$57 Find Cheap Flights from Illinois to Arizona - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Illinois to Arizona departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Useful Info

Good to know

Low season

July

Cheapest flight

$57
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from St. Louis to Phoenix Sky Harbor Airport

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 SWISS-Feb 2025
I think you should prebook food or bring your own food.
Verified travelerFlew with United Airlines-Apr 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 airlines fly most frequently to Arizona?

    Illinois and Arizona are connected by different airlines. The airlines that fly that route the most regularly are American Airlines (101 flights per week), United Airlines (65 flights per week), and Aer Lingus (63 flights per week).

  • How many airports are there in Arizona?

    There are 10 airports in Arizona. The busiest airport is Phoenix Sky Harbor Airport (PHX), with 84% of all flights arriving there.

  • 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 $155.

  • 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 $297. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $360 on average.

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

    The cheapest time of day to fly to Arizona is generally at night, when round-trip flights cost $322 on average. Morning departures are around 7% cheaper than evening flights, on average. The most expensive time of day to fly to Arizona is generally in the evening, which is peak travel time and where the average cost of a ticket is $346.

  • What is the cheapest flight to Arizona?

    The cheapest ticket to Arizona from Illinois found in the last 5 days was to Phoenix-Mesa Gateway Airport, at $108 round-trip. The most popular route is Bloomington (BMI) to Phoenix-Mesa Gateway Airport (AZA) and the cheapest round-trip airline ticket found on this route in the last 5 days was $108.

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

    The cheapest month for flights from Illinois to Arizona is September, when tickets cost $167 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $224 and $218 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 4 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

  • How many cities have direct flights to Arizona?

    From Illinois, there are direct flights to Arizona from 3 cities. The city with the most direct flights is Chicago, with 595 direct flights each week.

  • How many direct flights to Arizona are there each day?

    There are around 86 direct flights from within Illinois to Arizona every day. Most flights (42%) depart in the evening.

  • How many direct flights to Arizona are there each week?

    Each week there are around 601 direct flights from within Illinois to Arizona. The most common day for departures is Sunday, with 16% of flights taking off on this day.

  • How long is the flight to Arizona?

    An average nonstop flight from Illinois to Arizona takes 7h 04m, 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.

  • How many long-haul flights are there to Arizona each week?

    Each week, there are 20 medium-haul flights (3-6 hour flight duration) and 581 short-haul flights (up to 3 hour flight duration) to Arizona. There aren't any long-haul flights (6-12 hour flight duration).

  • 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 (4%) and Flagstaff (0%).

Reviews of the 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 4218 reviews
8.0Comfort
8.1Boarding
7.5Entertainment
8.6Crew
7.0Food
Airline reviews

Flight left on time. Seat spacing is way too small…

8.0 ExcellentLeo, Aug 2026
Read more Southwest reviews

Flight left on time. Seat spacing is way too small…

I think Southwest is the number one airline that anyone can fly I have flown for the first time Frontier and what a joke and their customer service United was a very strange experience I'm only sticking to Southwest from here on out for sure

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Great flight from Seattle to Phoenix and to Chicago-Midway from Phoenix

It was good from LAX to Phoenix, But the connection in Phoenix to Tulsa was not that great. The staff on both flights were great. The choice of free entertainment was ok nothing to brag about. The 45 min delay because of some electrical issue wasn't great from Phoenix to Tulsa. We sat there with hardly any air, The seat I had was between windows so the side of the plane pushed in on you. My being a bigger man it then made the seating area uncomfortable. The seats on the plane had no power to connect to recharge your phone or anything. I would recommend that they should look into a slot or clamp to hold your phone to enjoy while watching the entertainment choices hands-free. Also make it possible to raise the inner seat by the window be able to raise the arm rest up to make more room for larger people to set more comfortably. I would also say other then that stop price gouging the airfare or nickel and diming everything. Not fair for people having to fly for emergencies and be paying for higher prices due to the season or holidays. Your making your money either way and the cost of flying is still going to be the same regardless if there's 100 people or 200 people.

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

Flight was delayed but they still boarded us early knowing we were delayed. Were not able to move about the plane the majority of the flight.

I liked the snacks and the flight attendants were friendly.

Other than a way way too cold cabinets for the entire flight, all was great

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

Absolute disaster. Rude, uncooperative staff. Staff ignores and pretends you don’t exist when you are asking them a question. Erroneous departure gate and baggage claim information. Equipment not working for purchase of drinks. Overly expensive baggage check-in fees. Overly crowded. Dirty airplane. Passengers coughing incessantly as if they were being gassed. Circled airport in flight several times and waited on the tarmac for 1.5 hours. The worst experience ever. Consider another industry. The travel industry is not for you.

The flight was mostly on time, smooth and deplaning was quick. Baggage was really quick at the claim. Comfort was so-so and I paid for economy plus. It was still too crowded and why was a family of 5 scattered all around the plane?

Original plane sidelined. Had to wait an hour for replacement.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

The flight experience was very good! Especially the United Club!

The flight from Ottawa to Chicago took a lot longer due to DC in Ottawa. We got to Chicago and went to our gate to catch our flight. We only had nine minutes I found that very stressful.

