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Cheap flights from Phoenix Sky Harbor Intl Airport to Illinois from $102

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Phoenix Sky Harbor Intl Airport to Illinois departing on 6/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Phoenix Sky Harbor Intl Airport to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:04 pm - 12:33 am
PHX
-
ORD
3h 29mnonstop
Frontier Logo
2:46 pm - 8:54 pm
ORD
-
PHX
8h 08m
1 stop
$200Frontier
Mon, Oct 12 - Wed, Oct 14
Frontier Logo
2:00 pm - 6:05 pm
PHX
-
STL
26h 05m
1 stop
Frontier Logo
7:03 pm - 10:57 pm
STL
-
PHX
5h 54m
1 stop
$200Frontier
Tue, Jul 7 - Wed, Jul 29
Frontier Logo
12:47 pm - 9:35 pm
PHX
-
ORD
6h 48m
1 stop
Frontier Logo
4:00 pm - 5:59 pm
ORD
-
PHX
3h 59mnonstop
$201Frontier
Tue, Sep 29 - Mon, Oct 12
Southwest Logo
6:50 pm - 12:05 am
PHX
-
MDW
3h 15mnonstop
Southwest Logo
8:50 pm - 10:30 pm
MDW
-
PHX
3h 40mnonstop
$255Southwest
Sat, Jun 20 - Sat, Jun 27
American Airlines Logo
5:00 am - 3:50 pm
PHX
-
MLI
8h 50m
1 stop
American Airlines Logo
6:50 pm - 12:14 am
MLI
-
PHX
7h 24m
1 stop
$299American Airlines
Sat, Jul 4 - Wed, Jul 8
American Airlines Logo
6:10 am - 4:08 pm
PHX
-
MLI
7h 58m
1 stop
American Airlines Logo
6:50 pm - 12:14 am
MLI
-
PHX
7h 24m
1 stop
$314American Airlines
Fri, Jul 3 - Mon, Jul 13
United Airlines Logo
2:40 pm - 11:16 pm
PHX
-
MLI
6h 36m
1 stop
United Airlines Logo
1:15 pm - 5:53 pm
MLI
-
PHX
6h 38m
1 stop
$329United Airlines
Sat, Jun 6 - Tue, Jun 9
Delta Logo
1:05 pm - 10:23 pm
PHX
-
BMI
8h 18m
1 stop
Delta Logo
12:00 pm - 6:36 pm
BMI
-
PHX
7h 36m
1 stop
$329Delta
Fri, Nov 6 - Fri, Nov 13
United Airlines Logo
8:50 pm - 8:57 am
PHX
-
BMI
11h 07m
2 stops
United Airlines Logo
1:32 pm - 6:55 pm
BMI
-
PHX
6h 23m
1 stop
$334United Airlines
Fri, Nov 6 - Fri, Nov 13
Delta Logo
11:55 pm - 11:11 am
PHX
-
BMI
9h 16m
1 stop
Delta Logo
4:00 pm - 10:47 pm
BMI
-
PHX
8h 47m
1 stop
$354Delta
Fri, Sep 4 - Tue, Sep 8

Frontier flights from Phoenix Sky Harbor Intl Airport to Illinois

Our best Frontier deals on Phoenix Sky Harbor Intl Airport to Illinois flight tickets
Frontier
Oct 12
PHX7:04 pmPhoenix Sky Harbor Intl
3h 29m
ORD12:33 amChicago O'Hare Intl
Oct 14
ORD2:46 pmChicago O'Hare Intl
8h 08m
1 stop
PHX8:54 pmPhoenix Sky Harbor Intl
$200
Frontier
Sep 29
PHX12:47 pmPhoenix Sky Harbor Intl
6h 48m
1 stop
ORD9:35 pmChicago O'Hare Intl
Oct 12
ORD4:00 pmChicago O'Hare Intl
3h 59m
PHX5:59 pmPhoenix Sky Harbor Intl
$201
Frontier
Oct 12
PHX7:04 pmPhoenix Sky Harbor Intl
3h 29m
ORD12:33 amChicago O'Hare Intl
Oct 13
ORD2:46 pmChicago O'Hare Intl
8h 08m
1 stop
PHX8:54 pmPhoenix Sky Harbor Intl
$202

