44 pm-7:45 pm

Nonstop3h 01m

$150

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Mon 5/4

8:35 pm-10:09 pm

Nonstop3h 34m

Phoenix-Mesa Gateway

Mon 5/11

2:44 pm-7:45 pm

Nonstop3h 01m

$151

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Tue 4/21

8:55 pm-10:50 pm

Nonstop3h 55m

Las Vegas Harry Reid Intl

Wed 4/22

11:55 pm-5:25 am

Nonstop3h 30m

$179

ChicagoTucson

ORD - TUS

ORDTUS

Chicago O'Hare Intl

Tue 3/31

9:45 am-11:46 am

Nonstop4h 01m

Tucson

Wed 4/8

12:28 pm-6:05 pm

Nonstop3h 37m

$333

ChicagoTucson

ORD - TUS

ORDTUS

Chicago O'Hare Intl

Tue 4/14

7:45 am-4:45 pm

2 stops11h 00m

Tucson

Sat 4/18

11:00 am-10:20 pm

1 stop9h 20m

$334

ChicagoTucson

ORD - TUS

ORDTUS

Chicago O'Hare Intl

Thu 4/2

9:45 am-11:46 am

Nonstop4h 01m

Tucson

Tue 4/7

5:14 am-10:45 am

Nonstop3h 31m

$337

ChicagoTucson

ORD - TUS

ORDTUS

Chicago O'Hare Intl

Fri 4/17

2:25 pm-9:51 pm

1 stop9h 26m

Tucson

Sat 4/18

6:00 am-4:42 pm

1 stop8h 42m

$345

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 August is, on average, the cheapest month to fly to Arizona from Illinois, with most prices found around $229. If you aren’t able to travel to Arizona during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $229.

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 $295. 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 $356.

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 afternoon. Flights from Illinois to Arizona during this time can be as low as $291. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $322 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 O'Hare Intl 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 $282 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 $257 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

$89

Fastest flight time

3h 10m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in Arizona

66 airports
The best one-way flight to Arizona from Illinois in the past 72 hours is $89. The best round-trip flight deal from Illinois to Arizona found on momondo in the last 72 hours is $190.
The fastest flight from Illinois to Arizona takes 3h 10m
Direct flights go from Illinois to Arizona on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: Allegiant Air and Frontier.
There are 66 airports in Arizona. From Illinois there are direct flights to Phoenix Sky Harbor Intl (PHX), Phoenix-Mesa Gateway (AZA), 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
Allegiant AirPriceFrom $66Free CancellationRating
7.2
715 reviews
Search Allegiant Air flights
FrontierPriceFrom $66Free CancellationRating
5.7
3,041 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $79Free CancellationRating
6.3
8,485 reviews
Search Spirit Airlines flights
DeltaPriceFrom $108Free CancellationRating
7.9
8,239 reviews
Search Delta flights
Alaska AirlinesPriceFrom $154Free CancellationRating
8.0
11,974 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $180Free CancellationRating
7.4
9,372 reviews
Search United Airlines flights
JetBluePriceFrom $184Free CancellationRating
7.2
2,894 reviews
Search JetBlue flights
American AirlinesPriceFrom $194Free CancellationRating
7.1
11,372 reviews
Search American Airlines flights
SouthwestPriceFrom $206Free CancellationRating
8.0
4,305 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

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 3/31
Tue 4/7
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Arizona

Popular cities in Arizona

Popular flights according to clicks in the last 7 days on momondo
Flights to New Yorkfrom $55
Flights to Los Angelesfrom $54
Flights to Miamifrom $49
Flights to Orlandofrom $46
Flights to Chicagofrom $55
Flights to San Franciscofrom $50
Flights to Las Vegasfrom $53
Flights to Washington, D.C.from $56
Flights to Bostonfrom $76
Flights to Atlantafrom $53
Flights to Dallasfrom $60
Flights to Seattlefrom $48