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Cheap flights from Illinois to Arizona from $49

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 10/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Arizona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
1:06 pm - 2:31 pm
MLI
-
LAS
3h 25mnonstop
Allegiant Air Logo
7:05 am - 12:16 pm
LAS
-
MLI
3h 11mnonstop
$123Allegiant Air
Sun, Aug 23 - Thu, Aug 27
Allegiant Air Logo
1:06 pm - 2:31 pm
MLI
-
LAS
3h 25mnonstop
Allegiant Air Logo
7:05 am - 12:23 pm
LAS
-
MLI
3h 18mnonstop
$132Allegiant Air
Sun, Aug 30 - Thu, Sep 17
Frontier Logo
7:58 pm - 11:00 am
STL
-
LAS
17h 02m
1 stop
Frontier Logo
12:57 am - 7:13 pm
LAS
-
STL
16h 16m
1 stop
$182Frontier
Mon, Aug 24 - Sun, Aug 30
Frontier Logo
7:58 pm - 11:47 pm
STL
-
LAS
5h 49m
1 stop
Frontier Logo
10:35 am - 7:15 pm
LAS
-
STL
6h 40m
1 stop
$183Frontier
Mon, Sep 7 - Thu, Sep 10
American Airlines Logo
10:35 pm - 12:14 am
ORD
-
PHX
3h 39mnonstop
American Airlines Logo
6:47 pm - 12:28 am
PHX
-
ORD
3h 41mnonstop
$246American Airlines
Thu, Aug 6 - Wed, Aug 12
American Airlines Logo
7:40 pm - 9:22 pm
ORD
-
PHX
3h 42mnonstop
American Airlines Logo
5:05 am - 10:52 am
PHX
-
ORD
3h 47mnonstop
$247American Airlines
Thu, Aug 6 - Wed, Aug 12
Southwest Logo
5:20 pm - 7:00 pm
MDW
-
PHX
3h 40mnonstop
Southwest Logo
3:00 pm - 8:15 pm
PHX
-
MDW
3h 15mnonstop
$250Southwest
Wed, Aug 12 - Sat, Aug 15
Southwest Logo
5:40 am - 7:15 am
MDW
-
PHX
3h 35mnonstop
Southwest Logo
10:35 am - 5:10 pm
PHX
-
MDW
4h 35m
1 stop
$251Southwest
Sat, Sep 5 - Wed, Sep 9
United Airlines Logo
4:11 pm - 8:53 pm
ORD
-
PHX
6h 42m
1 stop
United Airlines Logo
6:20 am - 11:59 am
PHX
-
ORD
3h 39mnonstop
$255United Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
7:45 pm - 10:11 pm
ORD
-
TUS
4h 26mnonstop
United Airlines Logo
10:44 am - 4:30 pm
TUS
-
ORD
3h 46mnonstop
$397United Airlines
Thu, Aug 6 - Tue, Aug 11

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Allegiant Air flights from Illinois to Arizona

Our best Allegiant Air deals on Illinois to Arizona flight tickets
Allegiant Air
Aug 23
MLI1:06 pmMoline Quad-City
3h 25m
LAS2:31 pmLas Vegas Harry Reid Intl
Aug 27
LAS7:05 amLas Vegas Harry Reid Intl
3h 11m
MLI12:16 pmMoline Quad-City
$123
Allegiant Air
Aug 30
MLI1:06 pmMoline Quad-City
3h 25m
LAS2:31 pmLas Vegas Harry Reid Intl
Sep 17
LAS7:05 amLas Vegas Harry Reid Intl
3h 18m
MLI12:23 pmMoline Quad-City
$132
Allegiant Air
Aug 23
MLI1:06 pmMoline Quad-City
3h 25m
LAS2:31 pmLas Vegas Harry Reid Intl
Aug 27
LAS7:05 amLas Vegas Harry Reid Intl
3h 11m
MLI12:16 pmMoline Quad-City
$135