Alaska Airlines flights from Phoenix Sky Harbor Intl Airport to Illinois

Our best Alaska Airlines deals on Phoenix Sky Harbor Intl Airport to Illinois flight tickets
Alaska Airlines
Jun 17
PHX1:05 pmPhoenix Sky Harbor Intl
8h 31m
1 stop
ORD11:36 pmChicago O'Hare Intl
Jun 24
ORD6:20 amChicago O'Hare Intl
8h 03m
1 stop
PHX12:23 pmPhoenix Sky Harbor Intl
$238
Alaska Airlines
Oct 27
PHX10:12 amPhoenix Sky Harbor Intl
10h 54m
2 stops
MLI11:06 pmMoline Quad-City
Oct 31
MLI11:33 amMoline Quad-City
11h 08m
2 stops
PHX8:41 pmPhoenix Sky Harbor Intl
$399
Alaska Airlines
May 28
PHX7:20 amPhoenix Sky Harbor Intl
14h 35m
2 stops
MLI11:55 pmMoline Quad-City
Jun 9
MLI11:11 amMoline Quad-City
9h 59m
2 stops
PHX7:10 pmPhoenix Sky Harbor Intl
$539

momondo Fare Finder

 
Customize your flight search to find flights from Phoenix Sky Harbor Intl Airport to Illinois 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 May 19, 2026.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Mon 10/12

7:04 pm-12:33 am

Nonstop3h 29m

Chicago O'Hare Intl

Wed 10/14

2:46 pm-8:54 pm

1 stop8h 08m

$200

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Tue 7/7

2:00 pm-6:05 pm

1 stop26h 05m

Lambert-St Louis

Wed 7/29

7:03 pm-10:57 pm

1 stop5h 54m

$200

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Tue 9/29

12:47 pm-9:35 pm

1 stop6h 48m

Chicago O'Hare Intl

Mon 10/12

4:00 pm-5:59 pm

Nonstop3h 59m

$201
Quickest round-trip

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

Sat 6/20

6:50 pm-12:05 am

Nonstop3h 15m

Chicago Midway

Sat 6/27

8:50 pm-10:30 pm

Nonstop3h 40m

$255

PhoenixMoline

PHX - MLI

PHXMLI

Phoenix Sky Harbor Intl

Sat 7/4

5:00 am-3:50 pm

1 stop8h 50m

Moline Quad-City

Wed 7/8

6:50 pm-12:14 am

1 stop7h 24m

$299

PhoenixMoline

PHX - MLI

PHXMLI

Phoenix Sky Harbor Intl

Fri 7/3

6:10 am-4:08 pm

1 stop7h 58m

Moline Quad-City

Mon 7/13

6:50 pm-12:14 am

1 stop7h 24m

$314

PhoenixMoline

PHX - MLI

PHXMLI

Phoenix Sky Harbor Intl

Sat 6/6

2:40 pm-11:16 pm

1 stop6h 36m

Moline Quad-City

Tue 6/9

1:15 pm-5:53 pm

1 stop6h 38m

$329

PhoenixBloomington

PHX - BMI

PHXBMI

Phoenix Sky Harbor Intl

Fri 11/6

1:05 pm-10:23 pm

1 stop8h 18m

Bloomington-Normal

Fri 11/13

12:00 pm-6:36 pm

1 stop7h 36m

$329

PhoenixBloomington

PHX - BMI

PHXBMI

Phoenix Sky Harbor Intl

Fri 11/6

8:50 pm-8:57 am

2 stops11h 07m

Bloomington-Normal

Fri 11/13

1:32 pm-6:55 pm

1 stop6h 23m

$334

PhoenixBloomington

PHX - BMI

PHXBMI

Phoenix Sky Harbor Intl

Fri 9/4

11:55 pm-11:11 am

1 stop9h 16m

Bloomington-Normal

Tue 9/8

4:00 pm-10:47 pm

1 stop8h 47m

$354

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 Illinois from

How to get the cheapest flight ticket from Phoenix Sky Harbor Intl Airport to Illinois

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 Illinois?

