$37 Find Cheap Flights from Illinois to Arizona

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Low seasonJuly
High seasonApril
Cheapest flight$37
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Chicago O'Hare Airport to Las Vegas

Flights from Illinois to Arizona: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Illinois to Arizona 
JanieFlew with SWISSORD-PHXFeb 2025
I think you should prebook food or bring your own food.
Verified travelerFlew with United AirlinesORD-PHXApr 2024
Use the find my gate feature on the flights phone app if available as the airport is a bit confusing
ANAFlew with FrontierMDW-PHXMar 2024
More organization and more staff, there was a lot from diferentes cities coming at the airport, so it was a mess because people don’t understand. Or don’t want to understand the instrucción of wait in their seats…. So more staff could be helpful..

FAQs for booking flights from Illinois to Arizona

  • How does KAYAK find such low prices on flights from Illinois to Arizona?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Arizona.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Arizona?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Arizona is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Arizona?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Illinois to Arizona with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Arizona?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Illinois to Arizona up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Arizona?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Arizona is Phoenix-Mesa Gateway Airport (AZA), with an average flight price of $105.

  • What is the cheapest day to fly to Arizona?

    Based on KAYAK data, the cheapest day to fly to Arizona is Saturday where round-trip tickets can be as cheap as $292. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $388 on average.

  • What is the cheapest time of day to fly to Arizona?

    The cheapest time of day to fly to Arizona is generally in the evening, when round-trip flights cost $266 on average. Morning departures are around 31% more expensive than evening flights, on average. The most expensive time of day to fly to Arizona is generally in the morning, which is peak travel time and where the average cost of a ticket is $348.

  • What is the cheapest flight to Arizona?

    The cheapest ticket to Arizona from Illinois found in the last 72 hours was to Phoenix Sky Harbor Intl Airport, at $115 round-trip. The most popular route is Chicago Midway Airport (MDW) to Phoenix Sky Harbor Intl Airport (PHX) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $115.

  • What is the cheapest month to fly from Illinois to Arizona?

    The cheapest month for flights from Illinois to Arizona is August, when tickets cost $380 (return) on average. On the other hand, the most expensive months are July and October, when the average cost of round-trip tickets is $603 and $593 respectively.

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

    To get a below average price on the flight from Illinois to Arizona, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

  • How long is the flight to Arizona?

    An average nonstop flight from Illinois to Arizona takes 6h 58m, covering a distance of 1386 miles. The shortest route is St. Louis (STL) to Phoenix Sky Harbor Intl Airport (PHX) with an average flight time of 3h 10m.

  • What are the most popular destinations in Arizona?

    Based on KAYAK flight searches, the most popular destination is Las Vegas (95% of total searches to Arizona). The next most popular destinations are Tucson (5%) and Flagstaff (0%). Searches for flights to Yuma (0%) are also popular.

Top 5 airlines serving from Illinois to Arizona

Need help choosing which airline to fly with from Illinois to Arizona? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4294 reviews
7.6Entertainment
8.6Crew
8.2Boarding
7.1Food
8.0Comfort
Airline reviews

It is southwest seat was ok. Not the most comfortable seat

8.0 ExcellentJohn, Apr 2025PVD - FLL
Read more Southwest reviews

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

A bit rush for transit. Food and entertainment are not available

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

My flight was scheduled for about 6:05 departure. There were 11 gate changes from 4-7pm and the flight was 3 hours delayed due to operational issues. The plane taxied around the airport for about half an hour before stopping to be de-iced. It would have been nice if we were alerted of the plan to de-ice prior to the 30 minute drive around the airport. The flight attendant was friendly, which was the only redeeming thing about this flight. As a former flight attendant for United, I was extremely disappointed.

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

Our seats were all the way in back of the plane,

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence.