Frontier flights from Illinois to Arizona

Our best Frontier deals on Illinois to Arizona flight tickets
Frontier
Aug 24
STL7:58 pmLambert-St Louis
17h 02m
1 stop
LAS11:00 amLas Vegas Harry Reid Intl
Aug 30
LAS12:57 amLas Vegas Harry Reid Intl
16h 16m
1 stop
STL7:13 pmLambert-St Louis
$182
Frontier
Sep 7
STL7:58 pmLambert-St Louis
5h 49m
1 stop
LAS11:47 pmLas Vegas Harry Reid Intl
Sep 10
LAS10:35 amLas Vegas Harry Reid Intl
6h 40m
1 stop
STL7:15 pmLambert-St Louis
$183
Frontier
Sep 7
STL7:58 pmLambert-St Louis
5h 49m
1 stop
LAS11:47 pmLas Vegas Harry Reid Intl
Sep 10
LAS10:35 amLas Vegas Harry Reid Intl
6h 40m
1 stop
STL7:15 pmLambert-St Louis
$184

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 18, 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

MolineLas Vegas

MLI - LAS

MLILAS

Moline Quad-City

Sun 8/23

1:06 pm-2:31 pm

Nonstop3h 25m

Las Vegas Harry Reid Intl

Thu 8/27

7:05 am-12:16 pm

Nonstop3h 11m

$123

MolineLas Vegas

MLI - LAS

MLILAS

Moline Quad-City

Sun 8/30

1:06 pm-2:31 pm

Nonstop3h 25m

Las Vegas Harry Reid Intl

Thu 9/17

7:05 am-12:23 pm

Nonstop3h 18m

$132

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 8/24

7:58 pm-11:00 am

1 stop17h 02m

Las Vegas Harry Reid Intl

Sun 8/30

12:57 am-7:13 pm

1 stop16h 16m

$182

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 9/7

7:58 pm-11:47 pm

1 stop5h 49m

Las Vegas Harry Reid Intl

Thu 9/10

10:35 am-7:15 pm

1 stop6h 40m

$183

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Thu 8/6

10:35 pm-12:14 am

Nonstop3h 39m

Phoenix Sky Harbor Intl

Wed 8/12

6:47 pm-12:28 am

Nonstop3h 41m

$246

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Thu 8/6

7:40 pm-9:22 pm

Nonstop3h 42m

Phoenix Sky Harbor Intl

Wed 8/12

5:05 am-10:52 am

Nonstop3h 47m

$247

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Wed 8/12

5:20 pm-7:00 pm

Nonstop3h 40m

Phoenix Sky Harbor Intl

Sat 8/15

3:00 pm-8:15 pm

Nonstop3h 15m

$250

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Sat 9/5

5:40 am-7:15 am

Nonstop3h 35m

Phoenix Sky Harbor Intl

Wed 9/9

10:35 am-5:10 pm

1 stop4h 35m

$251

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Sat 8/29

4:11 pm-8:53 pm

1 stop6h 42m

Phoenix Sky Harbor Intl

Wed 9/2

6:20 am-11:59 am

Nonstop3h 39m

$255

ChicagoTucson

ORD - TUS

ORDTUS

Chicago O'Hare Intl

Thu 8/6

7:45 pm-10:11 pm

Nonstop4h 26m

Tucson

Tue 8/11

10:44 am-4:30 pm

Nonstop3h 46m

$397

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 $247. 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 $260.

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 $296. 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 $357.

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 $316. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $339 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 Moline Quad-City 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 $301 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 $261 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

Every day

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 $112.
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 $64Free CancellationRating
5.6
2,792 reviews
Search Frontier flights
DeltaPriceFrom $108Free CancellationRating
7.8
8,480 reviews
Search Delta flights
Allegiant AirPriceFrom $118Free CancellationRating
7.3
683 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $186Free CancellationRating
7.4
10,006 reviews
Search United Airlines flights
JetBluePriceFrom $188Free CancellationRating
7.1
3,010 reviews
Search JetBlue flights
American AirlinesPriceFrom $196Free CancellationRating
7.1
11,829 reviews
Search American Airlines flights
SouthwestPriceFrom $205Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $220Free CancellationRating
7.9
12,672 reviews
Search Alaska Airlines 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.

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