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$149+ Cheap flights from Waterloo, IA (ALO) 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
ALO — ORD
Jun 9 — Jun 161
Tue 6/9
Tue 6/16
1 adult, Economy
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Cheap flight deals from Waterloo to Illinois

Cheapest flights from Waterloo to Illinois
Explore the most affordable flight options available from Waterloo to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 10, 2026.

This American Airlines deal was found by Cheapflights users on 5/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:00 am
ALO
-
ORD
Nonstop1h 22m
American Airlines
Wed 6/2411:00 pm
ORD
-
ALO
Nonstop1h 21m
American Airlines
Deal found 5/5$204
This American Airlines deal was found by Cheapflights users on 5/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:00 am
ALO
-
ORD
Nonstop1h 22m
American Airlines
Sun 8/231:25 pm
ORD
-
ALO
Nonstop1h 21m
American Airlines
Deal found 5/8$224
This American Airlines deal was found by Cheapflights users on 5/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/165:40 am
ALO
-
ORD
Nonstop1h 35m
American Airlines
Sat 5/2310:47 pm
ORD
-
ALO
Nonstop1h 22m
American Airlines
Deal found 5/7$274
This American Airlines deal was found by Cheapflights users on 5/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/25:06 am
ALO
-
ORD
Nonstop1h 24m
American Airlines
Tue 8/411:07 pm
ORD
-
ALO
Nonstop1h 22m
American Airlines
Deal found 5/6$293
This American Airlines deal was found by Cheapflights users on 5/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/85:40 am
ALO
-
ORD
Nonstop1h 35m
American Airlines
Sat 5/910:33 pm
ORD
-
ALO
Nonstop1h 22m
American Airlines
Deal found 5/7$304
This American Airlines deal was found by Cheapflights users on 5/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:00 am
ALO
-
STL
1 stop32h 15m
American Airlines
Wed 5/279:08 am
STL
-
ALO
1 stop29h 24m
American Airlines
Deal found 5/8$529
This American Airlines deal was found by Cheapflights users on 5/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/243:02 pm
ALO
-
STL
1 stop4h 18m
American Airlines
Thu 5/289:08 am
STL
-
ALO
1 stop5h 24m
American Airlines
Deal found 5/9$546
This American Airlines deal was found by Cheapflights users on 5/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:40 am
ALO
-
ORD
Nonstop1h 35m
American Airlines
Wed 5/1310:33 pm
ORD
-
ALO
Nonstop1h 22m
American Airlines
Deal found 5/6$593
This American Airlines deal was found by Cheapflights users on 5/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/182:23 pm
ALO
-
STL
1 stop5h 10m
American Airlines
Tue 5/198:55 am
STL
-
ALO
1 stop4h 58m
American Airlines
Deal found 5/8$810

Find flight deals from Waterloo to Illinois

Keep the following information in mind while searching for Waterloo to Illinois flight deals. Data was last updated May 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$204
(American Airlines)

One-way from

$149
(American Airlines)

Good round-trip deal

$518 or less

Good one-way deal

$316 or less
Provider with most accurate pricing for Waterloo-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Waterloo-Chicago (CHI) flights.
Search Deals
From Waterloo to Illinois
Search Deals
One-way flight from Waterloo to Illinois
Search Deals
Price to beat on a round-trip flight from Waterloo to Illinois.
Search Deals
Price to beat on a one-way flight from Waterloo to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Waterloo 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 May 10, 2026.
Use the filters below to find and compare flights from Waterloo to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

WaterlooChicago

ALO - ORD

ALOORD

Waterloo

Mon 6/1

3:02 pm-4:33 pm

Nonstop1h 31m

Chicago O'Hare Intl

Sun 6/7

11:00 pm-12:21 am

Nonstop1h 21m

$204

WaterlooChicago

ALO - ORD

ALOORD

Waterloo

Sun 6/7

2:55 pm-4:29 pm

Nonstop1h 34m

Chicago O'Hare Intl

Sat 6/13

11:00 pm-12:21 am

Nonstop1h 21m

$204

WaterlooChicago

ALO - ORD

ALOORD

Waterloo

Tue 6/23

5:00 am-6:24 am

Nonstop1h 24m

Chicago O'Hare Intl

Tue 6/30

11:00 pm-12:21 am

Nonstop1h 21m

$204

WaterlooChicago

ALO - ORD

ALOORD

Waterloo

Fri 7/17

3:26 pm-5:00 pm

Nonstop1h 34m

Chicago O'Hare Intl

Sun 7/19

11:07 pm-12:29 am

Nonstop1h 22m

$204

WaterlooChicago

ALO - ORD

ALOORD

Waterloo

Fri 5/22

3:02 pm-4:33 pm

Nonstop1h 31m

Chicago O'Hare Intl

Tue 5/26

10:47 pm-12:09 am

Nonstop1h 22m

$204

WaterlooChicago

ALO - ORD

ALOORD

Waterloo

Wed 6/3

3:07 pm-4:38 pm

Nonstop1h 31m

Chicago O'Hare Intl

Wed 6/24

11:00 pm-12:21 am

Nonstop1h 21m

$204

WaterlooChicago

ALO - ORD

ALOORD

Waterloo

Thu 6/4

3:00 pm-4:34 pm

Nonstop1h 34m

Chicago O'Hare Intl

Fri 6/26

11:00 pm-12:21 am

Nonstop1h 21m

$204
Quickest round-trip

WaterlooChicago

ALO - ORD

ALOORD

Waterloo

Fri 8/21

5:00 am-6:22 am

Nonstop1h 22m

Chicago O'Hare Intl

Sun 8/23

1:25 pm-2:46 pm

Nonstop1h 21m

$224

WaterlooChicago

ALO - ORD

ALOORD

Waterloo

Sun 8/2

5:06 am-6:30 am

Nonstop1h 24m

Chicago O'Hare Intl

Tue 8/4

11:07 pm-12:29 am

Nonstop1h 22m

$293

WaterlooSt. Louis

ALO - STL

ALOSTL

Waterloo

Sun 5/24

3:02 pm-7:20 pm

1 stop4h 18m

Lambert-St Louis

Thu 5/28

9:08 am-2:32 pm

1 stop5h 24m

$546

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/5

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Waterloo to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Waterloo 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 Waterloo to Illinois

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

Find hourly flight availability from Waterloo 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 May 10, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Waterloo, Iowa to Illinois as you normally would.

Weekly flight availability from Waterloo, Iowa to Illinois

Explore weekly flight availability from Waterloo 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 May 10, 2026.

The most flights from ALO to USIL are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

Related info for your journey

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

  • What airport do you fly from for flights from Waterloo to Illinois?

    For a flight from Waterloo to Illinois, you will be flying from Waterloo. Waterloo (ALO) is just 5.3 mi from the center of the city.

  • How long is the flight from Waterloo, Iowa to Illinois?

    There are many flights that can get you from Waterloo, Iowa to Illinois in 1h 31m. Fly via American Airlines to get the fastest option. Airlines will cover a distance of 233 mi. All flights are typically nonstop.

  • What are the most reliable airlines from Waterloo, Iowa to Illinois?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Waterloo, Iowa to Illinois on time: American Airlines (71%), Envoy Air (71%), Qatar Airways (51%).

  • What are the cheapest flights from Waterloo, Iowa to Illinois?

    While on average a flight from Waterloo, Iowa to Illinois is generally $458, our data shows the cheapest flight currently is $148. When looking at the most popular route, (Waterloo - Chicago O'Hare Intl), you can expect to pay $204 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Waterloo 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.

See more FAQs

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