The flight attendants in First Class were mediocre at best. They did not take our tray away until we were about to land and only did so when I press the call button. The United person at the United Club was asked to get us our boarding pass since we missed the flight due in Chicago. She argued that we did not have seats on the flight given to us in Moline. Furthermore, she was adamant that we did not have a First Class ticket. After I spent much time with her trying to show we were correct, she reluctantly agreed. She was probably the most incompetent ticketing person I have ever met and I have traveled 3 million miles on United plus many additional miles with other carriers. United has definitely deteriorated in more than on way.

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

Easiest flights I’ve ever taken. Plane was comfortable without overly crowded seating.

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

I didn’t like it at all. I miss my second flight because of the delay on Allegiant Air now I m stuck in MCO.

Good, but a bit late on take off after loading. Don't like charging for carry ons!

First time flying with them and will definitely fly again in the future. Crew was so nice and friendly, fought was seamless. They are simple planes, no entertainment, but it’s fine for a short flight or if you have personal devices Rates are competitive, and they did so well with keeping the flight on time after a tropical storm, where other airlines had delays and cancellations.

They boarded passengers that sat in the back of the plane first, making boarding very efficient.

I didn't even take this flight. My plans changed and I couldn't get ahold of customer service and the website kept breaking down during the attempt to change the flight. I wound up taking another airline entirely and eating the cost.

The worst flying experience ever 3 delays. No accommodations. Had to deboard the plane after being delayed.

Posted a 20minute delay but didn’t delay at all. Caused boarding issues and confusion. Also, didn’t release baggage. Took over an hour and 20 minutes to get luggage.

Flight was good, boarding was a breeze, flight attendants were friendly and professional. There was a medical issue with another passenger and the crew handled it in a calm and professional way.

Took off on time and successfully avoided weather that looked to be a problem along the way

Very friendly and efficient and smooth boarding. We were even way early arriving at my destination. Thank you.

The trip was very smooth and they provided great customer service

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

The seats were crammed and the guy in front of me wouldn't stop reclining. If AA is cramming extra rows in, they need to take away the reclining in coach. My knees were smashed for 4 1/2 hours and I was very close to confronting the passenger in front of me.

What, first class and not even a cup of coffee before landing at 5 am in First Class? Really?

I paid for what I got which was cheap, I brought my own entertainment. I knew what to expect, so I could be prepared. If you’re flying economy, check in early like me. I have no problems with my flight, was on time, staff were friendly, and overall good experience.

Customer service in first class does not exist on American Airlines

Flight was delayed due to a steering issue with plane. The delay caused me to miss the connecting flight. The delay caused me to spend an extra 21 hours in airports and flights to get to my destination. The plane issue obviously should have been found and fixed before we even boarded. Ridiculous.

The reps working at the airport counter were dumber than a second coat of paint.

My costume jewelry was stolen out of my bag. Got to airport and my bag weighed 45 pounds- 5 pounds over cost me $100 Long lines in tier one. No entertainment No WiFi no free drinks or snacks

Not very good. Paid in excess of $400 for assigned seating for my family and that was not provided. I want that money back.

The seats were hard molded plastic covered in plastic vinyl. And the scam to charge people extra to sit together. Don’t they know we can just ask someone to trade seats. And watching the staff separate young children from parents… super classy. We had to guilt them into offering up our seats. This companies policies suck. Don’t give them your money.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

I’ve never traveled on Frontier before. If you want basic, no frills, friendly service at great prices then give them a fly!

Cancelled and declined to find alternatives Earlier flight is 2 days later Sent the cancellation notification very late, wish I knew earlier would have stayed to watch the Miami open final game Very disappointing service