The cheapest month to fly to Illinois from Phoenix Sky Harbor Intl Airport is in September. Flight prices, which tend to average around $267, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $287.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Phoenix Sky Harbor Intl Airport to Illinois is on a Thursday when prices can be found for as low as $345. Flights from Phoenix Sky Harbor Intl Airport to Illinois on a Sunday will generally be more expensive and average around $511. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Phoenix Sky Harbor Intl Airport to Illinois during this time can be as low as $311. Flights in the morning are often more expensive with an average ticket price of $424.

What is the cheapest Phoenix Sky Harbor Intl to Illinois flight route?

Fly from Phoenix Sky Harbor Intl to Chicago Midway for the best Phoenix Sky Harbor Intl - Illinois flight prices

How far in advance should I book a flight from Phoenix Sky Harbor Intl Airport to Illinois?

You are more likely to see cheaper flights to Illinois from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $278 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Phoenix Sky Harbor Intl Airport for as low as $234 on momondo.

Can stopping save me money on Phoenix Sky Harbor Intl Airport to Illinois flights?

You could potentially save up to 10% on your flight if you consider stops on a Phoenix Sky Harbor Intl Airport to Illinois flight.

Cheap Phoenix Sky Harbor Intl Airport to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Phoenix Sky Harbor Intl Airport to Illinois

Best Price Found

$162

Fastest flight time

2h 55m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Phoenix Sky Harbor Intl Airport in the past 72 hours is $162. The best round-trip flight deal from Phoenix Sky Harbor Intl Airport to Illinois found on momondo in the last 72 hours is $308.
The fastest flight from Phoenix Sky Harbor Intl Airport to Illinois takes 2h 55m
Direct flights go from Phoenix Sky Harbor Intl Airport to Illinois every day.
There are 98 airports in Illinois. From Phoenix Sky Harbor Intl Airport there are direct flights to Chicago Midway (MDW), Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Phoenix Sky Harbor Intl Airport to Illinois

  • When did momondo last update prices for flights from Phoenix Sky Harbor Intl Airport to Illinois?

    Prices for flights from Phoenix Sky Harbor Intl Airport to Illinois refresh daily.

  • How many operators does momondo search for flights from Phoenix Sky Harbor Intl Airport to Illinois?

  • How old do you have to be to fly from Phoenix Sky Harbor Intl Airport to Illinois?

    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 Phoenix Sky Harbor Intl Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Phoenix Sky Harbor Intl Airport to Illinois?

Best airlines flying from Phoenix Sky Harbor Intl Airport to Illinois

Compare and see reviews for airlines that fly from Phoenix Sky Harbor Intl Airport to Illinois with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $64Free CancellationRating
5.6
2,945 reviews
Search Frontier flights
JetBluePriceFrom $158Free CancellationRating
7.2
2,983 reviews
Search JetBlue flights
SouthwestPriceFrom $187Free CancellationRating
7.9
4,284 reviews
Search Southwest flights
United AirlinesPriceFrom $189Free CancellationRating
7.4
9,731 reviews
Search United Airlines flights
American AirlinesPriceFrom $198Free CancellationRating
7.1
11,647 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $210Free CancellationRating
7.9
12,379 reviews
Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Phoenix to Illinois?

It is quick and easy to find Phoenix to Illinois 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 Illinois that suits you.

Can I find flights from Phoenix to Illinois with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Illinois from Phoenix with this policy.

How can momondo help me find flights from Phoenix to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Phoenix.

I’m not ready to book a flight from Phoenix to Illinois right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Phoenix to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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