$44 Find Cheap Flights from Illinois to Arizona

1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Arizona

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Useful Info
Useful Info

Good to know

Low seasonJune
High seasonOctober
Cheapest flight$44
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly with an average 1% increase in price.
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

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 $114.

  • What is the cheapest day to fly to Arizona?

    Based on KAYAK data, the cheapest day to fly to Arizona is Wednesday where round-trip tickets can be as cheap as $303. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $398 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 $276 on average. Morning departures are around 32% 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 $363.

  • 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 $81 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 $81.

  • 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 $76 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $426 and $333 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 7h 18m, 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 (96% of total searches to Arizona). The next most popular destinations are Tucson (3%) 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 4287 reviews
7.1Food
8.0Comfort
7.6Entertainment
8.2Boarding
8.6Crew
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

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

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

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,

Tight! Seats are not designed for those of us who wear extra-large clothes.

The non-stop flight from Grand Rapids was excellent. I neither expected or needed a budget flight and Allegiant made the trip easy and for an affordable price, Arriving at the Mesa Airport (AZA) is a delight compared to the international airport. For our return flight, we were able to arrive 75 minutes before the flight, return the rental car, check our bag and make it to the gate in plenty of time. That would never happen at most airports.

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.

I miss the screens they used to have for the long flights. I use a Kendal and it doesn’t work well with there WiFi. I tried my cell and the wifi was not good for it either this is the free wifi.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

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.

Book with frontier airlines with the mentality that they'll cancel your flight, kick you off and lose your luggage. Anything besides that is a win. Compare prices with other airlines (to include luggage) and if frontier is still worth it, book it but know all of their policies.

You get what you pay for nothing essentially but a hard uncomfortable seat that doesn’t recline and kids screaming all around you and chaotic boarding and limited check bag weight allowance when compared to other airlines

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Although an hour and a half early was told by staff at check in they had overbooked and could not check us in for the flight.

The crew was delayed because they came on another flight that was delayed due to weather 10pm flight left at 1.30 am The airline made no effort to align alternate crew

Plane was down graded and I lost my uncharged exit row with more leg room. No mention or offer of refund from podium. Flight attendant was nice to explain this happens often and that I could request a refund via online form submission. I did this and have heard nothing back.

Worst airline experience. They were rude and kept changing our seats and/or giving our seats away so our family didn’t get to sit with each other. Almost everyone we dealt with at both airports with this airline was rude. The app kept giving us wrong information making things take longer. Dealing with them before TSA can take close to an hour…longer than I’ve ever had to deal with before. Never using this airline again.

Horrendous. I do not recommend Frontier. The passengers lack manners and decency, and the flight attendants lack professionalism. If I wasn’t in a bind to fly with 48 hours notice for a job interview, I would not have selected a flight with Frontier and I never plan to fly with them in the future.

Book cheap flights from Illinois to Arizona

Recent round-trip flight deals

7/8Tue
nonstopSpirit Airlines
4h 00mORD-LAS
7/8Tue
nonstopSpirit Airlines
3h 29mLAS-ORD
$93
7/8Tue
nonstopSpirit Airlines
4h 00mORD-LAS
7/9Wed
nonstopSpirit Airlines
3h 38mLAS-ORD
$94
6/27Fri
nonstopFrontier
3h 59mMDW-LAS
6/30Mon
nonstopFrontier
3h 37mLAS-MDW
$145
6/27Fri
nonstopFrontier
3h 59mMDW-LAS
6/30Mon
nonstopFrontier
3h 37mLAS-MDW
$146
9/17Wed
nonstopSouthwest
3h 45mMDW-LAS
9/19Fri
nonstopSouthwest
3h 30mLAS-MDW
$158
7/20Sun
nonstopAmerican Airlines
4h 04mORD-LAS
7/23Wed
nonstopAmerican Airlines
4h 05mLAS-ORD
$159
7/29Tue
nonstopSouthwest
3h 55mMDW-LAS
7/31Thu
nonstopSouthwest
3h 35mLAS-MDW
$159
8/13Wed
nonstopUnited Airlines
3h 48mORD-PHX
8/16Sat
nonstopUnited Airlines
3h 33mPHX-ORD
$199
10/8Wed
nonstopAmerican Airlines
3h 48mORD-PHX
10/15Wed
nonstopAmerican Airlines
3h 43mPHX-ORD
$208
8/2Sat
nonstopUnited Airlines
3h 50mORD-PHX
8/13Wed
nonstopUnited Airlines
3h 33mPHX-ORD
$218

Search by stops

Search by airline

Search by price

Recent one-way flight deals

7/9Wed
nonstopSpirit Airlines
4h 01mORD-LAS
$44
7/10Thu
nonstopSpirit Airlines
3h 58mORD-LAS
$47
10/26Sun
1 stopFrontier
7h 21mMDW-LAS
$71
8/16Sat
1 stopFrontier
6h 05mSTL-LAS
$71
9/2Tue
nonstopUnited Airlines
4h 06mORD-LAS
$80
8/17Sun
nonstopSouthwest
3h 50mMDW-LAS
$80
7/2Wed
nonstopSouthwest
3h 55mMDW-LAS
$90
9/27Sat
nonstopAmerican Airlines
3h 57mORD-LAS
$114
7/17Thu
nonstopUnited Airlines
3h 48mORD-PHX
$119
10/6Mon
nonstopAmerican Airlines
3h 23mSTL-PHX
$129

Search by stops

Search by airline

Search by price

Last minute flights from Illinois to Arizona

Last minute flight, train and bus deals

6/16Mon
nonstopSpirit Airlines
4h 04mORD-LAS
7/20Sun
nonstopSpirit Airlines
3h 29mLAS-ORD
$160
6/16Mon
nonstopFrontier
4h 14mORD-LAS
6/20Fri
nonstopFrontier
3h 56mLAS-ORD
$177
6/15Sun
nonstopAllegiant Air
3h 32mRFD-LAS
6/22Sun
nonstopAllegiant Air
3h 24mLAS-RFD
$312
6/17Tue
nonstopSouthwest
3h 55mMDW-LAS
6/24Tue
nonstopSouthwest
3h 35mLAS-MDW
$323
6/17Tue
nonstopAmerican Airlines
3h 18mSTL-PHX
7/17Thu
nonstopAmerican Airlines
3h 05mPHX-STL
$342
6/16Mon
nonstopAmerican Airlines
3h 41mORD-PHX
6/29Sun
nonstopAmerican Airlines
3h 33mPHX-ORD
$347
6/17Tue
nonstopSouthwest
3h 35mMDW-PHX
6/24Tue
nonstopSouthwest
3h 20mPHX-MDW
$363
6/17Tue
multi-stopUnited Airlines
6h 20mMLI-PHX
6/24Tue
multi-stopUnited Airlines
6h 55mPHX-MLI
$404
6/17Tue
multi-stopUnited Airlines
6h 20mMLI-PHX
6/24Tue
multi-stopUnited Airlines
13h 30mPHX-MLI
$409
6/15Sun
nonstopAllegiant Air
3h 32mRFD-LAS
6/17Tue
multi-stopAllegiant Air
23h 40mLAS-RFD
$530

Search by stops

Search by airline

Search by price

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.

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.