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Illinois

$36+ Cheap flights from Alabama to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
BHM — ORD
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
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Cheap flight deals from Alabama to Illinois

Keep the following information in mind while searching for Alabama to Illinois flight deals. Data was last updated October 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$79
(Frontier)

One-way from

$36
(Priceline)

Popular in

March

Cheapest in

October

Average price

$315

Good round-trip deal

$281 or less

Good one-way deal

$135 or less
Provider with most accurate pricing for Birmingham-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Birmingham-Chicago (CHI) flights.
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From Alabama to Illinois
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One-way flight from Alabama to Illinois
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Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Alabama to Illinois.
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Price to beat on a one-way flight from Alabama to Illinois.
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Find flight deals from Alabama to Illinois

Cheapest flights from Alabama to Illinois
Explore the most affordable flight options available from Alabama to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2025.

This Frontier deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/189:44 pmATL - MDW
Nonstop2h 03mFrontier
Wed 10/228:05 amMDW - ATL
Nonstop2h 08mFrontier
Deal found 9/30$79
This CheapOair deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1810:17 pmATL - ORD
Nonstop2h 12mFrontier
Tue 10/213:12 pmORD - ATL
Nonstop2h 15mFrontier
Deal found 9/30$79
This Cheapflightsfares deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2212:40 pmATL - MDW
Nonstop1h 58mFrontier
Mon 10/2712:03 pmMDW - ATL
Nonstop2h 02mFrontier
Deal found 10/2$80
This Cheapflightsfares deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:27 pmATL - ORD
Nonstop2h 12mFrontier
Thu 11/63:18 pmORD - ATL
Nonstop2h 14mFrontier
Deal found 9/30$80
This Cheapflightsfares deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:00 pmATL - MDW
Nonstop2h 03mFrontier
Sat 11/86:15 amMDW - ATL
Nonstop2h 14mFrontier
Deal found 9/30$81
This Cheapflightsfares deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:27 pmATL - ORD
Nonstop2h 12mFrontier
Sun 11/25:11 amORD - ATL
Nonstop2h 05mFrontier
Deal found 9/30$81
This Cheapflightsfares deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:18 pmATL - MDW
Nonstop2h 03mFrontier
Mon 10/276:15 amMDW - ATL
Nonstop2h 14mFrontier
Deal found 9/30$82
This Cheapflightsfares deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/239:26 amATL - ORD
Nonstop2h 15mFrontier
Mon 10/275:50 pmORD - ATL
Nonstop2h 15mFrontier
Deal found 9/30$82
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2410:46 pmATL - MDW
Nonstop2h 00mFrontier
Tue 10/281:56 pmMDW - ATL
Nonstop1h 58mFrontier
Deal found 10/1$83
This Mytrip deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:17 pmATL - ORD
Nonstop2h 12mFrontier
Mon 10/2712:23 pmORD - ATL
Nonstop2h 04mFrontier
Deal found 9/30$83
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:59 pmATL - ORD
Nonstop2h 12mFrontier
Wed 11/1912:37 pmORD - ATL
Nonstop2h 04mFrontier
Deal found 10/1$84
This Frontier deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1210:00 amATL - ORD
Nonstop2h 14mFrontier
Fri 11/216:35 pmORD - ATL
Nonstop2h 25mFrontier
Deal found 10/1$85

Cheapflights Fare Finder

 
Customize your flight search to find flights from Alabama 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, Cheapflights users made 2,558,603 searches. Data last updated October 2, 2025.
Use the filters below to find and compare flights from Alabama to Illinois that are best for you.

Fly from

Alabama

Fly to

Illinois

Route

Depart

Return

Price

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Thu 11/20

10:16 am-11:34 am

Nonstop2h 18m

Chicago O'Hare Intl

Mon 12/1

6:00 am-9:16 am

Nonstop2h 16m

$90

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Tue 11/4

10:00 am-11:14 am

Nonstop2h 14m

Chicago O'Hare Intl

Thu 11/6

1:36 pm-9:15 pm

1 stop6h 39m

$108

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 11/7

3:12 pm-4:01 pm

Nonstop1h 49m

Lambert-St Louis

Sun 11/9

5:12 pm-12:11 am

1 stop5h 59m

$120

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Wed 10/15

7:30 am-9:07 am

1 stop26h 37m

Lambert-St Louis

Sat 10/18

4:33 pm-12:18 am

1 stop6h 45m

$145

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Tue 10/28

8:10 am-9:24 am

Nonstop2h 14m

Chicago O'Hare Intl

Tue 11/4

6:20 pm-9:33 pm

Nonstop2h 13m

$148

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 11/6

7:30 am-9:07 am

1 stop26h 37m

Lambert-St Louis

Sun 11/9

5:12 pm-12:11 am

1 stop5h 59m

$155

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sat 10/25

8:00 am-3:38 pm

1 stop8h 38m

Lambert-St Louis

Sat 10/25

7:52 pm-6:02 am

1 stop9h 10m

$157

AtlantaChicago

ATL - MDW

ATLMDW

Atlanta Hartsfield-Jackson

Fri 12/5

3:55 pm-4:50 pm

Nonstop1h 55m

Chicago Midway

Sun 12/7

9:55 am-12:55 pm

Nonstop2h 00m

$177

AtlantaChicago

ATL - MDW

ATLMDW

Atlanta Hartsfield-Jackson

Thu 12/4

3:55 pm-4:50 pm

Nonstop1h 55m

Chicago Midway

Sun 12/7

7:55 am-10:50 am

Nonstop1h 55m

$177

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sat 10/18

10:49 am-3:38 pm

1 stop5h 49m

Lambert-St Louis

Sun 10/19

11:32 am-2:12 pm

Nonstop1h 40m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/29

Showing 1-10 of 60 results
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Best time to book a flight from Alabama to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Alabama with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Alabama to Illinois

What is the cheapest month to book a flight from Alabama to Illinois?

Currently, August is the cheapest month in which you can book a flight from Alabama to Illinois (average of $245). Flying from Alabama to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from AL to IL?

Find hourly flight availability from Alabama to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 2, 2025.

When flying from Alabama to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Alabama to Illinois

Explore weekly flight availability from Alabama to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 2, 2025.

The most flights from USAL to USIL are scheduled on a Thursday (21 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated October 2, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Alabama to Illinois to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,962 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,933 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,033 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Allegiant Air
7.2
Good
698 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Alabama to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Alabama to Illinois?

    Airlines like Frontier, United Airlines, and Southwest fly from Alabama to Illinois in about 1h 55m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 591 mi. Most flights are nonstop.

  • What are the cheapest airlines to fly from Alabama to Illinois one-way?

    The cheapest airlines for a one-way flight from Alabama to Illinois are Southwest ($69), United Airlines ($69), and Frontier ($72).

  • Can I find deals for flights from Alabama to Illinois that include hotel bookings?

    Yes. In addition to deals on Alabama to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Alabama to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Alabama to Illinois.

  • Can I find deals for business class flights from Alabama to Illinois?

    Yes. Cheapflights offers flight deals from Alabama to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Alabama to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Alabama to Illinois (average of $245). Flying from Alabama to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Alabama to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Alabama to Illinois

Discover the top 5 airlines that operate flights from Alabama to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$82Average$132FlexibilityNo cancel feeOn-time88%
DeltaCheapest$131Average$451FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$148Average$359FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$185Average$354FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$260Average$385FlexibilityNo cancel feeOn-time63%

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