The worst flight of my life. Never will I fly frontier again

Book cheap flights from Illinois to Arizona

Recent round-trip flight deals

6/1Sun
nonstopFrontier
4h 14mORD-LAS
6/6Fri
nonstopFrontier
3h 56mLAS-ORD
$78
5/28Wed
nonstopSpirit Airlines
4h 01mORD-LAS
5/30Fri
nonstopSpirit Airlines
3h 39mLAS-ORD
$82
5/18Sun
nonstopAllegiant Air
3h 41mRFD-LAS
5/22Thu
nonstopAllegiant Air
3h 23mLAS-RFD
$111
5/11Sun
nonstopAllegiant Air
3h 41mRFD-LAS
5/15Thu
nonstopAllegiant Air
3h 23mLAS-RFD
$134
6/2Mon
nonstopSouthwest
4h 00mMDW-LAS
6/4Wed
nonstopSouthwest
3h 30mLAS-MDW
$209
5/28Wed
nonstopSouthwest
4h 00mMDW-LAS
5/30Fri
nonstopSouthwest
3h 35mLAS-MDW
$219
5/20Tue
nonstopAmerican Airlines
3h 52mORD-PHX
5/27Tue
nonstopAmerican Airlines
3h 28mPHX-ORD
$224
6/4Wed
nonstopAmerican Airlines
3h 54mORD-PHX
6/11Wed
nonstopAmerican Airlines
3h 40mPHX-ORD
$227
5/25Sun
nonstopUnited Airlines
3h 50mORD-PHX
5/28Wed
nonstopUnited Airlines
3h 41mPHX-ORD
$241
5/25Sun
1 stopUnited Airlines
5h 39mORD-PHX
5/28Wed
nonstopUnited Airlines
3h 33mPHX-ORD
$251

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Recent one-way flight deals

5/30Fri
nonstopFrontier
4h 22mORD-LAS
$37
5/29Thu
nonstopFrontier
4h 06mORD-LAS
$38
5/18Sun
nonstopAllegiant Air
3h 41mRFD-LAS
$62
5/18Sun
nonstopAllegiant Air
3h 41mRFD-LAS
$70
7/15Tue
nonstopUnited Airlines
4h 03mORD-LAS
$105
6/14Sat
nonstopSouthwest
3h 55mMDW-LAS
$105
5/27Tue
nonstopSouthwest
4h 00mMDW-LAS
$115
5/25Sun
nonstopAmerican Airlines
3h 54mORD-PHX
$117
5/14Wed
nonstopAmerican Airlines
3h 52mORD-PHX
$125
7/20Sun
nonstopUnited Airlines
3h 50mORD-PHX
$129

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Last minute flights from Illinois to Arizona

Last minute flight, train and bus deals

5/5Mon
nonstopFrontier
3h 46mSTL-LAS
5/9Fri
nonstopFrontier
3h 26mLAS-STL
$159
5/5Mon
nonstopFrontier
3h 46mSTL-LAS
5/6Tue
multi-stopFrontier
22h 15mLAS-STL
$177
5/4Sun
nonstopAllegiant Air
3h 41mRFD-LAS
5/8Thu
nonstopAllegiant Air
3h 27mLAS-RFD
$184
5/4Sun
nonstopAllegiant Air
3h 41mRFD-LAS
5/8Thu
nonstopAllegiant Air
3h 27mLAS-RFD
$210
5/5Mon
nonstopAmerican Airlines
3h 24mSTL-PHX
5/9Fri
nonstopAmerican Airlines
2h 57mPHX-STL
$343
5/5Mon
nonstopAmerican Airlines
3h 24mSTL-PHX
5/9Fri
multi-stopAmerican Airlines
5h 53mPHX-STL
$353
5/5Mon
multi-stopUnited Airlines
9h 25mSTL-PHX
5/9Fri
multi-stopUnited Airlines
6h 29mPHX-STL
$448
5/5Mon
multi-stopUnited Airlines
8h 17mSTL-PHX
5/9Fri
multi-stopUnited Airlines
8h 25mPHX-STL
$453
5/3Sat
nonstopSouthwest
3h 55mMDW-LAS
6/1Sun
nonstopSouthwest
3h 35mLAS-MDW
$602
5/3Sat
nonstopSouthwest
3h 45mMDW-PHX
5/6Tue
nonstopSouthwest
3h 20mPHX-MDW
$622

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Everything you need to know for your flight to Arizona

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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