Boarding crew at the gate were hilarious and made boarding run.

It was poor a four hour delay and no explanation for the delay. What’s a 35 dollars going to do. It also made me miss my car rental,

It was on time. Flight was comfortable. Staff was nice. It was the way a flight should always be.

I love how they show love to their customers and care about them too.

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

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.

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.

I love that I can fly straight to Phoenix/Mesa on Allegiant without any layovers! I bundled my flight to include a couple of different perks, one being I got to pick my seat. I initially picked my seat, and then a week before I flew out, I got a notification I had to pick my seat again, which I did. When I got to the airport, I realized I still didn't have a seat assignment and needed to have the gate agent assign me a seat. What was the purpose of bundling if in the end, I didn't get to pick my seat? Also, bundling didn't include a carry-on so I ended up having to pay $33 extra for that so what would have been a $59 flight ended up being almost $180.

The seats on allegiant airline planes are very basic and don’t have much comfort. After only an hour of flying my butt was hurting a decent amount. But other than that, the crew was definitely entertaining and the flight was very smooth with take off and landing.

We had a 4-hour delay due to a maintenance issue. We boarded, deplaned, then boarded again.

I went to lower my tray table and it was very nasty. Looks like some one had left some food on it and then just closed it up.

I was so hungry. No meals. Staff very nice. Seat arms armed too tight and didn’t go up. I was scheduled for First class, but was put on Standby, even though I made my reservation a while ago. Thank you.

Everything was done like clockwork and I find no fault with the airline.

American was the airline that Starlux contracted for this trip. I arrived in time to make the connecting flight on American, and then the baggage-handler debacle happened. For some reason, the first class and premium economy passengers' luggage was unloaded first. Never seen this happen before. They had handlers removing the bags from the carousel for those passengers. Meanwhile, all of the economy passengers were waiting for their bags, including me. And there were a lot of bags because it was an international flight packed full. While waiting for 45 minutes, my bag didn't show. Meanwhile, an American representative showed up asking if anyone has a connecting flight to Phoenix. Of course I spoke up, and they proceeded to try to find my bag because I had to take a bus to the actual terminal to catch my flight. Which I was not informed of before I arrived. After another 15 minutes of searching, my bag was finally found with the first-class passengers' bags because they had pulled it by mistake. So I rushed to the terminal with the American representative to catch my flight, and they informed me that I missed it and could not get another flight until the next day. Of course, after being on an international flight for 18 hours, I was in no mood to hear this. Now, to be fair, there were a few American employees who tried to help me. After hearing about the missed flight, they got a supervisor to talk to. I expressed my situation to the supervisor, and she was not helpful until I asked for compensation. She agreed to get me a hotel room for the night. So I agreed, and she disappeared into her office, and I waited. And waited. And waited. And waited. While waiting, I was asked by three different employees who knew of my situation if I had been helped. I told them I was waiting for the supervisor to get the hotel room, and they said they would check. Finally, after waiting for 75 minutes, one of the employees who had asked me if I had been helped arrived with my hotel room and arranged a ride to the hotel for me. Never saw the supervisor again. It was now 8 o'clock; I arrived at 5:45! My rebooked fight was scheduled for 6:11 this morning and I have now been informed it has been delayed until 10:00. So am I happy with American? NO I'M NOT!! ;

It was good overall but when I book my flight and seat through Kayak, AA will at times change those seats during check-in time which I don’t understand why. I always book aisle seats and had to sit at window for my flight to Austin this trip.

I was very unhappy with the lack of communication from the cockpit. It took close to a half an hour before we took off after the doors were closed, and we got no announcements as to progress. It would be nice to get some acknowledgement of the situation and updates as to when we are taking off.

American Airlines is a great dependable airline, on time arrival and departure with polite crew and staff.

Original flight was on time, then late, then changed gates...4 times. Once our newest plane came in, it was fine.

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Excellent- plan was barely populated. I cannot remember a flight where I was able/encouraged to stretch out!

Regarding the boarding: it needs more efforts to make it more convenient

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They switched our terminal 3 times and we were delayed for four plus hours!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Flight was delayed one hour. Notification to the crowd waiting near the gate was terrible…announcements were unclear and very hard to hear and therefore understand. Frontier does NOT send texts to notify, only email. The reader board over the gate itself was NEVER updated to indicate the gate had been changed. It’s like a bunch of children are running things.

We’ve all seen the YouTube vids of out of control passengers. But this was an instance of a highly aggressive, bully flight attendant. Yelling in the face of a vet with PTSD who was texting their family. And no , we had not yet been instructed to put our phones in airplane mode. My suggestion is that you should pay whatever difference there is in order to avoid Frontier airlines. Additionally, after 3hrs trying to get customer service frontier offered a $25 voucher. I declined. This experience was so traumatic. To be verbally assaulted and abused by a flight attendant that has the power to say “boo” and I miss my flight ( which was to a family member’s funeral ). Frontier is unsafe and I cannot impress enough how much I discourage anyone ( esp those with any kind of disability like PTSD ) flying on Frontier.

Was just ok with over selling I guess. A lot of people in a short space and when we finally arrive i20 minutes, waiting to get out from the plain because we were waiting authorization for out boarding? Something like that.

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.